Mitsubishi Electric Mr.Slim PUHZ-P100VKA Скачать руководство пользователя страница 68

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OCH670

<Display function of inspection for outdoor unit>

The blinking patterns of both LED1 (green) and LED2 (red) indicate the types of abnormality when it occurs. Types of

abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector

CNM on outdoor controller board.

Check refrigerant pipes for disconnection or leakage.

After the recovery of refrigerant, vacuum dry the whole

refrigerant circuit.

Refer to section “9-6 HOW TO CHECK THE PARTS”.

Check refrigerant circuit for operation.

—

A0~A8

[Display]

(1)Normal condition

(2)Abnormal condition

Unit condition

Outdoor controller board

A-Control Service Tool

LED1 (Green)

LED2 (Red)

Check code

When the power is turned on
When unit stops
When compressor is warming up

When unit operates

Lighted

Lighted
Lighted
Lighted

Not lighted

Indication of the display

Alternately blinking display

Operation mode

Not lighted

Lighted

00, etc.
08, etc.

C5, etc.

Indication

Error

Check

code*

Outdoor controller board

Contents

Inspection method

LED1 (Green) LED2 (Red)
1 blinking 2 blinking

2 blinking 1 blinking

2 blinking

3 blinking

4 blinking

5 blinking

Connector (63H) is open.

Startup time over

Check code is not defined.

Miswiring of indoor/outdoor unit conne-

cting wire, excessive number of indoor

units (4 units or more)

Miswiring of indoor/outdoor unit co-

nnecting wire (converse wiring or di-

sconnection)

Indoor/outdoor unit communication error

(signal receiving error) is detected by in-

door unit.

Indoor/outdoor unit communication error

(transmitting error) is detected by indoor

unit.

Indoor/outdoor unit communication error

(signal receiving error) is detected by

outdoor unit.

Indoor/outdoor unit communication error

(transmitting error) is detected by outdoor

unit.

Remote controller signal receiving

error is detected by remote controller.
Remote controller transmitting error

is detected by remote controller.
Remote controller signal receiving

error is detected by indoor unit.
Remote controller transmitting error

is detected by indoor unit.

Serial communication error

<Communication between outdoor

controller board and outdoor power

board>

<Communication between outdoor

controller board and M-NET P.C. board>

Communication error of M-NET

system

*Check code displayed on the remote controller.

Check if indoor/outdoor connecting wire is connected correctly.

Check if 4 or more indoor units are connected to outdoor unit.

Check if noise entered into indoor/outdoor connecting wire

or power supply.

Re-check error by turning off power, and on again.

Check if connector (63H) on the outdoor controller board is

not disconnected.

Check continuity of pressure switch (63H) by tester.

Check if connector (CN4) on outdoor controller board and

outdoor power board is not disconnected.

Check if there is poor connection of connector on outdoor

controller board(CNMNT and CNVMNT).

Check M-NET communication signal.

Check if remote controller is MA remote controller(PAR-21MAA).

Check if noise entered into transmission wire of remote controller.

Check if noise entered into indoor/outdoor connecting wire.

Re-check error by turning off power, and on again.

Check if connecting wire of indoor unit or remote controller

is connected correctly.

Check if noise entered into transmission wire of remote

controller.

Re-check error by turning off power, and on again.

Check if indoor/outdoor connecting wire is connected correctly.

Check if noise entered into indoor/outdoor connecting wire or

power supply.

Check if noise entered into indoor/outdoor controller board.

Re-check error by turning off power, and on again.

P.33

P.34

(EA)

P.34

(Eb)

P.35

(EC)

P.40

(E8)

P.41

(E9)
P.39

P.40

P.39

P.40

P.41

P.42

P.41

Detailed

reference

page

P.42-

P.45

Continued to the next page

Содержание Mr.Slim PUHZ-P100VKA

Страница 1: ...A TH ER PUHZ P100YKA TH PUHZ P100YKA TH ET PUHZ P100YKA TH ER PUHZ P125YKA TH PUHZ P125YKA TH ET PUHZ P125YKA TH ER PUHZ P140YKA TH PUHZ P125YKA TH ET PUHZ P125YKA TH ER PARTS CATALOG OCB670 CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 2 3 SPECIFICATIONS 6 4 DATA 7 5 OUTLINES AND DIMENSIONS 10 6 WIRING DIAGRAM 11 7 WIRING SPECIFICATIONS 14 8 REFRIGERANT SYSTEM DIAGRAM 19 9 TROUBLESHOOTING 21 ...

Страница 2: ...71 100KA L TH OCH661 OCB661 PKA RP50HAL PKA RP50HALR1 ER OCH453 OCB453 PKA RP60 71 100KAL PKA RP60 71 100KALR1 TH ER OCH452 OCB452 2 SAFETY PRECAUTION 2 2 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Preparation before the repair service Prepare the proper tools Prepare the proper protectors Provide adequate ventilation After stopping the operation of the air ...

Страница 3: ... Charge refrigerant from liquid phase of gas cylinder If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered Use new refrigerant pipes In case of using the existing pipes for R22 be careful with the following Be sure to clean the pipes and make sure that the insides of the pipes are clean Change flare nut to the one provided with...

Страница 4: ...eak check Refer to the flowchart below to determine if the existing pipes can be used and if it is necessary to use a filter dryer If the diameter of the existing pipes is different from the specified diameter refer to technological data materials to confirm if the pipes can be used Measure the existing pipe thickness and check for damage The existing pipe thickness meets specifica tions and the p...

Страница 5: ... 29 0 17 0 22 0 24 0 27 0 36 0 Nominal dimensions inch Flare nut dimensions Outside diameter Dimension B R410A 36 0mm for indoor unit R22 mm mm Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Applied oil Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or t...

Страница 6: ...3FBDMC L MNB33FBDMC L Motor output kW 1 5 2 5 2 5 1 5 2 5 2 5 Starter type Direct input Protection devices Shell thermistor H P switch Heat exchanger Plate fin coil Fan Fan drive x No Propeller fan x 1 Fan motor output kW 0 200 Air volume K min 79 87 87 79 87 87 Noise level Cooling SPL db 51 54 56 51 54 56 Heating SPL db 54 56 57 54 56 57 Cooling SPL db 70 72 75 70 72 75 Dimensions W mm inch 1 050...

Страница 7: ... C U V U W W V Winding Resistance PUHZ P125 140YKA TH ET ER PUHZ P100VKA TH ET ER PUHZ P100YKA TH ET ER SNB220FBGMT SNB220FBAMT Service Ref Piping length one way Initial charged 30m 40m 50m PUHZ P100VKA TH ET ER 0 0 6 1 2 3 3 PUHZ P125VKA TH ET ER 3 8 PUHZ P140VKA TH ET ER PUHZ P100YKA TH ET ER 3 3 PUHZ P125YKA TH ET ER 3 8 PUHZ P140YKA TH ET ER 4 2 COMPRESSOR TECHNICAL DATA ...

Страница 8: ...IMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR COOLING HEATING MODE 56 57 SPL dB LINE APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUN...

Страница 9: ...50 3 50 1 50 3 50 1 50 3 50 Voltage V 230 400 230 400 230 400 Current A 14 0 5 0 14 0 5 0 18 0 6 5 17 5 6 5 23 5 9 0 20 5 7 5 Refrigerant circuit Discharge Pressure MPa 2 79 2 68 3 00 2 62 3 21 2 78 Suction pressure MPa 0 86 0 68 0 85 0 65 0 77 0 62 Discharge temperature 77 9 78 5 76 7 69 7 88 1 72 6 Condensing temperature 47 0 45 3 49 9 44 6 53 2 47 0 Suction temperature 12 6 3 0 7 5 0 8 7 9 2 0 ...

Страница 10: ...10 OCH670 5 OUTLINES AND DIMENSIONS Unit mm PUHZ P100VKA TH ET ER PUHZ P100YKA TH ET ER PUHZ P125VKA TH ET ER PUHZ P125YKA TH ET ER PUHZ P140VKA TH ET ER PUHZ P140YKA TH ET ER ...

Страница 11: ...H7 TH8 TH33 SYMBOL SYMBOL NAME NAME NAME 1 2 3 4 5 6 7 8 OFF ON SW6 4 5 6 7 8 2 MODEL 100V The black square indicates a switch position 1 MODEL SELECT 2 SW6 1 to 3 Function switch P B MS 3 MC CN6 WH t 2 1 2 CN4 WH 1 2 TH8 W V U BK WH RD W V U IC600 CNDC PK 1 3 2 CNAC2 RD CNAC1 WH LI NI 1 3 1 3 IC500 DS E3 E4 EI E2 BK BK BK BK CN2 RD 7 7 1 TB3B TB1B TB1A TB3A BK RD RD BK DCL C B TH6 TH7 TH4 TH3 t t...

Страница 12: ...LEV B SYMBOL SYMBOL NAME NAME NAME 1 2 3 4 5 6 7 8 OFF ON 1 2 3 4 5 6 7 8 OFF ON SW6 4 5 6 7 8 2 MODEL 125V 140V The black square indicates a switch position 1 MODEL SELECT 2 SW6 1 to 3 Function switch P B MS 3 MC CN6 WH t 2 1 2 CN4 WH 1 2 TH8 W V U BK WH RD W V U IC600 CNDC PK 1 3 2 CNAC2 RD CNAC1 WH LI NI 1 3 1 3 IC500 DS E3 E4 EI E2 BK BK BK BK CN2 RD 7 7 1 TB3B TB1B TB2B TB1A TB2A TB3A BK WH R...

Страница 13: ...E NAME 1 2 3 4 5 6 7 8 OFF ON 1 2 3 4 5 6 7 8 OFF ON SW6 4 5 6 7 8 2 MODEL 100Y 1 2 3 4 5 6 7 8 OFF ON 125Y 140Y The black square indicates a switch position 1 MODEL SELECT 2 SW6 1 to 3 Function switch P B U POWER SUPPLY 3N 400V 50Hz TB1 V W RD WH BK MC 7 L1 L2 L3 N N F CNAC1 WH 1 3 CNDC PK 1 3 CNL BU 1 3 CNAC2 RD 1 3 CNCT RD 1 2 LO1 LO2 LO3 EI NI LI1 LI2 LI3 E3 S1 S2 S3 2 RD WH BK BU RD WH BK TB2...

Страница 14: ... 3N 3 ph 4 wires 50 Hz 400 V Outdoor unit input capacity Main switch Breaker 1 32 A 40 A 16 A Wiring Wire No size mm 2 Outdoor unit power supply 3 Min 4 3 Min 6 5 Min 1 5 Indoor unit Outdoor unit 2 3 1 5 Polar 3 1 5 Polar 3 1 5 Polar Indoor unit Outdoor unit earth 2 1 Min 1 5 1 Min 1 5 1 Min 1 5 Remote controller Indoor unit 3 2 0 3 Non polar 2 0 3 Non polar 2 0 3 Non polar Circuit rating Outdoor ...

Страница 15: ...CND CN01 ORANGE CN01 ORANGE S1 S2 S3 L N YELLOW BLUE BLUE YELLOW CND Indoor unit control board Note There are 3 types of labels labels A B and C Affix the appropriate labels to the units according to the wiring method ON OFF Set the SW8 3 to ON 1 2 SW8 3 C B Simultaneous twin triple system Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units F...

Страница 16: ...unit Outdoor unit earth Wire No o Size mm Be sure to connect the indoor outdoor connecting cables directly to the units no intermediate connections Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point Indoor unit Outdoor unit Indoor Outdoor separate power s...

Страница 17: ...earthing spots on the shield wire noise may enter into the shield wire because the earth wire and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots In case of single spot earthing noise does not enter into the shield wire because the earth wire and shield wire do not form 1 circuit To avoid communication errors caused by no...

Страница 18: ...l refrigerant addresses are 00 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 2 50 M NET Address No Setting example Switch setting SW11 1st digit SW12 2nd digit OFF ON 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4...

Страница 19: ...r TH33 Comp surface Compressor Strainer 50 Strainer 100 Strainer 100 4 way valve Muffler Charge plug Charge plug Stop valve Refrigerant GAS pipe connection 15 88 5 8 Refrigerant flow in cooling Refrigerant flow in heating Heat exchanger Thermistor TH6 Condenser Thermistor TH7 Ambient Thermistor TH3 Liquid Distributor LEV B PUHZ P100VKA TH ET ER PUHZ P100YKA TH ET ER PUHZ P125VKA TH ET ER PUHZ P125...

Страница 20: ...type on the control board of the outdoor unit The compressor and ventila tors indoor and outdoor units start operating refrigerant collecting operation begins LED1 and LED2 on the control board of the outdoor unit are lit Only push the pump down SWP switch if the unit is stopped However even if the unit is stopped and the pump down SWP switch is pushed less than 3 minutes after the compressor stop...

Страница 21: ...hing service 3There is no abnormality in electrical component controller board remote controller etc 1Re check the abnormal symptom 2Conduct trouble shooting and ascertain the cause of the trouble according to 9 5 TROUBLESHOOTING OF PROBLEMS 3Continue to operate unit for the time being if the cause is not ascertained 4There is no abnormality concerning of parts such as electrical component control...

Страница 22: ...F3 F4 Remain Vane Check the auto vane with the F1 F2 buttons Press the button to return to Test run operation Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after two hours Test run operation Auto vane check Press the button and open the Vane setting screen Function buttons F1 F2 F3 F4 MENU RETURN SELECT ON OFF 9 2 2 Test r...

Страница 23: ... occurs the following screen will appear Check the error status stop the operation and consult your dealer Contact information dealer s phone number will appear if the information have been registered F1 F2 F3 F4 F1 F2 F3 F4 1 Error information Error reset Error reset Error code Error unit IU Ref address Unt Model name Serial No Reset Page Reset current error Error reset OK Cancel Main menu Reset ...

Страница 24: ...u Error Unt dd mm yy Error history Cancel OK Delete error history Error history Check menu Error history deleted 2 Select Error history with the F1 or F2 button and press the button Select Check with the F1 or F2 button and press the button 3 Select Error history from the Check menu and press the button to view up to 16 error history records Four records are shown per page and the top record on th...

Страница 25: ...played green once and red twice blink alternately F3 F5 F9 After startup is displayed green twice and red once blink alternately EA Eb After startup is displayed only green lights up 00 After startup is displayed only green lights up 00 indicates digital display 2 Press TEST button twice 1 Turn on the main power supply 3 Press OPERATION SWITCH button 4 Press AIR DIRECTION button 5 Check the outdoo...

Страница 26: ...y Start this operation from the status of remote controller display turned off A and current operation mode are displayed 3 Press the button to activate mode then check whether cool air blows out from the unit 4 Press the button to activate mode then check whether warm air blows out from the unit 5 Press the button and check whether strong air blows out from the unit 6 Press the button and check w...

Страница 27: ...button Select Self check with the F1 or F2 button and press the button 1 Select Service from the Main menu and press the button 3 Check code unit number attribute will appear will appear if no error history is available 4 Resetting the error history Press the F4 button Reset on the screen that shows the check code history A confirmation screen will appear asking if you want to delete the check cod...

Страница 28: ...thing will appear on the remote controller display if the correct voltage 8 5 12 VDC is not supplied to the remote con troller If this is the case check the remote controller wiring and indoor units OK No problems are found with the remote controller Check other parts for problems E3 6832 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the tr...

Страница 29: ...f Check the error history for each unit using the remote controller 1 Switch to self diagnosis mode Press the CHECK button H in the picture above twice within 3 seconds The display content will change as shown below 2 Set the unit number or refrigerant address you want to diagnose Press the TEMP buttons and F in the picture above to select the desired number or address The number address changes b...

Страница 30: ...ay content will change as shown below Press the FILTER button A in the picture in the previous page 3 Remote controller self diagnosis result When the remote controller is functioning correctly Check for other possible causes as there is no problem with the remote controller When the remote controller malfunctions Error display 1 NG blinks The remote controller s transmitting receiv ing circuit is...

Страница 31: ...heck mode is cancelled Procedure 1 Press the CHECK button twice 2 Press the temperature buttons 3 Point the remote controller at the sensor on the indoor unit and press the HOUR button 4 Point the remote controller at the sensor on the indoor unit and press the ON OFF button Malfunction diagnosis method at maintenance service 9 3 6 Self diagnosis Wireless remote controller In case of trouble durin...

Страница 32: ...om Remark Number of times Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp flashes Check code Number of times Wireless remote controller Wired remote controller 1 P1 Intake sensor error P9 Pipe TH5 sensor error 2 P2 Pipe TH2 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector CN4F open 5 P5 Drain pump ...

Страница 33: ...pply terminal block TB1 2 Check following items a Connection of power supply terminal block TB1 b Connection of terminal on outdoor power circuit board 3 Check connection of the connector CNDC on the outdoor controller circuit board Refer to 9 9 TEST POINT DIAGRAM 4 Check connection of reactor DCL or ACL Refer to 6 WIRING DIAGRAM 5 a Check connection of outdoor power circuit board PUHZ P VKA outdo...

Страница 34: ...Abnormal if the number cannot be checked automatically due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes 2 Abnormal if outdoor controller circuit board recognizes excessive number of indoor units 1 Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units 2 Check diameter and length of indoor...

Страница 35: ...ing defrosting and discharge thermistor TH4 exceeds 110 C 2 Abnormal if discharge superheat TH4 TH5 increases All the conditions are detected simul taneously for 10 minutes continuously after 6 minutes past from compressor startup including the thermostat indica tion or recovery from defrosting During compressor operation in Cooling only When discharge superheat is less than 80 C in Cooling When c...

Страница 36: ...rcuit board TH3 TH6 TH7 Outdoor power circuit board CN6 2 Defective thermistor 3 Defective outdoor controller circuit board U6 4250 Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition 1 Outdoor stop valve is closed 2 Decrease of power supply voltage 3 Looseness disconnection or converse of compressor wiring connection 4 Defective compress...

Страница 37: ...VKA 7 Replace outdoor controller circuit board PUHZ P VKA 04 Input current sensor error L1 phase open error Decrease in input current through outdoor unit to 0 1 A only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A 1 L1 phase open PUHZ P YKA 2 Disconnection or loose connection between TB1 and outdoor noise filter circuit board PUHZ P YKA 3...

Страница 38: ...e in DC bus voltage to 460 V b Decrease in PFC control voltage to 12 V DC or lower c Increase in input current PUHZ P VKA only 1 Abnormal increase in power source voltage 2 Decrease in power source voltage instantaneous stop 3 Disconnection of compressor wiring 4 Misconnection of reactor DCL 5 Defective outdoor power circuit board 6 Defective Reactor DCL 7 Disconnection or loose connection of CN2 ...

Страница 39: ... cannot receive normally any data from remote controller board or from other indoor controller board for 3 minutes Check code E4 2 Indoor controller board cannot receive any signal from remote controller for 2 minutes Check code E4 1 Check disconnection or looseness of indoor unit or transmission wire of remote controller 2 Set one of the remote controllers main if there is no problem with the act...

Страница 40: ...ve transmitting receiving circuit of indoor controller board 6 Noise has entered into transmission wire of remote controller E6 6840 Indoor outdoor unit communication error Signal receiving error 1 Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on 2 Abnormal if indoor controller board could not receive any signal normally for 3 minut...

Страница 41: ...enser evaporator thermistor Defective refrigerant circuit 2 Converse connection of extension pipe on plural units connection 3 Converse wiring of indoor outdoor unit connecting wire on plural units connection 4 Defective detection of indoor room temperature and pipe condenser evaporator temperature thermistor 5 Stop valve is not opened completely Pipe temperature Detected as abnormal when the pipe...

Страница 42: ... are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect transmission of control and central control system of outdoor unit then abnormality is detected 1 Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote controller is not connected to terminal block for central control TB7 of outdoor unit 2 Chec...

Страница 43: ...erated address 3 Check disconnection or looseness of abnormality generated or abnormality detected transmission wire terminal block and connector 4 Check if tolerance range of transmission wire is not exceeded 5 Check if type of transmission wire is correct or not If the cause of trouble is not any of 1 5 above repair the defect then turn off the power supply of outdoor unit indoor unit and FRESH ...

Страница 44: ... supply of same refrig erant system with LOSSNAY is turned off or within 2 min utes of restart abnormality is detected 3 Contact failure of transmis sion wire of indoor unit of LOSSNAY 4 Disconnection of transmission connector CN2M of indoor unit 5 Defective transmitting receiv ing circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is non existent 1 The unit of former address do...

Страница 45: ... indoor controller board 1 When LED3 is not blinking Check indoor outdoor connecting wire for Miswiring Converse wiring of S1 and S2 or break of S3 wiring 2 When LED3 is blinking Indoor outdoor connecting wire is normal 4 Check LED display on outdoor controller circuit board Refer to 9 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Check protection device connector 63H for contact failure Refer to...

Страница 46: ...n for 2 minutes at most after the power supply ON 2 Local remote controller operation is prohibited Remote controlling adaptor is connected to CN32 on the indoor controller board Local remote controller operation is prohibited by centralised controller etc since it is connected to MELANS 3 Phenomena of No 2 1 Normal operation 2 Normal operation 3 Check the phenomena No 2 6 Remote controller displa...

Страница 47: ...agnosis after turning on the main power Normal The startup diagnosis will be over in around 2 minutes Miswiring of indoor outdoor connecting wire Breaking of indoor outdoor connecting wire S3 Defective indoor controller board Defective outdoor controller circuit board Refer to Self diagnosis action table in order to solve the trouble In case of communication errors the display of remote controller...

Страница 48: ...circuit board are melting Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses are melting The fuses on the outdoor controller circuit board will be melting when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are melting Check if miswiring breaking or poor contact is causin...

Страница 49: ...tive outdoor controller circuit board Replace the outdoor controller circuit board Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again Defective indoor power board Replace the indoor power board Defective outdoor power circuit board Replace the...

Страница 50: ...al block TB5 of the indoor unit Defective remote controller Replace the remote controller Breaking or poor contact of the remote controller wire Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between DC 10 V and 16 V DC the indoor controller board must be defective The remote co...

Страница 51: ... does not come on Phone Calls From Customers How to Respond Note 1 Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied 2 Unit cannot be restarted for a while after it s stopped 2 Wait around 3 minutes to restart unit The air conditioner is in a state of being protected by the microcomputer s directive Once the compressor is stopped the unit cannot ...

Страница 52: ...4 This is not a malfunction This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition 5 A sound similar to water flowing is heard from the unit 5 This is not a malfunction This is the sound which is heard when the refrigerant is flowing inside the indoor unit The fan speed does not match the setting of the r...

Страница 53: ...get sweated and water drips down Note Make use of optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once Water or moisture is expelled from the outdoor unit Batteries are being exhausted Replace them and press the reset button of remote controller The display of wireless remote controller gets dim or does not come on The indoor unit does not receive...

Страница 54: ...nect the connector then measure the resistance with a tester Winding temperature 20 C Normal Gray Black Gray Red Gray Yellow Gray Orange Abnormal 46 3 Ω Open or short Refer to the next page Fan motor MF1 MF2 Measure the resistance between the terminals with a tester Winding temperature 20 C Normal W V U 39 kΩ 105kΩ 4 3 kΩ 9 6 kΩ Open or short TH3 TH6 TH7 TH8 Measure the resistance between the term...

Страница 55: ...the breaker to start test run TEST POINT 1 VDC between 1 and 4 of the fan connector VDC 250 380 V DC TEST POINT 2 VCC between 5 and 4 of the fan connector VCC 15 V DC Recover wiring Replace outdoor controller board Replace outdoor controller board C B and fan motor MF1 Replace outdoor controller board Is the voltage normal Is there contact failure Yes No Did the fuse blow No Yes Check the operatio...

Страница 56: ... 17 k 2 B constant 4150 3 Rt 17exp 4150 273 t 323 1 1 Thermistor R120 7 465 k 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 Medium temperature thermistor Thermistor Heatsink TH8 20 C 250 k 30 C 160 k 40 C 104 k 50 C 70 k 60 C 48 k 70 C 34 k 80 C 24 k 90 C 17 5 k 100 C 13 0 k 110 C 9 8 k High temperature thermistor Thermistor Discharge TH4 Thermistor Comp surface TH33 0 10 20 30 40 50 20 10 0 ...

Страница 57: ...alve is locked more sound can be heard No sound is heard when the pulse number moves from B to A in case coil is burnt out or motor is locked by open phase Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve LEV M 1 6 4 4 3 2 1 1 Gray Orange Red Yellow Black 2 3 4 5 Connector LEV A LEV B 12 V DC Outdoor controller bo...

Страница 58: ...erwise pipes can bend due to stress How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly att...

Страница 59: ... for how to set the indoor unit 3 During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible 4 Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the ...

Страница 60: ...0 50 35 5 30 5 HEAT 20 5 45 50 22 5 80 5 7 5 30 5 1 1 1 1 2 2 Remarks 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergency operation and TH values are mismatched set the thermistors to open short And the unit runs emergency operation with the values listed above 2 If one thermistor is set to open short the v...

Страница 61: ...2 Input of low level sound priority mode 1 to 3 Input of external contact point SW7 Demand control setting 63H High pressure switch SW4 Test operation SW6 Model select SW5 Function switch TH4 Thermistor Discharge TH7 6 Thermistor Ambient 2 phase pipe VFG Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as CNF17 4 VSP Voltage between pins of C5A C5B 0 V DC when stopped 1 6 5 V DC wh...

Страница 62: ...the outdoor controller circuit board CNAC CNDC Connect to the outdoor controller circuit board CNDC LO1 LO2 LO3 POWER SUPPLY LO1 LO2 LO2 LO3 LO3 LO1 400 V AC OUTPUT Connect to the outdoor power circuit board TB L1 L2 L3 CNCT Primary current Connect to the outdoor power circuit board CN5 CNL Connect to the ACL4 E3 Connect to the electrical parts box E2 Connect to the electrical parts box PUHZ P100Y...

Страница 63: ... printed on the board P1 N1 R S N2 P3 U V W N3 L3 P2 L1 L2 CNAC1 CNAC2 230 V AC Connect to the outdoor controller circuit board CNAC EI E2 E3 E4 Connect to the earth CN2 Connect to the outdoor controller circuit board CN2 1 5 Transmitting signal to outdoor controller circuit board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 16 V DC 6 5 16 V DC 7 5 16 V DC CN4 Connect to the outdoor controller circ...

Страница 64: ...YKA TH ET ER CN5 Detection of primary current Connect to the outdoor noise filter circuit board CNCT CN4 Connect to the outdoor controller circuit board CN4 CN2 Connect to the outdoor controller circuit board CN2 1 5 Power circuit board Transmitting signal to the controller board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 Not used 6 5 16 V DC 7 5 16 V DC 5 1 2 6 7 Diode module DIP IPM TAB connect...

Страница 65: ...the DIP SW1 1 on the outdoor controller board from OFF to ON 2 Manual defrost will start by the above operation 1 if all these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous manual defrost is finished Pipe temperature is less than or equal to 8 C Manual defrost will finish if certain conditions are satisfied Manual def...

Страница 66: ...unction 2 Power failure automatic recovery 2 Auto recovery No auto recovery When power supply ON 3 4 5 6 No function SW7 4 1 Setting of demand control 3 SW7 1 SW7 2 Power consumption Demand switch ON OFF OFF 0 Operation stop ON OFF 50 OFF ON 75 2 3 Max Hz setting cooling Max Hz cooling o 0 8 Normal Always 4 Max Hz setting heating Max Hz heating o 0 8 Normal Always 5 No function 6 Defrost Hz settin...

Страница 67: ... low noise mode B On site arrangement C External input adapter PAC SC36NA E X Relay D Outdoor unit control board E Max 10 m F Power supply for relay A SW1 Orange 1 3 Brown Red E B F CNDM X X C D A Circuit diagram example Demand function B On site arrangement X Y Relay C External input adapter PAC SC36NA E D Outdoor unit control board E Max 10 m F Power supply for relay By performing the following ...

Страница 68: ...ote controller signal receiving error is detected by remote controller Remote controller transmitting error is detected by remote controller Remote controller signal receiving error is detected by indoor unit Remote controller transmitting error is detected by indoor unit Serial communication error Communication between outdoor controller board and outdoor power board Communication between outdoor...

Страница 69: ...H3 TH4 TH6 TH7 TH8 and TH33 on outdoor controller board and connector CN6 on outdoor power board are disconnected 2Measure resistance value of outdoor thermistors Abnormality of heatsink temperature 1Check if indoor outdoor units have a short cycle on their air ducts 2Measure resistance value of outdoor thermistor TH8 1Check the outdoor fan motor 2Check if connector TH3 on outdoor controller board...

Страница 70: ... Inspection code is displayed when compressor stops due to the work of protection devices Display Contents to be inspected When power is turned on F5 E8 E9 EA Eb EC E0 E7 63H connector yellow is open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive num...

Страница 71: ... or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 10 hours 0 5 s 0 5 s 2 s 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Compressor operating current 0 to 50 0 to 50 Note Omit the figures after the decimal fractions A Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 i...

Страница 72: ...nd ones digit are displayed by turns Example When 130 0 5 s 0 5 s 2 s A Code display Code display 0 to 50 When no error history 0 and are displayed by turns When no error history 0 and are displayed by turns 1 ON 2 3 4 5 6 Thermostat ON time 0 to 999 Test run elapsed time 0 to 120 0 to 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example Wh...

Страница 73: ...ingle phase 3 phase Display details 1 Cooling only 0 Single phase 2 3 phase Example When the unit is 3 phase and cooling only 30 is displayed 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Indoor pipe temperature Cond Eva TH5 1 Indoor 1 39 to 88 39 to 88 When the temperature is 0 or less and temperature are displayed by turns 39 to 88 When the temperature is 0 or less and temperature are displayed by turns 39 to 8...

Страница 74: ...e is 0 or less and temperature are displayed by turns When the thermistor detects 100 or more hundreds digit tens digit and ones digit are displayed by turns Outdoor ambient temperature TH7 39 to 88 39 to 88 When the temperature is 0 or less and temperature are displayed by turns Normal Overvoltage error Undervoltage error Input current sensor error L1 phase open error Abnormal power synchronous s...

Страница 75: ...postponement Code display Error history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns 6 Outdoor 2 phase pipe TH6 7 Outdoor ambient temperature TH7 8 Outdoor heatsink TH8 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Error thermistor display When there is no error thermistor is displayed Code display Operation frequency ...

Страница 76: ...d temperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor heatsink temperature TH8 on error occurring 40 to 200 40 to 200 When the temperature is 0 C or less and temperature are displayed by turns When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 15 15...

Страница 77: ... operating frequency 1 ON 2 3 4 5 6 Code display The following code will be a help to know the operating status of unit Display Compressor operating frequency control Display Compressor operating frequency control Primary current control Secondary current control 1 2 1 4 8 2 The tens digit The ones digit In this digit the total number of activated control is displayed Preventive control for excess...

Страница 78: ... of the sensor on all the indoor units Initial setting ta A B 2 ta A B 2 ta A ta A No 2 The data of the sensor on the indoor unit that connected with remote controller ta A ta B ta A ta A No 3 The data of the sensor on main remote controller ta C ta C ta C ta C OUTDOOR INDOOR REMOTE MAIN REMOTE SUB INDOOR OUTDOOR INDOOR REMOTE MAIN REMOTE SUB OUTDOOR INDOOR REMOTE MAIN OUTDOOR INDOOR REMOTE MAIN R...

Страница 79: ... and select Service to make the maintenance setting Maintenance password is required Note The initial maintenance password is 9999 Change the default password as necessary to prevent unauthorized access Have the password available for those who need it If you forget your maintenance password you can initialize the password to the default password 9999 by pressing and holding the F1 and F2 buttons ...

Страница 80: ...change the setting number with the F3 or F4 button 1 Select Service from the Main menu and press the button Checking the indoor unit No When the button is pressed the target indoor unit will start fan operation If the unit is common or when running all units all indoor units for the selected refrigerant address will start fan operation F1 F2 F3 F4 Function setting Ref address Sending data Grp 5 Wh...

Страница 81: ...ting Press E Specified indoor unit FAN operation Change refrigerant address or unit No 2 Switch to function setting mode Press A and B at the same time with the remote controller stopped First try to familiarize yourself with the flow of the function selection procedure In this section an example of setting the room temperature detection position is given For actual operations refer to steps 1 to ...

Страница 82: ... to the selected unit number In this case the refrigerant address and unit number may be incorrect so repeat steps 2 and 3 to set the correct ones When grouping different refrigerant systems if an indoor unit other than the one to which the refrigerant address has been set performs fan operation there may be another refrigerant address that is the same as the specified one In this case check the D...

Страница 83: ... Direct the wireless remote controller toward the receiver of the indoor unit and press the button 3 Set the unit number Press the temp button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Notes 1 If a unit number that cannot be recognized by the unit is entered 3 ...

Страница 84: ...any button turns the backlight on and it will stay lit for a certain period of time depending on the screen Backlit LCD This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error ON OFF lamp Main display Press to change the operation mode Main menu Press to move the cursor down Function button F1 Main display Press to ...

Страница 85: ...uver Vent Lossnay High power Weekly timer Restriction Maintenance Initial setting On Off timer Auto Off timer Temp range Operation lock Manual vane angle Main Sub Timer Main display Contrast Display details Auto mode Administrator password Language selection Service Service menu Input maintenance info Function setting Lossnay City Multi only Check Self check Maintenance password Remote controller ...

Страница 86: ...e preset temperature after performing energy save operation for a specified time period Time can be set to a value from 30 and 120 in 10 minute increments This function will not be valid when the preset temperature ranges are restricted Schedule Set the start stop times to operate the units in the energy save mode for each day of the week and set the energy saving rate Up to four energy save opera...

Страница 87: ...run Input maintenance Select Input maintenance Info from the Service menu to bring up the Maintenance information screen The following settings can be made from the Maintenance Information screen Model name input Serial No input Dealer information input Function setting Make the settings for the indoor unit functions via the remote controller as necessary LOSSNAY setting City Multi only This setti...

Страница 88: ...s not active Initial setting value The temperature range can be changed on cooling dry mode The temperature range can be changed on heating mode The temperature range can be changed on automatic mode The remote controller will be the main controller Initial setting value The remote controller will be the sub controller The clock function can be used Initial setting value The clock function cannot ...

Страница 89: ...matic mode is displayed when the operation mode is selected 2 OFF The automatic mode is not displayed when the operation mode is selected 4 3 Mode selection setting 1 Remote controller main sub setting To switch the setting press the ON OFF button 1 Main The controller will be the main controller 2 Sub The controller will be the sub controller 2 Use of clock setting To switch the setting press the...

Страница 90: ...ect the required setting with the F3 or F4 button Ref address setting 0 15 Request code setting Press the button Data will be collected and displayed F1 F2 F3 F4 Request code Request Request Request code Ref address Request code Cursor Ref address Request code Cursor Request code 004 Discharge temperature 69 C Data display Relay output state C 4 Operation mode Operation state Request code 0 1 Sele...

Страница 91: ...d refrigerant address Screen B 4 Press the CLOCK buttons and to set the desired request code No 5 Press the FILTER button to perform data request The requested data will be displayed at C in the same way as in maintenance mode Data collected during operation of the remote controller will be displayed The collected data such as temperature data will not be updated automatically even if the data cha...

Страница 92: ...air temperature Unit No 1 Indoor unit Intake air temperature Unit No 2 Indoor unit Intake air temperature Unit No 3 Indoor unit Intake air temperature Unit No 4 Indoor unit Liquid pipe temperature Unit No 1 Indoor unit Liquid pipe temperature Unit No 2 Indoor unit Liquid pipe temperature Unit No 3 Indoor unit Liquid pipe temperature Unit No 4 Indoor unit Cond Eva pipe temperature Unit No 1 Indoor ...

Страница 93: ... Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displa...

Страница 94: ...istory 2 second to last Error history 3 third to last Abnormal thermistor display TH6 TH7 TH8 Operation mode at time of error Compressor Operating current at time of error Compressor Accumulated operating time at time of error Compressor Number of operation times at time of error Discharge temperature at time of error Outdoor unit Liquid pipe 2 temperature at time of error Outdoor unit 2 phase pip...

Страница 95: ...l For indoor fan pulsation control For indoor DC brushless motor control Indoor Fan operating time After filter is reset Indoor Total operating time Fan motor ON time Indoor fan output value Sj value Indoor fan output value Pulsation ON OFF Indoor fan output value duty value Indoor unit Capacity setting information Indoor unit SW3 information Wireless pair No indoor control board side setting Indo...

Страница 96: ...state Operation mode Indoor unit Control state Request code 50 Data display Operation mode Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Display State 0 Normal 1 Preparing for heat operation 2 3 4 Heater is ON 5 Anti freeze protection is ON 6 Overheat protection is ON 7 RequestingcompressortoturnOFF F There are no corresponding units Outdoor unit Control state Request code 51 Dat...

Страница 97: ...1 Error content 2 0 0 Error content 1 Detected Display Overvoltage Undervoltage L1 phase Power synchronizing error error open error signal error 0 1 2 3 4 5 6 7 8 9 A b C d E F Error content 2 Detected Display Converter Fo PAM error error 0 1 2 3 1 1 2 Note Refer to 9 4 SELF DIAGNOSIS ACTION TABLE for more information Actuator output state 1 Display SV1 Four way valve Compressor 0 1 2 3 4 5 6 7 8 ...

Страница 98: ...Outdoor unit Capacity setting display Request code 70 Data display Capacity 10 48 25 42 Outdoor unit Setting information Request code 71 Data display Setting information 1 Setting information 2 0 0 Setting content Display Setting value 0 1 50 2 75 0 3 100 Model SP42 SP48 Setting information 1 Display Defrost mode 0 Standard 1 For high humidity Setting information 2 Display Single Heat pump 3 phase...

Страница 99: ...Capacity setting state 00 10 42 01 11 02 12 48 03 13 04 14 05 15 06 16 07 17 08 18 09 19 0A 1A 0b 1b 0C 1C 0d 1d 0E 1E 0F 1F Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 No 3 J41 J42disconnected Wireless pair No indoor control board side setting Request code 165 Data display 0 0 See the table on the right ...

Страница 100: ...time COMP On Off COMP frequency A Hz Hr times Hr Ref address Cool Ref address Cool Ref address Cool Sub cool OU TH4 temp OU TH6 temp OU TH7 temp IU air temp IU HEX temp IU filter time Select Smooth maintenance with the F1 or F2 button and press the button Select Check with the F1 or F2 button and press the button Select Service from the Main menu and press the button Set each item Select the item ...

Страница 101: ...the data with the air conditioner stopped skip to step 4 Fixed Hz operation The operating frequency can be fixed to stabilize operation of inverter model If the air conditioner is currently stopped start it by this operation 2 Press the MODE button to select the desired operation mode Display A 3 Press the FILTER button to confirm the setting Display D Waiting for stabilization Stabilized After 10...

Страница 102: ...exchanger temperature Comp discharge temperature Outdoor ambient temperature INDOOR UNIT INLET TEMP INDOOR UNIT H EXC TEMP INDOOR UNIT FILTER USE H Indoor room temperature Heat exchanger temperature Filter operating time 12 340 hours Display C Waiting for response Blinking After approx 10 seconds 1 1 Refrigerant address 00 Twin Refrigerant address 00 Outdoor unit Indoor unit 02 Indoor unit 01 Outd...

Страница 103: ... Indoor heat exchanger temperature 7 Indoor intake air temperature Cool Classification Item Result Inspection Temperature difference Heat Inspection Temperature difference Stable Unstable Stable Unstable Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 or higher or indoor intake air temperature is 23 or lower B In he...

Страница 104: ...Disconnect the connector CNF1 LEV A and LEV B on the controller circuit board Symbols on the board CNF1 Fan motor LEV A and LEV B LEV 5 Disconnect the pipe side connections of the following parts Thermistor Liquid TH3 Thermistor Discharge TH4 Thermistor 2 phase pipe Ambient TH7 6 High pressure switch 63H Thermistor Comp surface TH33 4way valve 21S4 6 Remove a nut from the terminal cover See Photo1...

Страница 105: ...x make sure that the wirings are correct 2 When exchanging the reactor make sure to exchange all the 3 reactors 8 Remove 2 electrical parts box fixing screws 4 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 6 YKA type Electrical parts box Electrical parts box fixing screw Photo 5 VKA type Electric...

Страница 106: ...n the bottom plate of the electrical parts box See Photo 11 10 Remove the reactor See Photo 11 Note 1 When reassembling the electrical parts box make sure that the wirings are correct Photo 9 Photo 11 Screws2 Electrical parts box Connectors of Reactor Reactor 5 Removing the thermistor 2 phase pipe TH6 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connec...

Страница 107: ...nel fixing screws 5 12 and remove the back cover panel See Photo 4 5 Remove 4 right side panel fixing screws 5 12 in the rear of the unit and remove the right side panel See Photo 18 6 Disconnect the connectors TH3 white TH4 white and TH33 black on the controller circuit board in the electrical parts box 7 Loosen the fastener for the lead wire under the electrical parts box See Photo 14 8 Pull out...

Страница 108: ... on the controller circuit board in the electrical parts box 9 Removing LEV 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 2 front cover panel fixing screws 5 12 and remove the front cover panel See Photo 1 4 Remove 4 back cover panel fixing screws 5 12 and remove the back cover panel See Photo 4 5 Remove 3 valve bed fixing screws 4 10 and 4 stop valve fixing sc...

Страница 109: ...the service panel See Photo 1 Removing the 4 way valve coil 2 Remove 4 way valve coil fixing screw M5 6 5 3 Remove the 4 way valve coil by sliding the coil toward you 4 Disconnect the connector 21S4 green on the outdoor multi controller circuit board in the electrical parts box 12 Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electr...

Страница 110: ...ICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Specifications are subject to change without notice CCopyright 2017 MITSUBISHI ELECTRIC CORPORATION Published Sep 2017 No OCH670 Made in Japan ...

Страница 111: ...40EA R410A Standard Inverter Single Phase Product Information Sheet PSA RP100 140KA R410A Standard Inverter Product Information Sheet PUHZ P100 140V Y KA Parts List OCB670 PUHZ P100 140V Y KA Service Manual OCH670 PUHZ P100 140V YKA Installation Manual ...

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