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Mitsubishi Electric CITY MULTI PUHY-400YMF-B, Service Handbook

The Mitsubishi Electric CITY MULTI PUHY-400YMF-B is a high-performance air conditioning system that ensures efficient cooling and heating for commercial spaces. For in-depth understanding and maintenance, download the free Service Handbook manual from our website manualshive.com and unlock valuable insights for optimal functioning of this exceptional product.

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–125–

(3)

Refrigerant adjustment in heating season (Flow chart)

PUHY-(P) 400·500 YMF-B

Start

Adjustment

Has the operating 

condition stabilized?

Is the 

accumulator's liquid level 

AL = 0?

Did the liquid level 

change from AL = 0 to 

AL = 1?

Did the liquid level 

change from AL = 1 to 

AL = 0?

Did the liquid level 

change from AL = 2 to 

AL = 1?

Is the 

accumulator's liquid level 

AL = 1?

Is the 

accumulator's liquid level 

AL = 1?

Is the accumulator's 

liquid level AL=0 when just one indoor 

unit is running.

Adjustment is 

not necessary.

Run all the indoor units in the 
heating condition in the test run 
mode.

Turn on switches No. 1, 2, 4, 5 and 6 
of the self-diagnosis switch (SW1), 
switching to the mode in which the 
liquid level is displayed by the LED.

Determine the difference between 
the volume of refrigerant needed for 
heating and the volume needed for 
cooling and charge with that amount.

Charge with small amounts of 
refrigerant at a time through the 
low pressure service port.

Drain out small amounts of 
refrigerant at a time from the low 
pressure service port.

Drain out small amounts of 
refrigerant at a time from the low 
pressure service port.

Draining out approximately 5 kg 
of refrigerant.

Turn all of switches of 
SW1 OFF.

Adjustment 

complated.

Adjustment 

complated.

Readjust.

YES

NO

Finish charging with refrigerant.

Finish draining out refrigerant.

Finish draining out refrigerant.

Note: 1

Note: 2

Note: 5

Note: 6

Note: 7

Note: 3

Note: 3

Note: 4

AL = 1 or 2

AL = 2

If adjustment of the refrigerant volume was done by heating operation, it 
is possible that accumulation of refrigerant due to the lengthened piping 
could have a great influence, so it is recommended that operation be 
checked during the cooling season.

*

Note: Do not let the drained out refrigerant escape to the outside atmo-

sphere.

After adjusting the refrig-
erant volume, run for 5 
minutes and judge the AL.

After adjusting the refrig-
erant volume, run for 5 
minutes and judge the AL.

After adjusting the refrig-
erant volume, run for 5 
minutes and judge the AL.

1

2

3

6

8

0

4

5

7

9

A

F

G

H

I

B

C

D

E

Summary of Contents for CITY MULTI PUHY-400YMF-B

Page 1: ...CONDITIONERS CITY MULTI Series Y Super Y Service Handbook Models PUHY 400YMF B 500YMF B PUHY P400YMF B P500YMF B PUHY 600YSMF B 650YSMF B 700YSMF B 750YSMF B PUHY P600YSMF B P650YSMF B P700YSMF B P750YSMF B ...

Page 2: ... 27 6 Function of Dip SW and Rotary SW 39 3 TEST RUN 45 1 Before Test Run 45 2 Test Run Method 52 4 GROUPING REGISTRATION OF INDOOR UNITS WITH REMOTE CONTROLLER 53 5 CONTROL 59 1 Control of Outdoor Unit 59 2 Operation Flow Chart 109 3 List of Major Component Functions 114 4 Resistance of Temperature Sensor 118 6 REFRIGERANT AMOUNT ADJUSTMENT 119 1 Operating Characteristics and Refrigerant Amount 1...

Page 3: ...chnician to install the accessories Improper installation by the user may result in water leakage electric shock or fire Never repair the unit If the air conditioner must be repaired consult the dealer If the unit is repaired improperly water leakage electric shock or fire may result Do not touch the heat exchanger fins Improper handling may result in injury If refrigerant gas leaks during install...

Page 4: ...n of the refrigerant in the cylinder will change and performance may drop Do not use a refrigerant other than R407C If another refrigerant R22 etc is used the chlorine in the refrigerant may cause the refrigerator oil to de teriorate Use a vacuum pump with a reverse flow check valve The vacuum pump oil may flow back into the refriger ant cycle and cause the refrigerator oil to deteriorate Do not u...

Page 5: ... Both ends of the pipes should be sealed until immediately before brazing Wrap elbows and T s in plastic bags for storage The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil such as Suniso Water infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure Piping materials must be stored with more care than with the conventio...

Page 6: ...ons Use only the necessary minimum quantity of oil Reason 1 The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside Notes Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure Do not use oils other than ester oil ether oil or alkylbenzene ...

Page 7: ...roduct Flare tool Flaring of pipes Current product Bender Bending of pipes Current product Application oil Applied to flared parts Current product Torque wrench Tightening of flare nuts Current product Pipe cutter Cutting of pipes Current product Welder and nitrogen cylinder Welding of pipes Current product Refrigerant charging meter Refrigerant charging Current product Vacuum gauge Checking the v...

Page 8: ...o flux when brazing between copper pipes or between a copper pipe and copper coupling 4 If installed refrigerant pipes are not immediately connected to the equipment then braze and seal both ends of them Reasons 1 The new refrigerant oil is 10 times more hygroscopic than the conventional oil The probability of a machine failure if water infiltrates is higher than with conventional refrigerant oil ...

Page 9: ...e refrigerant circuit when the vacuum pump power is turned off power failure It is also possible to attach a check valve to the actual vacuum pump afterwards 2 Standard degree of vacuum for the vacuum pump Use a pump which reaches 0 5 Torr 500 MICRON or below after 5 minutes of operation In addition be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil If...

Page 10: ... the outside temperature is charged first while the rest of refrigerants remain in the cylinder Note In the case of a cylinder with a syphon liquid R407C is charged without turning the cylinder up side down Check the type of cylinder before charging 8 Dryer 1 Replace the dryer when the refrigerant circuit is opened Ex Change the compressor full gas leakage Be sure to replace the dryer with a CITY ...

Page 11: ...re Sensor Heat Exchanger Accumulator Heat Exchanger of CS circuit PUHY P YMF B only Solenoid Valve SV5b Variable Capacity Compressor No 1 Compressor Four way Valve 21S4b Oil Separator Four way Valve 21S4a Heat Exchanger Sub cool Ciol Oil Equalization Pipe Belt Heater Constant Capacity Compressor No 2 Compressor ...

Page 12: ...NCON board MAIN board INV board Choke coil L2 Magnetic contactor 52C2 Magnetic contactor 52F Transistor module TRM Thermal overload 51C2 Thyristor module SCRM Magnetic contactor 52C1 Capacitor C2 C3 Smoothing capacitor Diode stack DS ...

Page 13: ... 10 Noise filter NF DC reactor DCL Noise filter box Noise Filter Box Rear of the controller box ...

Page 14: ...ed control CN40 M NET transmission power supply CNVCC3 Power source for control 1 2 30 V 1 3 30 V 4 6 12 V 5 6 5 V CN51 Indication distance 3 4 Compressor ON OFF 3 5 Trouble CNRS3 Serial transmission to INV board CN3D Cooling Heating auto changeover CN20 Power supply 3 L1 1 N SW4 SW3 SW2 SWU2 SWU1 SW1 LD1 Service LED ...

Page 15: ...rd CN3 CN2 1 CN2 2 CN2 3 CNVDC CN52C CNFAN CNAC2 CNR CNRS2 SW1 CNCT CN30V CNTH CNL2 CNVCC1 CNVCC2 Power source 1 L2 3 N Power supply 5 V Power supply 1 2 30 V 1 3 30 V 4 6 12 V 5 6 5 V Output to transistor module ...

Page 16: ... 13 FANCON board CNV CNW CNU CNFC2 ...

Page 17: ... 14 RELAY board CN51C2 CNOUT2 CNRT2 CN52F CN52C2 CNCH ...

Page 18: ...nsor Solenoid valve SV3 PUHN P YMF B only Solenoid valve SV2 PUHN P YMF B only Accumlator Controller box Oil balance pipe Belt heater Constant capacity compressor No 3 compressor Liquid ball valve Gas ball valve Service check point right high pressure left low pressure Four way valve Heat exchanger ...

Page 19: ...roller Box CONT board Terminal block TB1 powersource Terminal block TB3 transmission FANCON board Transformer Noise Filter NF Thyristor module SCRM Magnetic contactor 52C Thermal overload relay 51C Fuses F1 F2 ...

Page 20: ... 17 CONT board SWU2 CNTR SWU1 CNFC1 SW3 SW2 CNS1 M NET transmission CN20 Power supply 1 N 3 L1 ...

Page 21: ...BV2 BV1 TH12 Comp2 Comp1 HEX2a HEX1a CV2 SA MA CP3a SV6 SCC LEV1 63H1 63H2 21S4a 21S4b SV5b SV22 SV32 ST5 ST6 CP3b ST3 ST4 ST9 ST8 TH9a ST2 ST1 CJ3 ST7 TH9b TH2 Drier CP2 CS circuit TH10c 63LS CV3 CP5 TH10a TH10b SLEV 2 Refrigerant Circuit Diagram and Thermal Sensor 1 PUHY P400 500YMF B ...

Page 22: ...SV5b HEX1a TH6 HEX2b HEX1b 21S4b 21S4a CJ1 63HS ST5 SV4 SV6 TH11 63H1 CV1 O S CJ2 BV1 ST1 MA SA TH2 CP2 ST2 BV2 BV3 ST8 ST9 TH3 ST3 TH7 ST7 TH9 TH10b TH10a LEV1 SCC TH4 ST4 CJ3 63H2 CV2 CP3a SV22 SV32 TH12 CP3b No 2 Comp CV3 CP5 There are SV22 SV32 only for PUHY 500YMF B ...

Page 23: ...C LEV1 63H1 63H2 21S4a 21S4b SV5b SV22 SV32 ST5 ST6 CP3b ST3 ST4 ST9 ST8 TH9a ST2 ST1 CJ3 ST7 TH9b TH2 Drier CP2 CS circuit TH10c 63LS CV3 CP5 TH10a TH10b Distributer Liquid SCC TH7 TH5 O S TH11 CJ2 SV4 SV1 CP1 CP4 TH4 TH3 BV2 BV1 Comp1 HEX2 HEX1 SV5b SA MA CP3 LEV1 63H 21S4 CJ1 CV1 BV3 ST1 ST2 ST5 ST6 ST9 ST3 ST4 ST8 TH10a CV2 CP5 LEV2 TH6 63LS ST10 ST7 TH9 TH8 TH10b SV3 SV2 SLEV PUHY P400 500YMF...

Page 24: ... SA MA TH3 ST3 TH9 LEV1 ST7 TH7 TH2 CP2 CP5 CV3 CJ2 SCC SCC ST1 BV1 Distributer Gas Indoor unit BV2 ST2 BV3 BV1 ST1 CJ2 63LS MA SA CP3 ST8 ST4 TH4 ST3 TH3 CP4 CP1 SV1 ST6 CV1 O S CJ1 ST5 SV4 21S4 TH11 63H Comp1 TH10a TH6 HEX1 HEX2 TH5 TH8 ST10 TH9 LEV1 ST7 TH7 CV2 BV2 SV5b CP5 LEV2 ST2 TH10b BV3 Oil balance pipe Distributer Liquid ST9 4 PUHY 600 650 700 750YSMF B PUHY 400 500YMF B PUHY 200 250YMF ...

Page 25: ...REMOTE MJ 103MTRA CENTRAL CONTROLLER 9 SCREEN BACK ENTER VENTILATION RESET ON OFF 1 2 3 INS DEL ON OFF STAND BY DEFROST ERROR CODE OA UNIT ADDRESS NO CENTRALLY CONTROLLED CLOCK ON OFF C 1Hr NOT AVAILABLE C CHECK MODE FILTER CHECK TEST RUN ON OFF CLOCK FILTER CHECK TEST RUN REMOTE CONTROLLER NETWORK PAR F25MA TEMP TIMER SET INDOOR UNIT ADDRESS NO S M T W T F S SET S E T B A C K 0 3 6 9 12 12 15 18 ...

Page 26: ... 23 ...

Page 27: ...r factor improvement L2 SV1 22 32 4 5b 6 Choke coil Transmission SYMBOL EXPLANATION Fan Radiator panel TB1 1A 3 7 DCL MF1 Blue Red Orange Brown Red White Yellow Black Purple Black Brown Red Inverter Controller Box BOX BODY INV board Power circuit board L2 Orange Yellow Black R7 Purple MF1 2P CN30V 2P CNL2 6P CN3 5P CNLV2 3P CNTR 5P CNLV1 3P CN32 3P CNL 2P CN2 1 3P CNH 2P CN01 THHS 8P CN02 2P CN2 2...

Page 28: ...her switch settings of LED display 51 4 5 6 3 2 7 9 10 21S4b SV4 SV22 32 10 9 OFF 0 ON 1 During compres sor run at factory shipment FLAG7 FLAG1 Display at LED lighting blinking 52C2 21S4a FLAG6 Display SW1 operation Always lighting Operation of self diagnosis switch SW1 and LED display 8 1 2 3 4 5 6 7 FLAG3 FLAG4 FLAG2 SV11 FLAG5 Relay output display Lighting Check display1 Blinking FLAG8 ON 1 FLA...

Page 29: ...2 3 3 2 1 5 4 3 2 1 6 6 5 4 S X02 SV1 51C CN46 3P CNCH11 3P CH11 52C1 CN52C1 5P X06 X07 52C1 51C1 13 14 A1 A2 Detection circuit Detection circuit ZNR01 A A Fan motor L1 L2 L3 L1 L2 L3 CH3 CH2 X05 X04 SSR01 1 2 3 4 3 2 1 1 2 3 4 5 6 6P CN34 3P CN35 3 CN39 3P 2 1 X03 SV3 SV2 SV4 SV 5b 21 S4 52 C1 NF Noise Filter THERMISTER SV2 SV3 SORENOID VALVE 21S4 MF MC1 52C1 SSR CH11 CH2 CH3 ZNR01 SV5b 63H 63LS ...

Page 30: ...6 12 12 12 1 30 1 60 51 65 50 27 10 11 2 3 16 0 23 26 12 125 125 100 63 32 125 125 125 100 32 10 10 10 10 10 10 10 10 10 10 Hi Hi Hi Hi Hi Hi Hi Hi Hi Hi 410 410 360 360 340 410 410 410 360 280 DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Indoor unit Outdoor unit Items Ambient temp Indoor unit Piping Condition Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total ...

Page 31: ...del Main pipe Branch pipe Total piping length Variable capacity unit Constant capacity unit DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Sectional temperature Pres sure LEV opening Indoor unit fan notch Refrigerant volume Current Voltage Indoor unit SC LEV1 Oil return SLEV SC LEV1 Liquid pipe LEV2 High pressure Low pressure after O S before Main ACC PUHY P600YSMF B PUHY P700YSMF B PUHY P40...

Page 32: ...16 60 21 5 4 6 21 5 4 5 2 11 0 45 2 11 0 44 92 102 97 102 42 6 5 8 7 7 13 13 13 2 1 30 2 1 60 51 65 50 27 11 10 3 2 16 0 23 102 30 3 50 27 12 4 26 12 Variable capacity unit Constant capacity unit Indoor unit Outdoor unit Items Ambient temp Indoor unit Piping Condition Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length Variable capacity unit Constant capac...

Page 33: ...ge TH11 TH12 Heat exchanger outlet TH5 Inlet Accumulator Outlet Suction Comp No 1 No 2 Low pressure saturation temperature TH2 Upper TH4 Liquid level Lower TH3 Shell bottom Comp No 1 No 2 SCC outlet TH7 Bypass outlet TH8 Bypass inlet TH9 LEV inlet Heat exchanger outlet Outdoor unit Sectional temperature Pressure LEV opening Indoor unit fan notch Refrigerant volume Total current Voltage Indoor unit...

Page 34: ...H9 LEV inlet Heat exchanger outlet Variable capacity unit Constant capacity unit DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Sectional temperature Pres sure LEV opening Indoor unit fan notch Refrigerant volume Current Voltage Indoor unit SC LEV1 Oil return SLEV SC LEV1 Liquid pipe LEV2 High pressure Low pressure after O S before Main ACC PUHY 600YSMF B PUHY 700YSMF B PUHY 400YMF B PUHY 50...

Page 35: ...H9 LEV inlet Heat exchanger outlet Variable capacity unit Constant capacity unit DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Sectional temperature Pres sure LEV opening Indoor unit fan notch Refrigerant volume Current Voltage Indoor unit SC LEV1 Oil return SLEV SC LEV1 Liquid pipe LEV2 High pressure Low pressure after O S before Main ACC PUHY 650YSMF B PUHY 750YSMF B PUHY 400YMF B PUHY 50...

Page 36: ... 0 6 0 5 5 5 5 5 5 55 55 22 4 28 7 26 5 25 2 24 3 32 8 31 1 30 0 0 122 21 5 3 6 21 5 3 2 2 11 0 35 2 11 0 31 88 93 88 93 3 1 6 7 6 7 5 2 5 0 10 30 6 43 45 40 33 5 6 6 7 7 0 28 81 34 DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Items Ambient temp Indoor unit Piping Condition Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length Outdoor unit Indoor uni...

Page 37: ...1 5 3 5 21 5 3 5 2 11 0 34 2 11 0 34 88 93 3 1 5 6 5 6 5 2 6 0 9 10 30 5 6 43 45 40 33 5 5 5 6 6 0 28 93 1 30 5 33 1 81 34 Variable capacity unit Constant capacity unit Indoor unit Outdoor unit Items Ambient temp Indoor unit Piping Condition Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length Variable capacity unit Constant capacity unit DB WB Set m kg A V...

Page 38: ...ration Model Main pipe Branch pipe Total piping length Variable capacity unit Constant capacity unit DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Sectional temperature Pres sure LEV opening Indoor unit fan notch Refrigerant volume Current Voltage Indoor unit SC LEV1 Oil return SLEV SC LEV1 Liquid pipe LEV2 High pressure Low pressure after O S before Main ACC PUHY P650YSMF B PUHY P750YSMF B...

Page 39: ...ow pressure saturation temperature TH2 Upper TH4 Liquid level Lower TH3 Shell bottom Comp No 1 No 2 Heat exchanger gas line TH10a TH10b Heat exchanger inlet LEV inlet DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Items Ambient temp Indoor unit Piping Condition Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length Outdoor unit Indoor unit Outdoor unit ...

Page 40: ...as line TH10a Heat exchanger inlet LEV inlet Variable capacity unit Constant capacity unit DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Sectional temperature Pres sure LEV opening Indoor unit fan notch Refrigerant volume Current Voltage Indoor unit SC LEV1 Oil return SLEV SC LEV1 Liquid pipe LEV2 High pressure Low pressure after O S before Main ACC PUHY 600YSMF B PUHY 700YSMF B PUHY 400YMF...

Page 41: ...ger gas line TH10a Heat exchanger inlet LEV inlet Variable capacity unit Constant capacity unit DB WB Set m kg A V Pulse kg cm2 G MPa C Outdoor unit Sectional temperature Pres sure LEV opening Indoor unit fan notch Refrigerant volume Current Voltage Indoor unit SC LEV1 Oil return SLEV SC LEV1 Liquid pipe LEV2 High pressure Low pressure after O S before Main ACC PUHY 650YSMF B PUHY 750YSMF B PUHY 4...

Page 42: ...ol Switch Deletion of connection information Deletion of error history Adjustment of Refriger ant Volume Ignore liquid level errors Forced defrosting Reset of the time the CS circuit is closed SW3 2 Function Valid Invalid Indoor Unit Test Operation Defrosting start tempera ture Defrosting end tempera ture Target low pressure change Pump Down Function Target high pressure change Models SW4 3 Functi...

Page 43: ...y control Ordinary control 8 C 7 C Ordinary control R22 Model Model 200 Before power is turned on During normal operation when power is on During normal operation when power is on During normal operation when power is on Except during defrosting During normal operation when power is on Before power is turned on When switching on the power Unit Address Setting Ignore liquid level errors Forced defr...

Page 44: ...Unit Test Operation Defrosting start tempera ture Defrosting end tempera ture Target low pressure change Target high pressure change Models Change service LED Inverter control Switch Models Switch Function During normal operation when power is on Invalid 2 hours after compressor starts PUHY 600 650 700 750 YSMF B PUHY 400 500YMF B 1 Variable capacity unit MAIN board Function According to Switch Op...

Page 45: ...wer is on During normal operation when power is on During normal operation when power is on Except during defrosting During normal operation when power is on Before power is turned on When switching on the power Ignore liquid level errors Start forced defrosting 2 C 12 C Ignore oil equalization circuit irregularities R407C Model Model 250 Unit Address Setting Ignore liquid level errors Forced defr...

Page 46: ... in remote controller Provided 2500h Effective Thermo ON signal display Always at heat Low speed Set airflow Effective Effective Cool only Provided Provided Provided 2nd setting Horizontal Ineffective Room temp sensor position Clogged filter detect Filter duration OA intake Remote display select Humidifier control Heating thermo OFF airflow Heating thermo OFF airflow Power failure automatic return...

Page 47: ...WC Ceiling height setting For options Setting of air outlet opening Airflow control PLFY P VKM PCFY P VGM PDFY P VM PLFY P VLMD PLFY P VKM PLFY P VKM PCFY P VGM PKFY P VGM PLFY P VLMD PDFY P VM Phase control Relay selection The ceiling height is changed by SWB setting As this switch is used by interlocking with SWC refer to the item of SWC for detail SWA SWB 1 2 3 2 way 3 5 m 3 8 m 3 8 m 3 way 3 0...

Page 48: ...te controller and their capabilities The number of indoor units and the total number of remote controllers is displayed within the parenthesis 1 If even one unit that is higher than 200 exists in the cooling system the maximum capacity will be 200 or higher Please refer to the installation manual for more details Before turning power on to the outdoor unit first turn on the transmission booster If...

Page 49: ...ting portions of each water piping Water is supplied to water supply tank and float switch is operating Work Content of test run Check point Result Disassembling and assembling of drain water lifting up mechanism Mounting of float switch Electric wiring Lead wire from control box not damaged Rubber cap properly inserted to drain water outlet of drain pan Insulation pipe of gas and liquid pipes dea...

Page 50: ... 47 ...

Page 51: ...le 100 m or less total length 220 m at the farthest Connecting piping size of branch piping correct Branch pipe properly selected Refrigerant piping diameter correct Refrigerant leak generated at connection Insulation work for piping properly done Specified amount of refrigerant replenished Pitch and insulation work for drain piping properly done Specified switch capacity and wiring diameter of ma...

Page 52: ...ssion line Address setting properly done Remote controller indoor unit and outdoor unit Setting of address No done when shutting off power source Address numbers not duplicated Turned on SW3 8 on indoor unit circuit board when mounting room thermistor sensor Refrigerant piping ball valve Liquid pressure pipe gas pressure pipe opened Turn on power source 12 hours before starting opera tions Erroneo...

Page 53: ...ss total length 220 m at the farthest Connecting piping size of branch piping correct Branch pipe properly selected Refrigerant piping diameter correct Refrigerant leak generated at connection Insulation work for piping properly done Specified amount of refrigerant replenished Pitch and insulation work for drain piping properly done Specified switch capacity and wiring diameter of main power sourc...

Page 54: ...ne Address setting properly done Remote controller indoor unit and outdoor unit Setting of address No done when shutting off power source Address numbers not duplicated Turned on SW3 8 on indoor unit circuit board when mounting room thermistor sensor Refrigerant piping ball valve Liquid pressure pipe gas pressure pipe oil balance pipe opened Turn on power source 12 hours before starting opera tion...

Page 55: ...T AVAILABLE may be displayed on remote controller However it is not a malfunction Operation procedure 1 2 3 4 5 6 7 8 9 Turn on universal power supply at least 12 hours before getting started Displaying HO on display panel for about two minutes Press TEST RUN button twice Displaying TEST RUN on display panel Press selection button Make sure that air is blowing out Press select button to change fro...

Page 56: ...ed registration This switch is used to retrieve identify the content of group and inter locked connection information registered This switch is used to retrieve identify the content of group and inter locked connection information registered This switch selects the case to register indoor units as group group setting mode or that as interlocked interlocked setting mode The unit address is shown at...

Page 57: ...al identification of group registration information of indoor units The address of the registered indoor units in group is retrieved identified 3 Retrieval identification of registration information The connection information of any unit indoor outdoor units remote controller or the like is retrieved identified 4 Deletion of group registration information of indoor units The registration of the in...

Page 58: ...e controller under stopping HO under displaying Ordinary mode INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C 1 1 Group setting mode Confirm the indoor unit address No Confirm the connection of the transmission line ON OFF STAND BY DEFROST ERROR CODE OA UNIT ADDRESS NO CENTRALLY CONTROLLED C...

Page 59: ...ay of HO continuously press the FILTER switch A B at the same time for 2 seconds to change to the registration mode 2 Operate switch G for the interlocked setting mode See figure below 3 Assign the unit address of which registration information is desired to confirm with the TIMER SET switch H Then press the switch E to display it on the remote controller See figure below Each pressing of switch E...

Page 60: ...ODE FILTER CHECK TEST RUN ON OFF CLOCK FILTER CHECK TEST RUN REMOTE CONTROLLER NETWORK PAR F25MA TEMP TIMER SET INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C ON OFF STAND BY DEFROST ERROR CODE OA UNIT ADDRESS NO CENTRALLY CONTROLLED CLOCK ON OFF C 1Hr NOT AVAILABLE C CHECK MODE FILTER CHECK TEST RUN ON OFF CLOCK FILTER CHECK TEST RUN REMOTE CONTROLLER NETWORK PAR F25MA TEMP TIMER SET INDOOR ...

Page 61: ...or display on the remote controller is usually transmitted from the indoor unit OA UNIT ADDRESS No is used as the address of the indoor unit 4 Press the CLOCK ON OFF switch F twice See the figure below 5 After completing the deletion continuously press the FILTER switch A B at the same time for 2 seconds to return to the original ordinary mode with the remote controller under stopping INDOOR UNIT ...

Page 62: ...ollows It is performed at 2 Hz per second 20 to 100 Hz TH6 20 C and in cooling mode or in heating mode 30 to 100 Hz TH6 20 C and in cooling mode 1 No 2 compressor operation stopping and full load un load switching 1 Switching from stopping to operation of No 2 compressor When the required performance cannot be obtained by only No 1 compressor the No 2 compressor will be started The No 2 compressor...

Page 63: ...mpressor is operated in un load its lowest frequency the bypass valve is turned ON when the low pressure 63 LS is 1 0 kg cm2 G 0 098 MPa or less and turned OFF when it is 2 0 kg cm2 G 0 196 MPa or more Heating After the compressor has been operated for 3 minutes and only the No 1 compressor is operated in un load its lowest frequency the bypass valve is turned ON when the high pressure Pd exceeds ...

Page 64: ... Bypass solenoid valves SV1 SV4 Both SV1 and SV4 are on open ON OFF SV1 ON for 4 minutes ON ON for 3 minutes ON ON during oil recovery operation af ter continuous low frequency com pressor operation ON Ps 1 0 kg cm2 G 0 098 MPa Pd 27 kg cm2 G 2 65 MPa ON when the high pres sure Pd exceeds the control pressure limit OFF SV4 Normally ON 3 Capacity control solenoid valve SV22 SV32 Operation of soleno...

Page 65: ...t of defrosting After there has been heating operation for 50 minutes or after 90 minutes has passed and a piping temperature TH5 of 8 C or less is detected for a preset time defrosting begins When 10 minutes has passed since the compressor began operation or if 10 minutes has passed since recovery from defrosting setting the forced defrosting switch Dip SW2 7 to starts forced defrosting 2 End of ...

Page 66: ...e A and liquid level detecting temperatures TH3 TH4 After deciding refrigerant status Liquid TH3 and TH4 are TH2 9 C or less Gas TH3 and TH4 are TH2 9 C or more judge liquid level by comparing TH3 and TH4 2 Control of liquid level detection 1 Prohibition of liquid level detection Liquid level is detected in normal conditions except for the following Cooling For 6 minutes after starting unit and du...

Page 67: ... it will be conducted after finishing the recovery operation 11 Outdoor unit heat exchanger capacity control 1 Control method In order to stabilize the evaporation temperature during cooling and the high pressure pressure during heating that are required in response to performance needs the capacity of the outdoor heat exchanger is controlled by regulat ing the fan volume of the outdoor unit by ph...

Page 68: ...Hz Operation of the No 2 compressor is prohibited Finished when cumulative operating time reaches 30 minutes Pause Step Both compressors are stopped regardless of the demand from the indoor units 3 minutes Step 2 Only the No 1 compressor is operated Operation of the No 2 compressor is prohibited Operates continuously for 10 minutes and finishes Step 3 Both compressors No 1 and No 2 are operated Fo...

Page 69: ...e will proceed to Step 3 even if the frequency of No 1 compressor is below the specified value 30 minutes Step 1 3 minutes 10 minutes Step 2 5 minutes Step 3 ON OFF of No 1 compressor ON OFF of No 2 compressor End of initial operation mode Note 1 30 minutes Step 1 3 minutes 10 minutes Step 2 3 minutes 10 minutes Step 2 Step 2 5 minutes Step 3 Note 1 ON OFF of No 1 compressor ON OFF of No 2 compres...

Page 70: ...le see the table below restart operation after carrying out the previous trouble reset without entering the emergency operation mode 4 If the same trouble is detected again during the retry operation in 3 above carry out trouble reset once more with the remote control then try emergency operation starting corresponding to the contents of the trouble Table Emergency Operation Mode Patterns and Trou...

Page 71: ...or in heating mode 30 to 100 Hz TH6 20 C and in cooling mode 1 No 2 compressor operation stopping and full load un load switching 1 Switching from stopping to operation of No 2 compressor When the required performance cannot be obtained by only No 1 compressor the No 2 compressor will be started On Model 500 the No 2 compressor will be started in un load operation Model 400 After the No 1 compress...

Page 72: ...o 1 compressor is operated in un load its lowest frequency the bypass valve is turned ON when the evaporation temperature TH2 is 30 C or less and turned OFF when it is 15 C or more Heating After the compressor has been operated for 3 minutes and only the No 1 compressor is operated in un load its lowest frequency the bypass valve is turned ON when the high pressure Pd exceeds 25 kg cm2 2 45 MPa an...

Page 73: ...4 minute 3 minute Start Thermo OFF Thermo ON Defrost Stop 2 Bypass solenoid valves SV1 SV4 Both SV1 and SV4 are on open ON OFF SV1 ON for 4 minutes ON ON for 3 minutes ON ON during oil recovery operation af ter continuous low frequency com pressor operation ON TH2 30 C Pd 23 kg cm2 G 2 26 MPa ON when the high pres sure Pd exceeds the control pressure limit Td 130 C and Pd 20 kg cm2 G 1 96 MPa or T...

Page 74: ...control 1 Start of defrosting After there has been heating operation for 50 minutes or after 90 minutes has passed and a piping temperature TH5 of 0 C or less is detected for a preset time defrosting begins When 10 minutes has passed since the compressor began operation or if 10 minutes has passed since recovery from defrosting setting the forced defrosting switch Dip SW2 7 to starts forced defros...

Page 75: ... A and liquid level detecting temperatures TH3 TH4 After deciding refrigerant status Liquid TH3 and TH4 are TH2 5 C or less Gas TH3 and TH4 are TH2 5 C or more judge liquid level by comparing TH3 and TH4 2 Control of liquid level detection 1 Prohibition of liquid level detection Liquid level is detected in normal conditions except for the following Cooling For 6 minutes after starting unit and dur...

Page 76: ... it will be conducted after finishing the recovery operation 11 Outdoor unit heat exchanger capacity control 1 Control method In order to stabilize the evaporation temperature during cooling and the high pressure pressure during heating that are required in response to performance needs the capacity of the outdoor heat exchanger is controlled by regulat ing the fan volume of the outdoor unit by ph...

Page 77: ...Hz Operation of the No 2 compressor is prohibited Finished when cumulative operating time reaches 30 minutes Pause Step Both compressors are stopped regardless of the demand from the indoor units 3 minutes Step 2 Only the No 1 compressor is operated Operation of the No 2 compressor is prohibited Operates continuously for 10 minutes and finishes Step 3 Both compressors No 1 and No 2 are operated Fo...

Page 78: ...e will proceed to Step 3 even if the frequency of No 1 compressor is below the specified value 30 minutes Step 1 3 minutes 10 minutes Step 2 5 minutes Step 3 ON OFF of No 1 compressor ON OFF of No 2 compressor End of initial operation mode Note 1 30 minutes Step 1 3 minutes 10 minutes Step 2 3 minutes 10 minutes Step 2 Step 2 5 minutes Step 3 Note 1 ON OFF of No 1 compressor ON OFF of No 2 compres...

Page 79: ...ible see the table below restart operation after carrying out the previous trouble reset without entering the emergency operation mode 4 If the same trouble is detected again during the retry operation in 3 above carry out trouble reset once more with the remote control then try emergency operation starting corresponding to the contents of the trouble Table Emergency Operation Mode Patterns and Tr...

Page 80: ... cooling mode or in heating mode 30 to 100 Hz TH6 20 C in cooling mode 1 No 2 compressor operation stopping and full load un load switching 1 Switching from stop to run of No 2 compressor When the required performance cannot be obtained by only No 1 compressor the No 2 compressor will be started The No 2 compressor will be started in un load operation After the No 1 compressor has reached 100 Hz t...

Page 81: ...pressor frequency control 1 Ordinary control The ordinary control is performed after the following times have passed 30 seconds after the start of the compressor or 30 seconds after the completion of defrosting 30 seconds after frequency control operation by the discharge temperature or the high pressure 2 Amount of frequency fluctuation The amount of frequency fluctuation is controlled in respons...

Page 82: ...arts in un load operation in the initial start mode and during defrosting only and starts in full load operation at all other times by SV22 23 switching Normally compressor capacity control is not performed 1 Bypass Valve SV6 SV6 is open when ON variable capacity unit only The valve is set as follows according to whether the variable capacity unit No 1 and No 2 compressors are operating No 1 Compr...

Page 83: ...e quency operation 3 minutes after starting When the discharge temperature Td is risen up Ps 2 0 kg cm2 G 0 196 MPa Pd 24 kg cm2 G 2 35 MPa and after 30 seconds Pd 20 kg cm2 G 1 96 MPa Example of operation of SV1 Compressor Bypass solenoid valve SV1 4 minute 2 minute 4 minute 3 minute Start Thermo OFF Thermo ON Defrost Stop 2 Bypass solenoid valves SV1 SV4 Both SV1 and SV4 are on open Variable cap...

Page 84: ...oid valve SV22 SV32 Operation of solenoid valve SV22 and SV32 stand for SV2 and SV3 of the No 2 No 3 compressor Solenoid valve SV22 SV32 COMP SV22 SV32 Coil Valve Coil Valve OFF Open OFF Closed ON Closed ON Open Status Full load Operating at 100 capacity Un load Capacity control operation ON OFF Low pressure 63LS 1 0 kg cm2 G 0 098 MPa Pd 27 5 kg cm2 G 2 70 MPa When the discharge temperature 110 C...

Page 85: ...en the cumulative operating time of the constant capacity unit compressor 30 minutes 1 Start of defrosting 1 Defrost 1 1 2 After there has been heating operation for 50 minutes and a piping temperature TH5 of 8 C or less is detected for a preset time in either the variable or constant capacity units defrosting starts 2 Defrost 2 After there has been heating operation for 50 minutes and a piping te...

Page 86: ...tecting temperatures TH3 TH4 After deciding refrigerant status Liquid TH3 and TH4 are TH2 9 C or less Gas TH3 and TH4 are TH2 9 C or more judge liquid level by comparing TH3 and TH4 2 Control of liquid level detection 1 Prohibition of liquid level detection Liquid level is detected in normal conditions except for the following Cooling For 6 minutes after starting unit and during unit stopping Heat...

Page 87: ...gher and the accumulator liquid level AL1 are compared to the superheating level SH2 of the constant capacity unit temperature A and TH10a and the accumulator liquid level AL2 to correct the standard opening of the LEV2 in 2 above Chart Corrections to the Standard LEV2 Opening Constant Capacity Unit Superheating Level SH2 7 SH2 7 Accumulator Level AL 0 or 1 AL 2 AL 0 or 1 AL 2 Variable SH1 7 AL 0 ...

Page 88: ... variable capacity unit AL1 2 Constant capacity unit AL2 0 or 1 Variable capacity unit TH6 25 C In heating mode Constant capacity unit switches from operation to stopping Constant capacity unit AL2 0 In heating mode During an accumulator overflow error delay in the constant capacity unit AL2 2 Variable capacity unit AL1 0 or 1 During cooling or heating During an accumulator overflow preliminary er...

Page 89: ... the capacity of the outdoor heat exchanger is controlled by regulating the fan volume of the outdoor unit by phase control and controlling the number of fans and by using the solenoid valves 2 Control When both of the compressors are stopped the fans for the outdoor units are also stopped The fans operate at full speed for 10 seconds after starting The fans for the outdoor unit are stopped during...

Page 90: ...d from the indoor units 3 minutes Step 2 Only the No 1 compressor is operated Operation of the No 2 and No 3 compressor are prohibited to operate Finished when the cumulative operating time reaches 10 minutes Step 3 Step 4 Step 5 Step 6 Compressors No 1 and No 2 are both operated forced Operation of the No 3 compressor is prohibited to operate Finished when cumulative operating time reaches 5 minu...

Page 91: ...the mode will proceed to Step 3 even if the frequency of No 1 compressor is below the specified value 30 minutes Step 1 3 minutes 10 minutes Step 2 5 minutes Step 3 ON OFF of No 1 compressor ON OFF of No 2 compressor End of initial operation mode Note 1 30 minutes Step 1 3 minutes 10 minutes Step 2 3 minutes 10 minutes Step 2 Step 2 5 minutes Step 3 Note 1 ON OFF of No 1 compressor ON OFF of No 2 ...

Page 92: ... of No 1 compressor ON OFF of No 2 compressor ON OFF of No 3 compressor End of initial operation mode Note 4 Example 2 A minute Less than A minute Less than A minute Step 4 Step 6 Step 5 10 minutes 5 minutes ON OFF of No 1 compressor ON OFF of No 2 compressor ON OFF of No 3 compressor End of initial operation mode Note 1 Note 4 Example 3 A minute Less than 5 minutes Less than 5 minutes Step 6 Step...

Page 93: ... unit 1 Cooling mode All indoor units are operated in cooling mode 2 Heating mode All indoor units are operated in heating mode 3 Stop mode All indoor units are in fan or stop mode Note If the outdoor unit has been in the cooling mode and the other indoor units in stop fan thermostat off are set to the heating mode those indoor units will not be operated and the heating indicator will be flashed o...

Page 94: ...rouble Radiator panel 5110 IDC sensor circuit trouble 5301 Overcurrent protection Error codes other than those at right Emergency Mode Pattern When a No 1 Compressor Failure Occurs When No 2 Compressor Failure Occurs Constant capacity unit Error stop Trouble Codes for which Emergency Operation is Impossible Trouble codes other than those at left a High pressure low pressure pressure error 1302 b R...

Page 95: ...mode exceeds 4 hours 2 Cumulative compressor operation time in the heating mode exceeds 2 hours 3 Emergency operation mode trouble detected Control During and After Termination During and after termination the compressor will be stopped and a repeat error code will be flashed on the remote controller If there is a repeat trouble reset during termination retry operations will start by repeating ste...

Page 96: ...s performed at 3 Hz per second 20 to 100 Hz TH6 20 C in cooling mode or in heating mode 30 to 100 Hz TH6 20 C in cooling mode 1 No 2 compressor operation stopping and full load un load switching 1 Switching from stop to run of No 2 compressor When the required performance cannot be obtained by only No 1 compressor the No 2 compressor will be started On Model 500 the No 2 compressor will be started...

Page 97: ... stopped 5 Compressor frequency control 1 Ordinary control The ordinary control is performed after the following times have passed 30 seconds after the start of the compressor or 30 seconds after the completion of defrosting 30 seconds after frequency control operation by the discharge temperature or the high pressure 2 Amount of frequency fluctuation The amount of frequency fluctuation is control...

Page 98: ...Installed SV1 SV4 SV6 SV22 SV32 Variable Capacity Unit Constant Capacity Unit Use 1 Bypass Valve SV6 SV6 is open when ON variable capacity unit only The valve is set as follows according to whether the variable capacity unit No 1 and No 2 compressors are operating No 1 Compressor No 2 Compressor SV6 Stopped Stopped OFF Operating Stopped ON Operating Operating OFF Maintenance of high pressure low p...

Page 99: ...2 G 2 26 MPa and after 30 seconds Pd 20 kg cm2 G 1 96 MPa Td 115 C Example of operation of SV1 Compressor Bypass solenoid valve SV1 4 minute 2 minute 4 minute 3 minute Start Thermo OFF Thermo ON Defrost Stop 2 Bypass solenoid valves SV1 SV4 Both SV1 and SV4 are on open Variable capacity unit SV1 ON OFF ON for 4 minutes ON ON for 3 minutes ON ON during oil recovery operation after con tinuous low f...

Page 100: ...e SV22 SV32 Model 500 only Operation of solenoid valve SV22 and SV32 stand for SV2 and SV3 of the No 2 compressor Solenoid valve SV22 SV32 COMP SV22 SV32 Coil Valve Coil Valve OFF Open OFF Closed ON Closed ON Open Status Full load Operating at 100 capacity Un load Capacity control operation ON OFF Low pressure 63LS 1 0 kg cm2 G 0 098 MPa Pd 26 5 kg cm2 G 2 55 MPa When the discharge temperature 130...

Page 101: ...nit compressor 30 minutes 2 When the cumulative operating time of the constant capacity unit compressor 30 minutes 1 Start of defrosting 1 Defrost 1 1 2 After there has been heating operation for 50 minutes and a piping temperature TH5 of 0 C or less is detected for a preset time in either the variable or constant capacity units defrosting starts 2 Defrost 2 After there has been heating operation ...

Page 102: ...ecting temperatures TH3 TH4 After deciding refrigerant status Liquid TH3 and TH4 are TH2 5 C or less Gas TH3 and TH4 are TH2 5 C or more judge liquid level by comparing TH3 and TH4 2 Control of liquid level detection 1 Prohibition of liquid level detection Liquid level is detected in normal conditions except for the following Cooling For 6 minutes after starting unit and during unit stopping Heati...

Page 103: ...ichever temperature is higher and the accumulator liquid level AL1 are compared to the superheating level SH2 of the constant capacity unit TH9 and TH10a and the accumulator liquid level AL2 to correct the standard opening of the LEV2 in 2 above Chart Corrections to the Standard LEV2 Opening Constant Capacity Unit Superheating Level SH2 3 SH2 3 Accumulator Level AL 0 or 1 AL 2 AL 0 or 1 AL 2 Varia...

Page 104: ...e variable capacity unit AL1 2 Constant capacity unit AL2 0 or 1 Variable capacity unit TH6 25 C In heating mode Constant capacity unit switches from operation to stopping Constant capacity unit AL2 0 In heating mode During an accumulator overflow error delay in the constant capacity unit AL2 2 Variable capacity unit AL1 0 or 1 During cooling or heating During an accumulator overflow preliminary e...

Page 105: ... the capacity of the outdoor heat exchanger is controlled by regulating the fan volume of the outdoor unit by phase control and controlling the number of fans and by using the solenoid valves 2 Control When both of the compressors are stopped the fans for the outdoor units are also stopped The fans operate at full speed for 10 seconds after starting The fans for the outdoor unit are stopped during...

Page 106: ...nd from the indoor units 3 minutes Step 2 Only the No 1 compressor is operated Operation of the No 2 and No 3 compressor are prohibited to operate Finished when the cumulative operating time reaches 10 minutes Step 3 Step 4 Step 5 Step 6 Compressors No 1 and No 2 are both operated forced Operation of the No 3 compressor is prohibited to operate Finished when cumulative operating time reaches 5 min...

Page 107: ...the mode will proceed to Step 3 even if the frequency of No 1 compressor is below the specified value 30 minutes Step 1 3 minutes 10 minutes Step 2 5 minutes Step 3 ON OFF of No 1 compressor ON OFF of No 2 compressor End of initial operation mode Note 1 30 minutes Step 1 3 minutes 10 minutes Step 2 3 minutes 10 minutes Step 2 Step 2 5 minutes Step 3 Note 1 ON OFF of No 1 compressor ON OFF of No 2 ...

Page 108: ... 22 1 C ET or EPT F 22 22 1 5 C ET or EPT F 22 22 20 C Other A minute Definitions A 0 minute 10 minutes 25 minutes 50 minutes 7 hr Example 2 A minute Less than A minute Less than A minute Step 4 Step 6 Step 5 10 minutes 5 minutes ON OFF of No 1 compressor ON OFF of No 2 compressor ON OFF of No 3 compressor End of initial operation mode Note 1 Example 3 A minute Less than 5 minutes Less than 5 minu...

Page 109: ... indoor units are operated in cooling mode 2 Heating mode All indoor units are operated in heating mode 3 Stop mode All indoor units are in fan or stop mode Note If the outdoor unit has been in the cooling mode and the other indoor units in stop fan thermostat off are set to the heating mode those indoor units will not be operated and the heating indicator will be flashed on the remote controller ...

Page 110: ...rouble Radiator panel 5110 IDC sensor circuit trouble 5301 Overcurrent protection Error codes other than those at right Emergency Mode Pattern When a No 1 Compressor Failure Occurs When No 2 Compressor Failure Occurs Constant capacity unit Error stop Trouble Codes for which Emergency Operation is Impossible Trouble codes other than those at left a High pressure low pressure pressure error 1302 b R...

Page 111: ...mode exceeds 4 hours 2 Cumulative compressor operation time in the heating mode exceeds 2 hours 3 Emergency operation mode trouble detected Control During and After Termination During and after termination the compressor will be stopped and a repeat error code will be flashed on the remote controller If there is a repeat trouble reset during termination retry operations will start by repeating ste...

Page 112: ...r unit is being under cooling operation the operation of indoor unit will be prohibited even by setting a part of indoor units under operation or indoor unit under stopping or fan mode to heating mode Reversely when outdoor unit is being heating operation the same condition will be commenced YES NO YES NO YES YES NO NO 2 Normal operations Trouble observed Stop HO blinks on the remote control ler O...

Page 113: ... when the outdoor unit is under heating operation the same condition will be commenced YES NO YES NO YES NO YES NO YES NO YES NO YES NO Normal operations Trouble observed Stop Start Breaker turned on Operation SW turned on 1 Protection function self holding cancelled 2 Indoor unit LEV full closed Remove controller display extinguished 3 minute drain pupm ON FAN stop Drain pump ON Error mode Error ...

Page 114: ...unit fan stop 5 52C2 OFF 6 F 0 after 6 minutes 52C1 OFF Constant capacity unit 1 52C OFF 2 Outdoor unit fan stop 3 LEV1 LEV2 full closed 4 All solenoid valves closed Constant capacity unit operation Constant capacity unit 1 52C OFF 2 Outdoor unit fan stop 3 All solenoid valves closed 4 LEV1 LEV2 full closed Constant capacity unit 1 52C ON 2 Outdoor unit fan control 3 Solenoid valve control 4 LEV1 ...

Page 115: ... control 2 LEV1 SLEV control 3 Solenoid valve control 4 Outdoor unit fan control 5 52C1 52C2 control Constant capacity unit 1 52C ON 2 Outdoor unit fan control 3 Solenoid valve control 4 LEV1 LEV2 control 1 Indoor unit fan stop 2 Indoor unit LEV full closed Variable capacity unit 4 way valve OFF Constant capacity unit 4 way valve ON Variable capacity unit 1 Inverter frequency at defrost control 2 ...

Page 116: ...s a little longer than normal operations YES NO YES NO Normal operations Thermostat ON Stop Dry operations 4 way valve OFF Test run start Note 2 Thermostat ON Inlet temp 18 C Note 1 Variable capacity unit 1 Inverter output 0 Hz 2 Indoor unit LEV SLEV LEV1 full closed 3 Solenoid valve OFF 4 Outdoor unit fan stop 5 52C2 OFF 6 F 0 after 6 minutes 52C1 OFF Constant capacity unit 1 52C OFF 2 Outdoor un...

Page 117: ...pres sor High pressure sensor Low pressure sensor Pressure switch Thermistor Outdoor unit Variable capacity unit Inspection method DC 12 V Amount of opening of the stepping motor drive valve 60 to 2000 pulse Gear Type R0 15 kΩ B0 80 3460 Rt 15exp 3460 0 C 15 kΩ 10 C 9 7 kΩ 20 C 6 4 kΩ 25 C 5 3 kΩ 30 C 4 3 kΩ 40 C 3 1 kΩ Low pressure shell scroll type Winding resitance 0 481 20 C Low pressure shell...

Page 118: ... C 34 kΩ 30 C 160 kΩ 80 C 24 kΩ 40 C 104 kΩ 90 C 17 5 kΩ 50 C 70 kΩ 100 C 13 0 kΩ 60 C 48 kΩ 110 C 9 8 kΩ R50 17 kΩ B25 120 4170 Rt 17exp 4170 0 C 181 kΩ 10 C 105 kΩ 20 C 64 kΩ 25 C 50 kΩ 30 C 40 kΩ 40 C 26 kΩ AC 220 to 240 V Open conducting Close not conducting AC 220 to 240 V Close conducting Open not conducting AC 220 to 240 V Open conducting Close not conducting Resistance check Resistance che...

Page 119: ...etects accumulator refrigerant levels by comparing the temperature differences between TH9 TH3 and TH4 1 Frequency control 2 Defrost control during heating operations and liquid level detec tion 3 Detects sub cool of heat exchanger outlet using HPS data and TH5 to control LEV1 CH11 CH12 crankcase heater CH2 CH3 Accumulator liquid level detection 21S4a 21S4b MC 63LS 63H TH11 Discharge TH3 TH4 Liqui...

Page 120: ...ion and unload operation PUHN P200 250 YMF B only Raise the internal pressure of the constant capacity accumulator Stop refrigerant inflow when the constant capacity unit is stopped Adjusts the bypass flow rate from the liquid piping of the outdoor unit during cooling Adjusts refrigerant flow rate in the constant capacity unit Refrigerant heating inside compressor Refrigerant heating of accumulato...

Page 121: ...exp 3460 Rt 7 465exp 4057 Thermistor R0 33 kΩ 1 TH2 Thermistor R50 17 kΩ 2 THHS Rt 33exp 3965 Rt 17exp 4170 50 40 30 20 10 0 20 10 10 20 30 40 50 0 25 20 15 10 5 0 90 100 110 120 Resistance KΩ Resistance KΩ Temperature C Temperature C 1 273 t 1 273 0 1 273 t Temperature C Temperature C Resistance KΩ Resistance KΩ 1 273 t 1 273 120 1 273 t 1 273 0 1 273 50 ...

Page 122: ...uid level of accumulator is the highest when all the indoor units are operating Discharge temperature hardly changes when increasing or decreasing refrigerant amount with accumulator filled with refrigerant Compressor shell temperature is 20 70 degrees higher than low pressure saturation temperature TH2 when refrigerant amount is appropriate Judged as over replenishment when temperature difference...

Page 123: ...ergency stop due to refriger ant overcharge 1500 Judgment Refrigerant volume tends toward insufficient Refrigerant volume tends toward overcharge Check Items Judgment 1 2 3 4 5 6 7 8 9 10 ON Condition 1 Discharge temperature is high 125 C or higher 2 Low pressure saturation temperature is extremely low 3 Inlet superheating is high if normal SH 20 deg or lower 4 Shell bottom temperature is high the...

Page 124: ...5 88 1 m ø19 05 30 m ø15 88 10 m ø12 7 20 m ø12 7 10 m ø12 7 10 m ø9 52 10 m ø9 52 10 m ø6 35 10 m ø9 52 20 m ø9 52 10 m ø9 52 10 m ø9 52 10 m Each distribution pipe carries liquid ø19 05 30 m 30 m ø15 88 1 m 10 m 11 m ø12 7 3 m 10 m 20 m 10 m 43 m ø9 52 10 m 10 m 20 m 10 m 10 m 10 m 70 m ø6 35 10 m 10 m From the formula above we find that Add Refrigerant volume 0 29 30 0 25 11 0 12 43 0 06 70 0 0...

Page 125: ...is not deg Note 2 A refrigerant volume adjustment performed in the cooling mode must be done with a gauge reading of 14 kg cm2 G 1 37 MPa or higher If the pressure does not reach 14 kg cm2 G 1 37 MPa adjust in the heating mode Note 3 In cooling mode use TH11 TH12 TH5 TH7 and Tc Saturation temperature of pressure sensor data of 63HS to adjust the refrigerant volume TH11 TH12 TH5 and TH7 can be disp...

Page 126: ...ting the refrigerant operate for 5 minutes and determine Note 1 Tc TH5 5 C Adjustment finished Use the low pressure service port to charge the refrigerant a little at a time After adjusting the refrigerant operate for 5 minutes and determine Use the low pressure service port to drain out refrigerant a little at a time Use the low pressure service port to charge the refrigerant a little at a time U...

Page 127: ... time YES NO After adjusting refrigerant operate for 5 minutes and determine Tc TH5 Has the frequency stabilized two hours or more after the power has been turned on or after 30 minutes of continuous compressor operation after the power has been turned on Is Td 110 C Is 5 Tc TH5 10 C Tc TH7 20 C AL1 Variable capacity unit liquid level AL AL2 Constant capacity unit liquid level AL Note 1 Convert Tc...

Page 128: ...rough the low pressure service port Drain out small amounts of refrigerant at a time from the low pressure service port Drain out small amounts of refrigerant at a time from the low pressure service port Draining out approximately 5 kg of refrigerant Turn all of switches of SW1 OFF Adjustment complated Adjustment complated Readjust YES NO Finish charging with refrigerant Finish draining out refrig...

Page 129: ...fference between the volume of refrigerant needed for heating and the volume needed for cooling and charge with that amount Turn on self diagnosis switches SW1 No 7 switching to the mode in which the liquid level is displayed by the LED Readjust Turn all SW1 switches OFF Does AL1 2 or AL2 2 Drain out approximately 5kg of refrigerant from the AL 2 unit s low pressure service port Does AL1 2 or AL2 ...

Page 130: ...length calculated for a liquid pipe with a ø19 05 size Note 6 When turning on SW 1 to 1 2 3 4 5 6 7 8 9 10 ON the LED will display the liquid level AL SW4 2 OFF Variable Capacity Unit AL Display SW4 2 ON Constant Capacity Unit AL Display Note 7 Middle capacity operation refers to the smallest indoor unit operation capacity attainable with the constant capacity Unit Unlike the outdoor unit models o...

Page 131: ... 3 42 6 42 8 43 1 43 3 16 43 6 43 8 44 0 44 3 44 5 44 8 45 0 45 2 45 5 45 7 17 45 9 46 2 46 4 46 7 46 9 47 1 47 3 47 6 47 8 48 0 18 48 3 48 5 48 7 48 9 49 2 49 4 49 6 49 8 50 1 50 3 19 50 5 50 7 50 9 51 2 51 4 51 6 51 8 52 0 52 3 52 4 20 52 6 52 9 53 1 53 3 53 5 53 7 53 9 54 1 54 3 54 5 21 54 7 54 9 55 1 55 3 55 5 55 7 55 9 56 1 56 3 56 5 22 56 7 56 9 57 1 57 3 57 5 57 7 57 9 58 1 58 3 58 5 23 58 ...

Page 132: ... cm2 G 0 098 MPa the affected pressure sensor is faulty deteriorating performance c If the pressure reading in the LD1 display does not change the affected pressure sensor is faulty 3 Disconnect the pressure sensor from the MAIN board and check the pressure according to the LD1 display a If the pressure is 0 1 kg cm2 G 0 098 MPa on the LD1 display the affected pressure sensor is faulty b If the pr...

Page 133: ...ce it will then switch to full load within 5 minutes the operation can be confirmed by the LED display and the operating temperature of the solenoid valve If the indoor unit operating is small the No 2 compressor will not start 2 It is possible to determine whether or not the compressors are switching from unload to full load by check the changes in amperage of the compressor at the moment of swit...

Page 134: ...e whether or not there is normal operation by monitoring the LED display and the sound of the switching the switching of the 21S4a during heating is heavier which could make confirmation by sound more difficult At this time it is possible to determine the areas where there is conductivity by the temperature of the inlet and outlet temperatures of the 4 way switching valve Do not confirm the temper...

Page 135: ...it Since the fan for the outdoor unit is controlled by phase control check the fan speed by monitoring the output status of the phase control output on the LED display At full speed the fan revolves at approx 600 r min The fan will take 5 seconds to reach full speed when starting from a stop Because the variable capacity unit has two fans it may take 10 seconds for them to reach full speed On the ...

Page 136: ...d is being emitted or not can be de termined by holding a screwdriver etc against it then placing your ear against the handle If there is liquid refrigerant inside the LEV the sound may become lower Output Phase Output State No 1 2 3 4 5 6 7 8 ø1 ON OFF OFF OFF OFF OFF ON ON ø2 ON ON ON OFF OFF OFF OFF OFF ø3 OFF OFF ON ON ON OFF OFF OFF ø4 OFF OFF OFF OFF ON ON ON OFF Output pulses change in the ...

Page 137: ... 1 When the LEV opening does not change all output phases are OFF 2 When the output opens a phase and stays ON the motor will not run smoothly and will clack and vibrate 3 When the power source is turned on a close valve signal 2200 pulse is sent to confirm the valve position ensuring a starting point of A 4 When the valve is operating smoothly there will be no sound or vibrations from the LEV whe...

Page 138: ...her indoor units in the cooling mode then check the piping temperatures liquid pipe temperatures of the indoor unit by the operation monitor through the outdoor unit controller board When the fan is running the linear expansion valve is fully closed so if there is leakage the temperature sensed by the thermistor liquid pipe temperature sensor will become low If the temperature is considerably low ...

Page 139: ...so be sure to fasten the body in such a way that it will not move Installing the Coils Fasten the body tightly at the bottom Part A in the figure so that the body will not move then insert the coils from the top inserting the coils stopper securely in one of the indentations on the body There are four indentations for the stopper on the body around its circumference and it doesn t matter which ind...

Page 140: ...ernal voltage is normally 1 5 V the tester to be used for troubleshooting of transistor module should satisfy the following conditions The measured values for troubleshooting are shown in the table below Use the minimum range for tester resistance range Diode stack Perform continuity check with tester Judged as normal if the following characteristics are observed Use the minimum range for tester r...

Page 141: ...dgment Values 1 Check between G and K Use the smallest resistance range on the tester Judgment Value 1 5 Ω 80 Ω Judgment Values 2 Check between AK1 and AK2 Use the greatest resistance range on the tester Judgment Value 60 kΩ Ω External View Internal Circuit Diagrams K AK1 AK2 G G K K AK1 AK2 G G K K AK1 AK2 G G K AK1 AK1 AK1 AK2 AK2 AK2 K G K G K G G K G K G K ...

Page 142: ... CND CNT CN3T on indoor controller board 3 Blown fuse on indoor controller board 4 Faulty or disconnected transformer of indoor unit 5 Faulty indoor controller board 3 Faulty outdoor control circuit board or being out of control As normal transmission is failed between indoor and outdoor units outdoor unit model can not be recognized Checking method countermeasure Lighting Check indoor LED3 Lighti...

Page 143: ...tdoor unit 15 At system connected with MELANS power supply connector CN40 is inserted to centralized control transmission line of outdoor unit 16 The transmission booster is defective or the power supply has been cut off HO display on re mote controller does not disappear and switch is ineffective Checking method countermeasure Check outdoor unit address Same symptom for all units in a single refr...

Page 144: ...without using MELANS 8 More than 2 sets of power supply connector are inserted into the centralized control transmission line of outdoor unit 9 In the system connected with MELANS power sup ply connector CN40 is inserted into the central ized control transmission line of outdoor unit 10 Short circuit of centralized control transmission line a Confirm the address of unit to be coupled b Check the c...

Page 145: ... board Check the voltage between L2 and N on power supply terminal block TB1 DC 24 30 V Except the above mentioned Connector disconnected Except the above mentioned DC 24 30 V Except the above mentioned DC 24 30 V Except the above mentioned 0 5 2 5 Ω Except the above mentioned 19 25 Ω Except the above mentioned 0 Ω Except the above mentioned AC 198 264 V Except the above mentioned AC 198 264 V Exc...

Page 146: ...mission signal should be as follows 1 However minute noise from the DC DC converter or inverter operation may be picked up Cause Erroneous operation Error code Noise entered into Signal changes and is misjudged as the signal of other 6600 transmission line address Transmission wave shape changes to other signal due 6602 to noise Transmission wave shape changes due to noise and can 6607 not be rece...

Page 147: ...door unit Without earthing transmission signal may be changed as the noise on the transmission line has no way to escape For the shield earth of the transmission line for centralized control the effect of noise can be minimized if it is from one of the outdoor units in case of the group operation with different refrigerant sys tems and from the upper rank controller in case the upper rank controll...

Page 148: ... a rectified voltage meter with a symbol be used Correct measurement values cannot be obtained with an ordinary portable tester either analog or digital No Check Item Symptoms Treatment 1 2 3 How many hours was the power kept on before operation When it is restarted does the trouble reappear Run the outdoor unit with the wiring to the compressor disconnected At this time change SW1 1 on the INV bo...

Page 149: ...Individual Parts Failure Judgment Methods If none of the items in 1 to 6 is applicable and the trouble reappears even after the power is switched on again replace the circuit board using the following procedure When replacing the circuit board be sure to connect the connectors and ground wire etc securely 1 Replace the FANCON board only If it recovers the FANCON board is defective 2 Replace the FA...

Page 150: ...oper Correct any defects Check each part inside power circuit resistance megohm or the like a Diode stack Refer to Troubleshooting of diode stack b Power transistor Refer to Troubleshooting of power transistor c Rush current protection resistor d Electromagnetic contactor e DC reactor f SCRM Refer to Individual Parts Failure Judgement Methods For the constant capacity unit check d f only a As ther...

Page 151: ...stor diode modules Coat the grease for radiation on the full surface in a thin layer and fix the module securely with the screw for fastening As the radiation grease attached on the wiring terminal causes poor contact wipe it off if attached Part Name Judgment Method Diode Stack DS Refer to Judging Diode Stack Failure Transistor Module TRM Refer to Judging Transistor Module Failure Thyristor Modul...

Page 152: ... 149 Model PUHY 400YMF B 500YMF B ...

Page 153: ...out the refrigerant from the high pressure and low pressure check joints 4 Oil will be spilt from the oil exhaust pipe when it is removed Be careful please not to spill a large amount of oil Since oil absorbs moisture easily do not leave the refrigerant circuit in the open state for long periods of time Oil which has been drained out cannot be reused 5 When the oil has stopped draining from the re...

Page 154: ...y it could cause the pipe to crack during opera tion so install them securely 20 Mount the discharge temperature thermistor and attach the insulating cover 21 Connect the power cable to the compressor s terminals Caution Be careful not to mistake the three phases If the wires are connected wrong it could damage the compressor 22 When applying the vacuum is completed charge the unit with the amount...

Page 155: ...Fitting 1 Flare Nut No 1 Compressor No2 Compressor Oil Drain Outlet Insulation Discharge Temperature Sensor Discharge Pipe Connection Suction Pipe Connection Terminal Cover No 1 Compressor Parts around the oil equalization pipe Dryer PUHY P YMF B only Flare Nut Oil Drain Outlet Compressor shell temperature sensor TH10c PUHY P YMF B only ...

Page 156: ...l Cover Belt Heater Mounting fittings 2 Discharge Pipe Joint Suction Pipe Joints d All but model PUHY 400 YMF B Process Pipe Around the No 2 Compressor PUHY 400YMF B Pipe joints for Volume Control a Outlet Pipe Joint Suction Pipe Joint b Belt Heater Mounting nuts Mounting fittings 2 c Type 400 only e ...

Page 157: ...g and process piping 11 Shut the ball valves liquid gas and oil balance pipe on the outdoor unit and apply nitrogen from the high and low pressure service check joint up to a pressure of A checking to make sure there is no leakage 12 Discharge the nitrogen gas 13 Open the ball valves liquid gas and oil balance pipe on the outdoor unit and apply a vacuum 14 Install the crankcase heater 15 Mount the...

Page 158: ... 155 Process pipe Pipe joints for Volume Control PUHN P YMF B only Terminal cover Insulation Discharge thermistor Discharge pipe joint Mounting fitting Belt heater Suction pipe joint ...

Page 159: ...bnormality 4210 Breaking of overcurrent 4220 Bus voltage abnormality 4230 Radiator panel overheat protection 4240 Overcurrent protection 4260 Cooling fan abnormality Air inlet TH21 IC 5101 Discharge TH1 OC Liquid pipe TH22 IC 5102 Low pressure saturation TH2 OC 5103 Gas pipe TH23 IC Accumulater liquid level TH3 5104 Accumulater liquid level TH4 5105 Thermal sensor Liquid pipe TH5 5106 abnormality ...

Page 160: ...S sensor circuit abnormality 1216 Preliminary sub cool coil outlet thermal sensor abnormality TH7 1217 Preliminary sub cool coil bypass outlet thermal sensor abnormality TH8 1218 Preliminary sub cool coil bypass inlet thermal sensor abnormality TH9a 1219 Preliminaly CS circuit inlet thermal sensor abnormality TH9b 1221 Preliminary ambient temperature thermal sensor abnormality TH6 1259 Preliminary...

Page 161: ...rocedure when replacing the circuit board be sure to connect all the connectors ground wires etc securely 1 If serial transmission is restored after the INV board only is re placed then the INV board is de fective 2 If serial transmission is not re stored reinstall the INV board and replace the MAIN board If serial transmission is restored the MAIN board is defective 3 If serial transmission is no...

Page 162: ...ooling indoor unit LEV LEV1 Heating indoor unit LEV SV5b whether or not it is closed 21S4b whether or not it is closed Refer to Trouble check of LEV and solenoid valve Check if ball valve is fully open Inspect indoor unit and repair neces sary areas Inspect indoor unit and repair neces sary areas Inspect outdoor unit fan Refer to Trouble check of outdoor unit fan Refer to Trouble check of solenoid...

Page 163: ...as Inspect outdoor fan Refer to Trouble check of outdoor unit fan Refer to Trouble check of Solenoid valve Check resistance of thermistor Refer to section on determining if pres sure sensor has failed Check whether or not sensor pick up heat and pressure using the LED monitor Check whether or not sensor pick up heat and pressure using the LED monitor Check whether or not sensor pick up heat and pr...

Page 164: ...ng code Meaning detecting method Cause Checking method Countermeasure 1500 1501 Overcharged refrigerant abnomality Outdoor unit Refer to Refrigerant amount check Check resistance of thermistor Check temperature and pressure of sensor with LED monitor Check thermistor mounting Refer to solenoid valve troubleshoot ing Refer to LEV troubleshooting 5 If the error pick up prohibit switch SW2 4 is set t...

Page 165: ...ling operation Normally there is several degrees difference between TH2 and TH9 R22 only Steps If the ball valve is open check if the extension piping has become plugged Also check if there is miss matching of piping or wiring After these have been checked reset the power supply to re set the error error Next operate the unit in the opposite mode it was in when the error occurred for 10 to 15 minu...

Page 166: ...r supply terminal blocks TB1 or TB1A reconnect the wiring Check before the breaker after the breaker or at the power supply termi nal blocks TB1 or TB1A and if there is an open phase correct the connec tions a Check if a wire is disconnected b Check the voltage between each of the wires Check 1 the connections 2 the con tact at the connector 3 the tightening torque at screw tightening locations an...

Page 167: ...rts there will be 1 minute during which the unit is in pre liminary error stop mode The preliminary error stop display will blink on the LED The frequency cannot be deter mined when the power is switched on The power supply s frequency cannot be detected The outdoor fan cannot be controlled by phase control Measure the voltage in each part of the constant capacity unit 1 Power source terminal bloc...

Page 168: ...ue at screw tightened portions 4 wiring polarities 5 for broken wires and 6 for grounding in the following wiring TB1A DS 52C R1 R5 C2 C3 TRM Wiring TRM CNVDC Wiring Check if the wiring polarities are as shown on the electric wiring dia gram plate To judge failure of R1 and R5 go to Individual Parts Failure Judgment Methods To judge failure of the 52C go to Indi vidual Parts Failure Judgment Meth ...

Page 169: ...alue Check 1 the connections 2 contact at the connectors 3 tightening torque at screw tightened portions 4 wiring polarities 5 for broken wires and 6 for grounding in the following wiring TB1A DS 52C R1 R5 C2 C3 TRM Wiring TRM CNVDC Wiring Check if the wiring polarities are as shown on the wiring diagram plate To judge failure of R1 and R5 go to Individual Parts Failure Judgment Methods To judge f...

Page 170: ...ver than 43 C it is outside the specifica tions Is the indoor unit capacity total appropriate Are the outdoor indoor unit capac ity settings appropriate To judge failure of the THHS go to the item for error code 5110 To judge failure of the solenoid valve go to Individual Parts Failure Judg ment Methods for the Solenoid Valve Check 1 connections 2 contact at the connectors and 3 for broken wires i...

Page 171: ...r broken wires Check pick up temperature using the LED monitor If there is a big difference between that temperature and the ac tual temperature replace the main cir cuit board Confirm that the thermistor is mounted in the correct place 1 Same as 4230 1 Defective thermistor 2 Tangled lead wires 3 Broken covering 4 Pin has come out of connector creating connection deerror 5 Broken wire 6 Defective ...

Page 172: ...arity With SW1 1 OFF is the inverter s output wiring open With SW1 1 OFF is a compressor which is not specified for this model connected to the inverter s output If none of the items in 1 to 3 is appli cable and if the trouble reappears even after the power is switched on again replace the INV board and the DCCT when replacing the circuit board be sure to connect all the con nectors ground wires e...

Page 173: ... same address is found turn off the power source of outdoor unit and indoor unit for 5 minutes or more after modifying the address and then turn on it again b When no trouble is generated even continuing operation over 5 minutes The transmission wave shape noise on the transmission line should be investigated in accordance with Investigation method of transmission wave shape noise 1 At the collisi...

Page 174: ...oise No noise indicates faulty controller of generat ing unit Noise if existed check the noise CN40 inserted Transmission line installed while turning power source on Check power source of indoor unit 220 V 240 V Check transmission line work and shield finish Ground fault or shield contacted with transmission line System composition Single refrigerant system Investigation of trans mission line noi...

Page 175: ...mote controller indicates the controller which has detected error 1 Data is not properly transmitted due to casual errouneous operation of the generating controller 2 Faulty generating controller Turn off power sources of indoor unit and outdoor unit When power sources are turned off sepa rately microcomputer is not reset and nor mal operations can not be restored Controller trouble is the source ...

Page 176: ... control circuit board of OC 1 When IC unit address is changed or modified during operation 2 Faulty or slipping off of transmission wiring of IC 3 Slipping off of IC unit connector CN2M 4 Faulty IC unit controller 5 Faulty remote controller 6 The transmission booster is defective has dis connected wires or the power has been cut off 1 Faulty transmission wiring at IC unit side 2 Faulty transmissi...

Page 177: ... set number error 7102 Address setting error 7105 6 The transmission booster is defective has dis connected wires or the power has been cut off 1 Cause of 1 3 of Cause for single refri gerant system 2 Slipping off or short circuit of transmission line of OC terminal block for centralized con trol TB7 3 Shut down of OC unit power source of one refrigerant system 4 Neglecting insertion of OC unit po...

Page 178: ... unit transmission line for centralized control 3 The transmission booster is defective has disconnected wires or the power has been cut off 4 Faulty system controller MELANS Same cause as that for plural refrigerant system Trouble of partial IC units 1 Same cause of that for single refrigerant system Trouble of all IC in one refrigerant system 1 Error detected by OC unit Total capacity error 7100...

Page 179: ...e refrigerant system 2 Inserting supply power connector CN40 to OC transmission line for centralized control 3 The transmission booster is defective has disconnected wires or the power has been cut off 4 Faulty MELANS 1 IC unit is keeping the memory of the original group setting with RC although the RC ad dress was changed later The same symptom will appear for the re gistration with SC 2 IC unit ...

Page 180: ... si multaneously and make them again Returning to normal state means the trouble detection due to transmission line work while powering b Check 3 and 4 of the causes left c Investigate the transmission wave shape noise on transmission line according to Investigation method of transmission wave shape noise Much possibility if 6602 is generated Checking code 7100 7101 7102 Meaning detecting method C...

Page 181: ...ncluded in the system Address setting error Erroneous setting of Outdoor unit address Error source Outdoor unit The indoor unit will not operate because it is not correctly con nected to the outdoor unit of the same refrigerant system Remote control sensor error Error not providing the tempera ture designed to remote control ler sensor Error source Indoor unit Different Refrigerant unit connected ...

Page 182: ...cal and graphic display OC Outdoor unit SV Solenoid valve THHS Inverter radiator panel IC Indoor unit LEV Electronic expansion valve COMP Compressor SW1 Variable capacity unit Main board E Memory storage for service activities sampling per minute 7 seg LED The numerical display includes that of pressure temperature or the like while the graphic display includes that of operating condition solenoid...

Page 183: ...ischarge Tempera ture Error Configration Detection Error TH3 Error TH10c Error SV1 CH2 3 Liquid correc tion 4 Auto change over mode Heating Prelimi nary Error Unit No 5 Unit No 13 Unit No 5 Unit No 13 Unit No 5 Unit No 13 Balance Oil No 2 Discharge Tempera ture Error Oil Tempera ture Error TH4 Error Pressure Sensor Error 52F Liquid correc tion 5 Error Unit No 6 Unit No 14 Unit No 6 Unit No 14 Unit...

Page 184: ...TH11 Error TH8 Error INV Error TH12 Error TH9a Error Low Pressure Error Refrigerant Over charge TH2 Error TH9b Error No 1 Discharge Tempera ture Error Configration Detection Error TH3 Error TH10c Error No 2 Discharge Tempera ture Error Oil Tempera ture Error TH4 Error Pressure Sensor Error No 2 Over current Protection TH10b Error TH6 Error Heat Sink Thermo stat Operation TH7 Error No 1 Over curren...

Page 185: ...100101000 0010101000 1010101000 TH6 Data TH7 Data TH8 Data TH9a Data TH9b Data TH10c Data High Pressure Sensor Data Low Pressure Sensor Data THHS Data αOC αOC Accumulator Level TH10a TH10b Qj Target Tc Target ET Tc Te Temporary Frequency COMP1 Output Frequency AK SLEV LEV1 FANCON Output Value Toff COMP1 Operating Current Fan used OC Address IC1 Address Capacity Code IC2 Address Capacity Code IC3 A...

Page 186: ...o101 125 the data on error stops or the data immediately before the error postponement stop which is stored in service memory are displayed No SW1 Item Display Remarks 12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 0110101000 1110101000 0001101000 1001101000 0101101000 1101101000 0011101000 10111...

Page 187: ...mperature IC3 Room Temperature IC4 Room Temperature IC5 Room Temperature IC6 Room Temperature IC7 Room Temperature IC8 Room Temperature IC9 Room Temperature IC10 Room Temperature IC11 Room Temperature IC12 Room Temperature IC13 Room Temperature IC14 Room Temperature No SW1 Item Display Remarks 12345678910 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 1...

Page 188: ...ture IC1 Liquid Pipe Temperature IC2 Liquid Pipe Temperature IC3 Liquid Pipe Temperature IC4 Liquid Pipe Temperature IC5 Liquid Pipe Temperature IC6 Liquid Pipe Temperature IC7 Liquid Pipe Temperature IC8 Liquid Pipe Temperature IC9 Liquid Pipe Temperature IC10 Liquid Pipe Temperature IC11 Liquid Pipe Temperature IC12 Liquid Pipe Temperature IC13 Liquid Pipe Temperature IC14 Liquid Pipe Temperatur...

Page 189: ...1110100 0011110100 1011110100 0111110100 1111110100 0000001100 1000001100 0100001100 1100001100 0010001100 1010001100 0110001100 1110001100 0001001100 1001001100 0101001100 1101001100 0011001100 1011001100 0111001100 1111001100 IC13GasPipeTemperature IC14GasPipeTemperature IC15GasPipeTemperature IC16GasPipeTemperature IC1 SH IC2 SH IC3 SH IC4 SH IC5 SH IC6 SH IC7 SH IC8 SH IC9 SH IC10 SH IC11 SH I...

Page 190: ...1001011100 0101011100 IC1 LEV Opening Pulse IC2 LEV Opening Pulse IC3 LEV Opening Pulse IC4 LEV Opening Pulse IC5 LEV Opening Pulse IC6 LEV Opening Pulse IC7 LEV Opening Pulse IC8 LEV Opening Pulse IC9 LEV Opening Pulse IC10 LEV Opening Pulse IC11 LEV Opening Pulse IC12 LEV Opening Pulse IC13 LEV Opening Pulse IC14 LEV Opening Pulse IC15 LEV Opening Pulse IC16 LEV Opening Pulse IC1 Operation Mode ...

Page 191: ... IC8 Filter IC9 Filter IC10 Filter IC11 Filter IC12 Filter IC13 Filter IC14 Filter IC15 Filter IC16 Filter Indoor Unit Check Indoor Unit Operation Mode Indoor Unit Thermostat 0000 9999 Unit No 17 Unit No 25 Lights up if an abnormal stop has occurred in the IC Lights up during cooling Blinks during heating Goes off during stop and blower operation Lights up when thermostat is ON Goes off when therm...

Page 192: ... 1011100010 0111100010 1111100010 0000010010 1000010010 0100010010 1100010010 0010010010 1010010010 0110010010 1110010010 0001010010 1001010010 0101010010 1101010010 0011010010 1011010010 0111010010 1111010010 0000110010 1000110010 0100110010 1100110010 0010110010 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303...

Page 193: ... 0111001010 1111001010 0000101010 1000101010 0100101010 1100101010 0010101010 1010101010 0110101010 1110101010 0001101010 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 IC17 Address Capacity Code IC18 Address Capacity Code IC19 Address Capacity Code IC20 Address Capacity Code IC21 Address Capacity Code...

Page 194: ...1100011010 0010011010 1010011010 0110011010 1110011010 0001011010 1001011010 0101011010 1101011010 0011011010 1011011010 0111011010 1111011010 0000111010 1000111010 0100111010 1100111010 0010111010 1010111010 0110111010 1110111010 0001111010 101111010 0101111010 1101111010 0011111010 Variable capacity unit IC25 Address Capacity Code IC26 Address Capacity Code IC27 Address Capacity Code IC28 Addres...

Page 195: ...00110 0110100110 1110100110 IC17 Room Temperature IC18 Room Temperature IC19 Room Temperature IC20 Room Temperature IC21 Room Temperature IC22 Room Temperature IC23 Room Temperature IC24 Room Temperature IC25 Room Temperature IC26 Room Temperature IC27 Room Temperature IC28 Room Temperature IC29 Room Temperature IC30 Room Temperature IC31 Room Temperature IC32 Room Temperature IC17 Liquid Pipe Tem...

Page 196: ...perature IC26 Liquid Pipe Temperature IC27 Liquid Pipe Temperature IC28 Liquid Pipe Temperature IC29 Liquid Pipe Temperature IC30 Liquid Pipe Temperature IC31 Liquid Pipe Temperature IC32 Liquid Pipe Temperature IC17 Gas Pipe Temperature IC18 Gas Pipe Temperature IC19 Gas Pipe Temperature IC20 Gas Pipe Temperature IC21 Gas Pipe Temperature IC22 Gas Pipe Temperature IC23 Gas Pipe Temperature IC24 G...

Page 197: ... 0100001110 1100001110 0010001110 1010001110 0110001110 1110001110 0001001110 1001001110 0101001110 1101001110 0011001110 1011001110 0111001110 1111001110 0000101110 1000101110 0100101110 1100101110 0010101110 1010101110 IC19 SH IC20 SH IC21 SH IC22 SH IC23 SH IC24 SH IC25 SH IC26 SH IC27 SH IC28 SH IC29 SH IC30 SH IC31 SH IC32 SH IC17 SC IC18 SC IC19 SC IC20 SC IC21 SC IC22 SC IC23 SC IC24 SC IC2...

Page 198: ...1011110 0011011110 1011011110 0111011110 1111011110 IC23 LEV Opening Pulse IC24 LEV Opening Pulse IC25 LEV Opening Pulse IC26 LEV Opening Pulse IC27 LEV Opening Pulse IC28 LEV Opening Pulse IC29 LEV Opening Pulse IC30 LEV Opening Pulse IC31 LEV Opening Pulse IC32 LEV Opening Pulse IC17 Operation Mode IC18 Operation Mode IC19 Operation Mode IC20 Operation Mode IC21 Operation Mode IC22 Operation Mod...

Page 199: ...1110 1000111110 0100111110 1100111110 0010111110 1010111110 0110111110 1110111110 0001111110 1001111110 0101111110 1101111110 0011111110 1011111110 0111111110 1111111110 IC17 Filter IC18 Filter IC19 Filter IC20 Filter IC21 Filter IC22 Filter IC23 Filter IC24 Filter IC25 Filter IC26 Filter IC27 Filter IC28 Filter IC29 Filter IC30 Filter IC31 Filter IC32 Filter 0000 9999 ...

Page 200: ...r No 1 Over current protec tion TH10a Error TH5 Error Power off LEV open TH10b Error TH6 Error TH10b Error TH6 Error Lights for Normal Operation Backup No 9 Power off LEV closed Heat sink thermo stat operating TH7 Error TH7 Error LD8 is a relay output indicator which lights up at all times when the microcomputer s power is ON LD8 is determined as the re verse of CH11 The flag correspond ing to the...

Page 201: ...100000 0000010000 1000010000 0100010000 1100010000 0010010000 1010010000 0110010000 1110010000 0001010000 1001010000 0101010000 1101010000 0011010000 1011010000 0111010000 1111010000 0000110000 1000110000 0100110000 1100110000 0010110000 1010110000 0110110000 1110110000 0001110000 1001110000 0101110000 1101110000 0011110000 1011110000 0111110000 1111110000 TH11 Data TH3 Data TH4 Data TH5 Data TH6 ...

Page 202: ...01001000 0011001000 1011001000 0111001000 1111001000 0000101000 1000101000 0100101000 1100101000 0010101000 1010101000 0110101000 1110101000 0001101000 1001101000 0101101000 1101101000 0011101000 1011101000 0111101000 1111101000 0000011000 1000011000 0100011000 1100011000 0010011000 Accumulator level TH10a TH10b AK2 LEV2 LEV1 FANCON Output Value OS Address COMP 1 Operat ing Time First 4 Digits Las...

Page 203: ...011000 0000111000 1000111000 0100111000 1100111000 0010111000 1010111000 0110111000 1110111000 0001111000 1001111000 0101111000 1101111000 0011111000 1011111000 0111111000 1111111000 Relay Output Display 1 blinking display Relay Output Display 2 TH11 Data TH3 Data TH5 Data Low Pressure Sensor Data Accumulator Level TH10a TH10b AK2 LEV2 LEV1 TH6 SB5b 99 9 999 9 99 9 999 9 99 9 999 9 0 9 AL is also ...

Page 204: ...YO Service Handbook PUHY 400YMF B 500YMF B PUHY P400YMF B P500YMF B PUHY 600YSMF B 650YSMF B 700YSMF B 750YSMF B PUHY P600YSMF B P650YSMF B P700YSMF B P750YSMF B New publication effective Jan 2000 Specifications subject to change without notice Issued in Jan 2000 MEE99K045 Printed in Japan ...

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