Mitsubishi Electric PUHZ-HRP100VHA Service Manual Download Page 114

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114

OPERATING PROCEDURE

PHOTOS

Photo 9

5. Removing the thermistor <Outdoor 2-phase pipe> (TH6)

and thermistor <Outdoor> (TH7)

(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Disconnect the connectors, TH7/6 (red) on the controller

circuit board in the electrical parts box.

(4) Loosen the 2 wire clamps on top of the electrical parts box.
(5) Pull out the thermistor <Outdoor 2-phase pipe> (TH6) and

thermistor <Outdoor> (TH7) from the sensor holder.

Note: In case of replacing thermistor <Outdoor 2-phase

pipe> (TH6) or thermistor <Outdoor> (TH7), replace
it together.

6. Removing the thermistor <Discharge> (TH4)

(1) Remove the service panel. (See Figure 1)
(2) Disconnect the connector TH4 (white) on the controller

circuit board in the electrical parts box.

(4) Loosen the wire clamps bottom of the electrical parts box

and separator.

(5) Pull out the thermistor <Discharge> (TH4) from the sensor

holder.

Photo 12

7. Removing the thermistor <Outdoor pipe> (TH3) (TH32) (TH33)

(1) Remove the service panel. (See Figure 1)
(2) Disconnect the connectors, TH3 (white) and TH32 (black),

TH33 (yellow) on the controller circuit board in the
electrical parts box.

(3) Loosen the wire clamps bottom of the electrical parts box

and separator.

(4) Pull out the thermistor <Outdoor pipe> (TH3), (TH32),

(TH33) from the sensor holder.

(TH33 : See Photo 15)

Photo 11

Photo 10

Lead wire of
thermistor
<Outdoor>
(TH7)

Sensor holder

Clamp

Muffler

Separator

Compressor
(MC)

Thermistor
<Discharge>

Clamp
(for TH3)

Thermistor <Outdoor pipe> (TH3)

Power
receiver

Thermistor
<Outdoor pipe>
(TH32)

Low pressure
switch(63L)

Photo 13

Clamp

Thermistor
<Outdoor 2-phase pipe>(TH6)

Electrical parts box

OCH425D

Summary of Contents for PUHZ-HRP100VHA

Page 1: ...UHZ HRP71VHA2 PUHZ HRP71VHA2R1 PUHZ HRP100VHA2 PUHZ HRP100VHA2R1 PUHZ HRP100VHA2R2 PUHZ HRP100YHA2 PUHZ HRP100YHA2R1 PUHZ HRP125YHA2 PUHZ HRP125YHA2R1 CONTENTS 1 TECHNICAL CHANGES 2 2 REFERENCE MANUAL 2 3 SAFETY PRECAUTION 3 4 FEATURES 7 5 SPECIFICATIONS 8 6 DATA 9 7 OUTLINES AND DIMENSIONS 12 8 WIRING DIAGRAM 14 9 WIRING SPECIFICATIONS 20 10 REFRIGERANT SYSTEM DIAGRAM 25 11 TROUBLESHOOTING 27 12 ...

Page 2: ...ise filter circuit board N F and Active filter module ACTM including P B PUHZ HRP100YHA PUHZ HRP100YHA2 PUHZ HRP125YHA PUHZ HRP125YHA2 Pressure sensor 63HS has been added Compressor MC has been changed ANB33FJBMT ANB33FJDMT Thermistor Discharge TH4 has been changed Fan motors MF1 2 have been changed Fan grilles have been changed Controller circuit board C B has been changed 2 1 INDOOR UNIT SERVICE...

Page 3: ...pump adaptor Size adjustment gauge Gauge manifold Torque wrench Gas leak detector Charge hose Tools for R410A Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of compressor If large amount of mineral oil enters that can cause deterio ration of...

Page 4: ...n performing service install a filter drier simultaneously Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder for R410A on the market is syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase No Tool name Specifications 1 Gauge manifold Onl...

Page 5: ...existing pipes are collected by replace filter The air conditioner automatically performs cooling operation through filter replacement for about 2 hours HRP HA 2 HRP HA2R1 Measure the existing pipe thickness and check for damage Check if existing air conditioner can operate Existing air conditioner can operate Disconnect existing air con ditioner from piping Existing pipes can be reused In case th...

Page 6: ...Nominal dimensions inch Flare nut dimensions Outside diameter Dimension B mm R410A 36 0mm for indoor unit of RP100 125 and 140 R22 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 thermis tor va...

Page 7: ...the length 30 m max and 5 m min of piping The additional refrigerant charging work during installation often causes problems It is completely eliminated by chargelss system This unique system improves the quality and reli ability of the work done It also helps to speed up the installation time REFRIGERANT LEAKAGE DETECTION FUNCTION PUHZ HRP HA 2 can detect refrigerant leakage which may happen duri...

Page 8: ... HP switch LP switch Discharge thermo Single 50Hz 230V OUTDOOR UNIT REFRIGERANT PIPING 2 5 51 52 A kW W kW min CFM dB dB mm in mm in mm in kg lbs kg lbs L mm in mm in Power supply phase cycle voltage Max current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices Crankcase heater Heat exchanger Fan Fan drive No Fan motor output Airflow Defrost method N...

Page 9: ...100VHA2R2 PUHZ HRP125YHA PUHZ HRP125YHA2 PUHZ HRP125YHA2R1 U V U W W V Service Ref Compressor model Winding Resistance ANB33FJBMT at 20 0 302 0 302 0 302 PUHZ HRP100YHA PUHZ HRP125YHA ANB33FJCMT 0 188 0 188 0 188 PUHZ HRP71VHA PUHZ HRP100VHA U V U W W V Service Ref Compressor model Winding Resistance ANB33FJDMT at 20 0 302 0 302 0 302 PUHZ HRP100YHA2 PUHZ HRP125YHA2 PUHZ HRP100YHA2R1 PUHZ HRP125YH...

Page 10: ...HA PUHZ HRP100VHA PUHZ HRP100YHA PUHZ HRP125YHA COOLING MODE HEATING 52 SPL dB 53 LINE PUHZ HRP71VHA2 R1 PUHZ HRP100VHA2 R1 R2 PUHZ HRP100YHA2 R1 PUHZ HRP125YHA2 R1 1 5m 1m MICROPHONE UNIT GROUND NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 90 80 70 60 50 40 30 20 10 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 μ bar 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOIS...

Page 11: ...ke air temperature Discharge air temperature Intake air temperature V A V A MPa MPa m Indoor unit D B W B D B D B W B PEAD RP100JA PEAD RP125JA PEAD RP100JA PEAD RP125JA Cooling 10 000 3 06 Heating 11 200 3 10 Cooling 12 500 3 89 Heating 14 000 3 88 11 10 3 69 2 61 0 97 68 44 13 7 5 27 19 16 35 24 0 89 0 18 11 28 3 74 2 22 0 72 65 37 4 7 5 20 15 35 7 6 4 92 2 79 0 89 72 47 8 7 5 27 19 15 35 24 0 8...

Page 12: ...nockout Power supply wiring hole 2 W27Knockout W 9 2 92 65 45 40 27 55 23 73 63 Front piping hole Knockout Front trunking hole Knockout Power supply wiring hole 2 W27Knockout W 9 2 145 145 220 30 145 81 219 71 71 Bottom piping hole Knockout Drain hole 5 W33 1350 23 950 A 1 447 1 443 371 635 322 Handle for moving HRP VHA HRP YHA 1 079 A 930 Over Over Over Over Less than Piping and wiring connection...

Page 13: ...2 27Knockout 9 2 92 65 45 40 27 55 23 73 63 Front piping hole Knockout Front trunking hole Knockout Power supply wiring hole 2 27Knockout 9 2 145 145 220 30 145 81 219 71 71 Bottom piping hole Knockout Drain hole 5 33 23 HRP VHA2 HRP YHA2 1 079 A 930 Over Over Over Over Less than Piping and wiring connections can be made from 4 directions front right rear and below 4 PIPING WIRING DIRECTIONS 3 FOU...

Page 14: ...AME TB7 CN5 CND CN2M SW1 SW11 SW12 LED1 LED2 LED3 LED4 LED5 Terminal Block M net connection Connector Transmission Connector Power Supply Connector M NET communication Switch Status of communication Switch Address setting 1s digit Switch Address setting 10s digit LED Power Supply DC5V LED Connection to Outdoor Unit LED Transmission Sending LED Transmission Receiving LED Power Supply DC12V 1 2 3 4 ...

Page 15: ...ion Inspection Indicators CNM CNMNT CNVMNT Connector A Control Service Inspection Kit Connector Connect to Optional M NET Adapter Board Connector Connect to Optional M NET Adapter Board CN3S Connector Connection for Option CNDM Connector Connection for Option Contact Input CN51 Connector Connection for Option SS Connector Connection for Option X51 X52 X55 Relay Fuse T6 3AL250V F1 F4 Connection Ter...

Page 16: ...DC PNK BLK WHT U CY1 CY2 LI NI EI E4 E2 E3 U POWER SUPPLY N 230V 50Hz INDOOR UNIT TB1 L N S1 S2 S3 MC 3 1 3 1 2 RED CNAC1 WHT CNAC2 RED 1 3 1 3 CN52C RED 52C 52C BLU YLW GRN YLW ORN BRN 5 3 5 1 RED WHT WHT RED RED BLK BLK BLK BLK DCL1 DCL CB TB1 MC MF1 MF2 21S4 SV TH4 TH6 TH7 LEV A LEV B LEV C DCL Terminal Block Power Supply Indoor Outdoor Motor for Compressor Fan Motor Solenoid Valve Four Way Val...

Page 17: ...witch Address setting 10s digit LED1 LED Power Supply DC5V LED2 LED Connection to Outdoor Unit LED3 LED Transmission Sending LED4 LED Transmission Receiving LED5 LED Power Supply DC12V TB2 Terminal Block Indoor Outdoor Motor for Compressor Fan Motor Solenoid Valve Four Way Valve High Pressure Switch 63L Low Pressure Switch SV Solenoid Valve Bypass Valve Thermistor Discharge Thermistor Outdoor 2 Ph...

Page 18: ...ding LED Transmission Receiving LED Power Supply DC12V TB1 MC MF1 MF2 21S4 TH4 TH6 TH7 LEV A LEV B LEV C DCL Terminal Block Power Supply Indoor Outdoor Motor for Compressor Fan Motor Solenoid Valve Four Way Valve 63L Low Pressure Switch CY1 CY2 Capacitor U V W LI Connection Terminal U V W Phase Thermistor Discharge Thermistor 2 Phase Thermistor Ambient Electronic Expansion Valve Reactor Connection...

Page 19: ...rd Connection Terminal U V W Phase P B TB U V W Noise Filter Circuit Board Connection Terminal L1 L2 L3 N Power Supply N F LI1 LI2 LI3 NI Connection Terminal L1 L2 L3 N Power Supply LO1 LO2 LO3 NO Controller Circuit Board Connector Emergency Operation Switch Function Switch SW8 CN31 C B Connection Terminal N IN Connection Terminal CK OU Connection Terminal Ground GD1 GD3 Connection Terminal L1 Pow...

Page 20: ...h poles shall be provided Use earth leakage breaker NV 2 Refer to 9 3 3 The 10 m wire is attached in the remote controller accessory 4 The figures are NOT always against the ground S3 terminal has DC 24 V against S2 terminal However between S3 and S1 these terminals are NOT electrically insulated by the transformer or other device Notes 1 Wiring size must comply with the applicable local and natio...

Page 21: ... in each pole shall be provided Use earth leakage breaker NV The breaker shall be provided to ensure disconnection of all active phase conductor of the supply 2 Max 120 m 3 The 10 m wire is attached in the remote controller accessory Max 500 m 4 The figures are NOT always against the ground Notes 1 Wiring size must comply with the applicable local and national code 2 Power supply cables and indoor...

Page 22: ... 1 Min 2 5 Indoor unit Outdoor unit earth Wire No Size 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 sep...

Page 23: ...n the shield wire noise may enter into the shield wire because the ground wire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among grounding spots In case of single spot grounding noise does not enter into the shield wire because the ground wire and shield wire do not form one circuit To avoid communication errors caused by noise make...

Page 24: ... 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 ones digit SW12 tens 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 5 6 1 2 3 4 5 6 1 2 3 4 ...

Page 25: ...tdoor pipe Low pressure switch 63L High pressure switch 63H Refrigerant flow in cooling Refrigerant flow in heating High pressure sensor 63HS only for HRP HA2 PUHZ HRP71VHA2R1 PUHZ HRP100VHA2R1 PUHZ HRP100YHA2R1 PUHZ HRP125YHA2R1 PUHZ HRP100VHA2R2 Distributor Thermistor TH7 Outdoor Heat exchanger Refrigerant GAS pipe connection 5 8 inch Refrigerant LIQUID pipe connection 3 8 inch Stop valve with s...

Page 26: ... replacement operation The replacement operation is performed using the cooling system Cool air will flow from the indoor unit during the replacement operation During the replacement operation TEST RUN is displayed on the remote controller and LED1 green and LED2 red on the control board of the outdoor unit blink together 3 Replacement operation requires at least 2 hours to complete After setting ...

Page 27: ...is no abnormality in electrical component controller board remote controller and etc Re check the abnormal symptom Conduct trouble shooting and ascertain the cause of the trouble according to 11 5 Troubleshooting by inferior phenomena Continue to operate unit for the time being if the cause is not ascertained There is no abnormality concerning of parts such as electrical component controller board...

Page 28: ...ely F1 After startup is displayed 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 DIRECTIO...

Page 29: ...controller display turned off A TEST RUN and current operation mode are displayed 3 Press the MODE button to activate COOL mode then check whether cool air is blown out from the unit 4 Press the MODE button to activate HEAT mode then check whether warm air is blown out from the unit 5 Press the FAN button and check whether strong air is blown out from the unit 6 Press the VANE button and check whe...

Page 30: ... service handbook Reset the error history Display the error history in the diagnosis result display screen see step Error code 2 or 4 digits Alternating Display Address 3 digits or unit number 2 digits The refrigerant address will begin to blink approximately 3 seconds after being selected and the self diagnosis process will begin Unit number or refrigerant address to be diagnosed Error code 2 or ...

Page 31: ... display content will change as shown below Press the FILTER button to start self diagnosis 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 defective...

Page 32: ...lled 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 11 3 4 Malfunction diagnosis method by wireless remote controller In case of trouble durin...

Page 33: ...mes Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks 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 open 5 P5 Drain pump error PA Forced compressor s...

Page 34: ...f the connector CNDC on the outdoor power circuit board V the noise filter Y Refer to 11 9 4 Check connection of reactor DCL or ACL HRP71 100VHA Check connection of L1 and L2 on the active filter module ACTM Refer to 11 9 HRP71 100VHA2 Check connection of DCL1 and DCL2 on the outdoor power circuit board Refer to 11 9 5 a Check connection of outdoor noise filter circuit board b Replace outdoor nois...

Page 35: ...ty of indoor outdoor unit connecting wire of indoor and outdoor units 2 Check diameter and length of indoor outdoor unit connecting wire Total wiring length 80m including wiring connecting each indoor unit and between indoor and outdoor unit Also check if the connection order of flat cable is S1 S2 S3 3 Check the number of indoor units that are connected to one outdoor unit If EA is detected 4 6 T...

Page 36: ...on Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting 1 Disconnection or contact failure of connector TH4 on the outdoor controller circuit board 2 Defective thermistor 3 Defective outdoor controller circuit board 1 Check connection of connector TH4 on the outdoor controller circuit board Check breaking of the lead wire for thermis...

Page 37: ...ol Refer to 11 10 3 Replace outdoor controller circuit board WEmergency operation is available in case of abnormalities of TH3 TH32 TH33 TH6 and TH7 Refer to 11 8 1 Disconnection or contact failure of connectors Outdoor controller circuit board TH3 TH32 TH33 TH7 6 Outdoor power circuit board CN3 2 Defective thermistor 3 Defective outdoor controller circuit board U6 4250 Power module Check abnormal...

Page 38: ...efer to 11 9 Outdoor power circuit board 3 Replace noise filter circuit board HRP71 100VHA 4 Check CN52C wiring 5 Replace ACT module HRP71 100VHA 6 Replace outdoor power circuit board HRP71 100V 7 Check CNAF wiring HRP71 100VHA 8 Check CN5 wiring on the outdoor power circuit board Refer to 11 9 9 Replace outdoor power circuit board HRP100 125Y 0 Check CN2 wiring on the outdoor power circuit board ...

Page 39: ...tact failure at transmission wire of remote controller 2 All remote controllers are set as sub remote controller In this case E0 is displayed on remote controller and E4 is displayed at LED LED1 LED2 on the outdoor controller circuit board 3 Miswiring of remote controller 4 Defective transmitting receiving circuit of remote controller 5 Defective transmitting receiving circuit of indoor controller...

Page 40: ...tween outdoor controller circuit board CNMNT and M NET board CN5 2 Check disconnection looseness or breaking of connection wire between outdoor controller circuit board CNMNT and M NET board CND 3 Check M NET transmission wiring method E8 6840 Indoor outdoor unit communication error Signal receiving error Outdoor unit Abnormal if outdoor controller circuit board could not receive anything normally...

Page 41: ... Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range Indoor pipe temperature TH2 or TH5 room temperature TH1 3 TH Lower temperature between liquid p...

Page 42: ...y because of noise or etc Note The address and attribute displayed at remote controller indicate the controller that detected abnormality 1 Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmission wire continuously 2 Transmission quantity has increased and transmission of signal is not possible because there was wiring mistak...

Page 43: ...rmality generated 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 there were some trouble of 1 5 above repair the defect then turn off the power supply of outdoor unit indoor unit and FRE...

Page 44: ...y of same refrigerant system with LOSSNAY is turned off or within 2 minutes of restart abnormality is detected 3 Contact failure of transmission wire of indoor unit of LOSSNAY 4 Disconnection of transmission connector CN2M of indoor unit 5 Defective transmitting receiving circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is nonexistent 1 The unit of former address does not exis...

Page 45: ...r Check LED3 on 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 11 10 Check protection device connector 63L and 63H for contact failure Refer to 11 9 Error Code Abn...

Page 46: ...tely when turning off by the remote controller 12 Normal operation For protection of compressor 12 Normal operation 4 Even controlling by the wireless remote controller no beep is heard and the unit does not start operating Operation display is indicated on wireless remote controller 1 The pair number settings of the wireless remote controller and indoor controller board are mismatched 1 Check the...

Page 47: ... after turning on the main power Normal The start up 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 may n...

Page 48: ...board are blown Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses are blown The fuses on the outdoor controller circuit board will be blown when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Check if miswiring breaking or poor contact is causing this problem I...

Page 49: ...door 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 outdoor...

Page 50: ...tact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between DC 10V and DC16V the indoor controller board must be defective The remote controller wire short circuits Check if the remote controller wire is short circuited Defective indoor controller board Replace the indoor controller board Diagnosis flow Cause Inspection ...

Page 51: ...ear FILTER from the display See the operation manual that came with the product for how to clean the filters STANDBY is displayed on the screen This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes later W...

Page 52: ...unit is controlling the airflow amount in order to keep the optimum operating condition A sound similar to water flowing is heard from the unit 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 remote controller in HEAT operation The up down vane will be automatically set to horizontal b...

Page 53: ...e airflow direction does not change Up down vane left right louver 1 Check if the vane is set to a fixed position Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner does not have that function NOT AVAILABLE will be displayed on the remote controller when AIR DIRECTION or LOUVER button is pressed Someth...

Page 54: ...ps down Heating water drips down from the heat exchanger Make use of optional parts Drain Socket and Drain pan if these water needs to be recovered 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 un...

Page 55: ...ve LEV A LEV B LEV C Normal Abnormal Open or short Disconnect the connector then measure the resistance with a tester Winding temperature 20 Normal Gray Black Gray Red Gray Yellow Gray Orange Abnormal 46 3 Open or short Measure the resistance between the terminals with a tester At the ambient temperature 20 Solenoid valve coil Bypass valve SV Refer to next page Fan motor MF1 MF2 HRP100 125Y HRP71 ...

Page 56: ...nector CNF1 2 Measure the voltage in the outdoor controller circuit board TEST POINT VDC between 1 and 4 of the fan connector VDC DC280 380V TEST POINT VCC between 5 and 4 of the fan connector VCC DC15V Recover wiring Replace outdoor controller board Replace the fan motor Replace outdoor controller board C B and fan motor MF1 2 Replace outdoor controller board Replace the fan motor Is the voltage ...

Page 57: ... 1 Thermistor R50 17k 2 B constant 4150 3 Rt 17exp 4150 273 t 323 1 1 Thermistor R120 7 465k 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 Medium temperature thermistor Thermistor Heatsink TH8 WHRP71 100VHA only 20 250k 30 160k 40 104k 50 70k 60 48k 70 34k 80 24k 90 17 5k 100 13 0k 110 9 8k High temperature thermistor Thermistor Discharge TH4 0 10 20 30 40 50 20 10 0 10 20 30 40 50 Temperatur...

Page 58: ...ocked 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 3 4 5 6 Connector LEV A DC12V Outdoor controller board Drive circuit 3 2 ...

Page 59: ...pipes can bend due to pressure 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 stopper 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 attached ...

Page 60: ...hours Neglecting this could result in freezing the heat exchanger in indoor unit 3 Emergency operation procedure 1 Turn the main power supply off 2 Turn on the emergency operation switch SWE on indoor controller board 3 Set the shorting pins of emergency operation connector CN31 on outdoor controller board to ON 4 Use SW4 2 on outdoor controller board to set the operation mode cooling or heating S...

Page 61: ... 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 emegency operation with the values listed above 2 If one thermistor is set to open short the values for each will be different from the list above 3 Only for VHA2 YHA2 Example When pipe temperature the...

Page 62: ...Outdoor power circuit board for HRP71 100V Noise filter circuit board for HRP100 125Y 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 DC 0V when stopped DC 1 6 5V when operated SW7 Demand control setting CN51 External signal output Compressor operat ing signal Abnormal signal LEV A B C Linear expansion valve SWP Pump down SW8 Pipe...

Page 63: ...circuit board for HRP100 125Y 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 DC 0V when stopped DC 1 6 5V when operated SW7 Demand control setting CN51 External signal output Compressor operat ing signal Abnormal signal LEV A B C Linear expansion valve SWP Pump down SW8 Pipe replace Wiring replace CNM Connect to A control service...

Page 64: ...cuit board CN5 LO NO Voltage of 220 240V AC is output Connect to the outdoor power circuit board TABS TABT Outdoor noise filter circuit board PUHZ HRP71VHA PUHZ HRP100VHA CN52C 52C driving signal Connect to the outdoor controller circuit board CN52C E2 Connect to the earth LI NI Voltage of 220 240V AC is input Connect to the terminal block TB1 RS1 OCH425D ...

Page 65: ...CNAC1 CNAC2 AC220 230 240V Connect to 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 AC380 400 415V 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 GD3 Connect to the earth NO Connect to the o...

Page 66: ... to the outdoor controller circuit board TABS TABT Connect to the outdoor noise filter circuit board Voltage among phases 220 240V AC Brief Check of POWER MODULE W Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc If they are short circuited it means that they are broken 1 Check of diode bridge TABP1 TABS TABN1 TAB...

Page 67: ...tor CB U V W Connect to the compres sor MC Voltage among phases 10 V 180 V AC CNDC 280 380 V DC 1 3 Connect to the outdoor controller circuit board CNDC E2 E3 Connect to the earth CN52C 52C driving signal Connect to the outdoor controller circuit board CN52C 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 s...

Page 68: ...cuit board CN4 Note The marks L1 L2 L3 N1 N2 P1 P2 U V and W shown in the diagram are not actually printed on the board W N2 N1 P2 P1 L1 L2 L3 W W TAB connecter on X52A Connect to the RS resistor POWER MODULE TB C1 Connect to the smoothing capacitor CB1 CB2 TB P2 Connect to the smoothing capacitor CB1 TB U TB V TB W Connect to the compressor MC Voltage among phases 10V 400V AC TB L1 TB L2 TB L3 Co...

Page 69: ...PUHZ HRP125YHA2R1 L1 A2 L2 A2 L3 A2 Connect to the ACL1 ACL2 ACL3 CN7 Connect to the outdoor power circuit board CN7 CK OU Connect to the CK capacitor L1 IN N IN Connect to the noise filter circuit board LO1 No L1 A1 Connect to the ACL1 L1 OU L2 OU L3 OU Connect to the outdoor power circuit board TB L1 L2 L3 OCH425D ...

Page 70: ...s not operate can not be switched ON and L2 short 100k 1M 1 The breaker operates open W1 1 The unit does not operate can not be switched ON 2U9 Abnormal stop W2 P and L2 short 100k 1M 1 The breaker operates open W1 1 The unit does not operate can not be switched ON 2U9 Abnormal stop W2 P and Io short 100k 1M 1 The breaker operates open W1 1 The unit does not operate can not be switched ON 2U9 Abno...

Page 71: ... of switch Dip switch Push switch SW1 1 2 No Function Effective timing Action by the switch operation Forced defrost 1 Start Normal When compressor is working in heating operation 1 Abnormal history clear Refrigerant address setting When power supply ON Clear Normal off or operating SWP 6 5 4 3 Under suspension Pump down Start Normal SW4 SW8 1 2 1 2 3 Test run Operating OFF Under suspension Test r...

Page 72: ... Always Setting of demand control 3 1 2 SW7 1 SW7 2 OFF 0 Operation stop 75 50 OFF ON OFF OFF ON Power consumption Demand switch ON Model select Following SW5 6 reference SW9 3 SW9 4 OFF 3 C Initial setting 3 C 0 C OFF ON OFF OFF ON Ambient temp 6 C ON ON 2 Function of connector w2 Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is set to ON Au...

Page 73: ...Low level sound priority mode Turn SW1 to off to release Low level sound priority mode and normal operation b On demand control Local wiring Demand control is available by external input In this mode power consumption is decreased within the range of usual 0 100 How to wire Basically the wiring is same with a Connect an SW 1 which is procured locally between Orange and Red 1 and 3 of the adapter f...

Page 74: ...nsmitting 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 1 Error code displ...

Page 75: ...ard and connector CN3 on outdoor power board are not disconnected Measure resistance value of outdoor thermistors Abnormality of heatsink temperature Check if indoor outdoor units have a short cycle on their air ducts Measure resistance value of outdoor thermistor TH8 Check the outdoor fan motor Check if connector TH3 63HS on outdoor controller board is disconnected Abnormality of voltage Check lo...

Page 76: ...the display blinks Inspection code is displayed when compressor stops due to the work of protection devices Display Contents to be inspected When power is turned on F3 F5 F9 E8 E9 EA Eb EC E0 E7 63L connector red is open 63H connector yellow is open 2 connectors 63H 63L are open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting e...

Page 77: ...t tens digit and ones digit are displayed by turns Example When 2450 hours 245 10 hours 0 5 secs 0 5secs 2 secs 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Compressor operating current 0 50 LEV A opening pulse 0 480 0 50 w Value after the decimal point will be truncated 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 150 pulse 0 5 se...

Page 78: ...f error unit number and code 3 217 When the temperature is 100 or more the hundreds digit tens digit and ones digit are displayed by turns Example When 130 0 5 secs 0 5secs 2 secs A Code display Code display 0 20 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 Thermo ON time 0 999 Test run elapsed time 0 120 0 999 When it is 100 ...

Page 79: ...s 0 H P 1 Cooling only 0 Single phase 2 3 phase Setting details Defrosting switch Display details 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 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 88 39 88 When the temperature is 0 or less and temperature are displayed by turns 39 88 When the temperature is ...

Page 80: ... 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 SW2 setting 1 ON 2 3 4 5 6 Display detail Explanation for display Unit 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Indoor setting temperature 17 30 Outdoor pipe temperature Cond Eva TH6 V YHA 39 88 Pressure saturation temperature T63HS V YHA2 39 88 Outdoor heatsink temperature TH8 40 200 17 30 39 88 When the temperature is 0 or less and temperat...

Page 81: ...play of abnormal unit number and code When no error history 0 and are displayed by turns 3 Outdoor pipe temperature Liquid TH3 TH32 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor outside 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 on erro...

Page 82: ...rature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs Outdoor pipe temperature Cond Eva TH6 on error occurring 39 88 39 88 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs Outdoor outside temperature TH7 on error occurring 39 88 39 88 When the temperature is 0 C or less and temperat...

Page 83: ...lacement operation is conducted even once 1 is displayed If replacement operation time is less than 2 hrs 0 is displayed 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 Minute 1 Conducted 0 Not yet 15 1 15 4 1 ON 2 3 4 5 6 Normal Overvoltage error Undervoltage error Input current sensor error L1 phase open error Abnormal power synchronous signal ACTM error HRP71 100V Und...

Page 84: ... Preventive control for excessive temp erature rise of discharge temperature Preventive control for excessive temp erature rise of condensing temperature Frosting preventing control Preventive control for excessive temp erature rise of radiator panel Example The following controls are activated Primary current control Preventive control for excessive tempe rature rise of condensing temperature Pre...

Page 85: ...refrigerant system 12 1 UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller The setting of function for each unit can only be done by the remote controller Select function available from the table 1 Table 1 Function selections 1 Functions are available when setting the unit number to 00 Select 00 referring to 4 setting the indo...

Page 86: ...unctions for an indoor unit in an independent system set the unit number to 01 referring to 4 Set the indoor unit number of Operating Procedure When setting functions for a simultaneous twin indoor unit system set the unit number to 01 to 02 for each indoor unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number of Operating Procedure When setting ...

Page 87: ...ing Press Specified indoor unit FAN operation Change refrigerant address or unit No Switch to function setting mode Press and at the same time with the remote controller stopped 12 1 1 Selecting functions using the wired remote controller 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...

Page 88: ...rror may have occurred Check to see if there are any sources of noise or interference near the transmission path If you wish to continue to select other functions repeat steps to Complete function selection Hold down the mode is 15 to 28 and buttons simultaneously for at least 2 seconds FILTER After a while the function selection screen will disappear and the air condi tioner OFF screen will reapp...

Page 89: ...nks Press the temp button once to set 50 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 If a unit number that cannot be reco...

Page 90: ... setting value The automatic mode is displayed when the operation mode is selected 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 Main The controller will be the main controller Sub The controller will be the sub controller 2 Use of clock setting To switch the ...

Page 91: ...ed when the operation mode is selected Initial setting value The automatic mode is not displayed when the operation mode is selected The temperature range limit is 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...

Page 92: ...d to select the desired refrigerant address Screen 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 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 ev...

Page 93: ... Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 2 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 3 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 4 Heat mode 4 deg correction 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...

Page 94: ...it Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 Refer to13 2 1 DetailContentsinRequestCode Refer to13 2 1 DetailContentsinRequestCode Refer to13 2 1 DetailContentsinRequestCode Refer to13 2 1 DetailContentsinRequestCode 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displays...

Page 95: ...isplay TH3 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 Outdoorunit Liquidpipe1temperature TH3 attimeoferror Outdoor unit Liquid pipe 2 temperature at time of error Outdoor unit 2 phase pipe temperature TH6 ...

Page 96: ...me 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 Model setting information Indoor unit Capacity setting information Indoor unit SW3 information Wireless pair No indoor control board side setting Indoor unit SW5 information Indoor unit Microprocessor version information Indoor unit Microprocessor version in...

Page 97: ...isplay area C 4 Relay output state Operation mode Indoor unit Control state Request code 50 Data display Operation mode Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Relay output state Display Power currently Compressor Four way valve Solenoid valve supplied to compressor Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Display State 0 Normal 1 Preparing for heat ope...

Page 98: ...SV1 Four way valve Compressor 0 1 2 3 4 5 6 7 8 9 A b C d E F ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON Actuator output state Display 52C SV2 SS 0 1 2 3 4 5 6 7 ON ON ON ON ON ON ON ON ON ON ON ON Error content U9 Request code 55 Data display Error content Error content 0 0 Error content Detected Display Overvoltage Undervoltage L1 phase Power ...

Page 99: ...ay Request code 70 Data display Capacity 10 50 9 35 11 60 14 71 20 100 25 125 28 140 40 200 50 250 Outdoor unit Setting information Request code 71 Data display Setting information Setting information 0 0 Setting information Display Defrost mode 0 Standard 1 For high humidity Setting information Display Single Heat pump 3 phase cooling only 0 Single phase Heat pump 1 Cooling only 2 3 phase Heat pu...

Page 100: ... 1 1 1 0 0 1 1 1 0 1 0 1 1 1 1 1 0 1 1 1 0 0 1 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 Outdoor unit switch setting display SW1 to SW10 except SW3 Request codes 73 to 82 0 Switch OFF 1 Switch ON Data display SW5 1 2 3 4 0 0 0 0 00 00 1 0 0 0 00 01 0 1 0 0 00 02 1 1 0 0 00 03 0 0 1 0 00 04 1 0 1 0 00 05 0 1 1 0 00 06 1 1 1 0 00 07 0 0 0 1 00 08 1 0 0 1 00 09 0 1 0 1 00 0A 1 1 0 1 00 0b 0 0 1 1 00 ...

Page 101: ...3 140BA2 12 MEXZ GA VA L 32 13 33 14 34 15 35 16 36 17 37 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F Indoor unit Capacity setting information Request code 163 Data display 0 0 See the table on the right Display Capacity setting state Display Capacity setting state 00 12 10 112 01 16 11 125 02 22 12 140 03 25 13 04 28 14 05 32 15 06 35 36 16 07 40 17 08 45 18 09 50 19 0A 56 1A 0b 63 1b 0C 71 1...

Page 102: ...t to check the data with the air conditioner stopped skip to step 4 L 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 3 Press the FILTER button to confirm the setting Display Waiting for stabilization HEAT STABL...

Page 103: ...ure 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 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 Outdoor unit Remote cont...

Page 104: ...r temperature 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 heat mode outdoor intake ...

Page 105: ...before enabling this setting Display GAS LEAK TEST START GAS LEAK JUDGE Refrigerant leakage detection judgement Refrigerant leakage detection initial teaching 1 How to select the Refrigerant Leakage Detection mode Detection is possible regardless the unit s operation ON or OFF Press button for more than 3 seconds to switch to EASY MAINTENANCE mode Display 2 How to start the initial learning Press ...

Page 106: ...nt leakage mode How to reset the initial condition data When the unit is removed and installed again or refrigerant is charged additionally the Initial learning must be performed again by following procedure 1 Turn Main Power OFF 2 Connect the pin of CN31 to ON position on the outdoor controller board 3 Turn SW4 1 on the outdoor controller board to ON 4 Turn Main Power ON to reset the initial data...

Page 107: ...oto 2 3 Removing the electrical parts box 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the indoor outdoor connecting wire and power supply wire from terminal block 4 Disconnect all connectors from controller circuit board 5 Remove the terminal cover and disconnect the compressor lead wire 6 Remove 1 electrical parts box fixing screw 4 10 and detach the e...

Page 108: ...en clamps for the lead wire in the rear of the electri cal parts box and the separator See Photo 4 4 Pull out the thermistor Discharge TH4 from the sensor holder Photo 7 6 Removing the thermistor Outdoor pipe TH3 TH32 TH33 1 Remove the service panel See Figure 1 2 Disconnect the connectors TH3 white and TH32 black TH33 yellow on the controller circuit board in the electri cal parts box 3 Loosen cl...

Page 109: ...anel fixing screws 5 12 in the rear of the unit then remove the right side panel 5 Remove the linear expansion valve coil 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the linear expansion valve cover it with a w...

Page 110: ...ixing screws 4 10 and remove the capacitor w The reactor and capacitor are attached to the rear of the electrical parts box Capacitor band fixing screws Photo 11 Reactor fixing screws Reactor fixing screws Reactor DCL Electrical parts box Capacitor CB Photo 10 Bypass valve Thermistor Outdoor pipe TH33 Bypass valve coil SV Bypass valve coil fixing screw Replace filter 13 Removing the pressure senso...

Page 111: ...nch 13 Remove the welded pipe of compressor inlet and outlet then remove the compressor Note Recover refrigerant without spreading it in the air 15 Removing the power receiver 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 12 and remo...

Page 112: ...or See Photo 2 Photo 3 3 Removing the electrical parts box 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the indoor outdoor connecting wire and power supply wire from terminal block 4 Disconnect the connectors on the controller circuit board 5 Remove the terminal cover and disconnect the compressor lead wire 6 Remove 2 electrical parts box fixing screws 4...

Page 113: ... screw 4 and 5 that fix the bottom side of the electrical parts box and remove the bottom side plate by sliding in the direction of the arrow B See Photo 6 and 7 6 Remove the 2 screws screw 6 and 7 that fix the plate equipped with the noise filter circuit board and converter circuit board See Photo 8 Note When reassembling the electrical parts box make sure the wirings are correct Photo 4 Electric...

Page 114: ...ler circuit board in the electrical parts box 4 Loosen the wire clamps bottom of the electrical parts box and separator 5 Pull out the thermistor Discharge TH4 from the sensor holder Photo 12 7 Removing the thermistor Outdoor pipe TH3 TH32 TH33 1 Remove the service panel See Figure 1 2 Disconnect the connectors TH3 white and TH32 black TH33 yellow on the controller circuit board in the electrical ...

Page 115: ...t side panel fixing screws 5 12 in the rear of the unit then remove the right side panel 5 Remove the linear expansion valve coil 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the linear expansion valve cover it w...

Page 116: ...Thermistor Outdoor pipe TH33 Bypass valve coil SV Bypass valve coil fixing screw Replace filter 13 Removing the pressure sensor 63HS HRP100 125YHA2 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Pull out the lead wire of pressure sensor 4 Recover refrigerant 5 Remove the welded part of pressure sensor Note 1 Recover refrigerant without spreading it in the air Note 2 ...

Page 117: ...r and tilt the separator to the side of the fan motor slightly See Photo 16 5 Disconnect the lead wires from the reactor and remove the 4 screws screw 0 that fix the reactor to remove the reactor See photo 17 and 18 Note 1 The reactor is very heavy 4kg Be careful when handling it Note 2 The reactor box is also removable OPERATING PROCEDURE PHOTOS Photo 16 Electrical parts box Screw8 Valve bed Scre...

Page 118: ... fixing screws 4 10 and 4 ball valve and stop valve fixing screws 5 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 12 in the rear of the unit then remove the right side panel 8 Remove 3 separator fixing screws 4 10 and remove the separator 9 Remove the soundproof cover for compressor 10 Remove the terminal cover and remove the compressor lead wire 11 Recover refrigerant 1...

Page 119: ...Related Links Model Number PUHZ HRP100YHA PUHZ HRP71 125_Installation_Manual_ RG79D355H03 PUHZ HRP71 125_Service_Manual_ OCH425D PUHZ_HRP71 125_Parts_Catalog_ OCB425C ...

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Mitsubishi Electric PUHZ-HRP100VHA, Service Manual

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