Mitsubishi PUHZ Technical & Service Manual Download Page 73 | Manualshive

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73

OPERATING PROCEDURE

PHOTOS

5. Removing the thermistor <Outdoor> (TH7)

(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the connector TH7 (red) on the controller circuit

board in the electrical parts box.

(4) Loosen the clamp for the lead wire in the rear of the

electrical parts box. (See photo 4.)

(5) Pull out the thermistor <Outdoor> (TH7) from the sensor

holder.

Note: In case of replacing thermistor <Outdoor> (TH7), replace

it together with thermistor <Outdoor 2-phase pipe> (TH6),
since they are combined together. Refer to No.4 above

to remove thermistor <Outdoor 2-phase pipe>.

Photo 7

Photo 9

6. Removing the thermistor <Discharge> (TH4)

(1) Remove the service panel. (See photo 2.)
(2) Remove the top panel. (See photo 1.)
(3) Remove the front panel. (See photo 1.)
(4) Remove the back panel. (See photo 1.)
(5) Remove the electrical parts box. (See photo 5.)
(6) Pull out the thermistor <Discharge> (TH4) from the sensor

holder. (See photo 8.)

w

When attaching the thermistor <Discharge> (TH4), place it
to its original position.

7. Removing the solenoid valve coil <Four-way valve> (21S4)

and linear expansion valve coil (LEV (A), LEV (B))

(1) Remove the service panel. (See photo 2.)
(2) Remove the top panel. (See photo 1.)
(3) Remove the front panel. (See photo 1.)
(4) Remove the back panel. (See photo 1.)
(5) Remove the electrical parts box. (See photo 5.)

[Removing the solenoid valve coil <Four-way valve> (21S4)]
(6) Remove 1 solenoid valve coil <Four-way valve> fixing

screw (M4

✕

6).

(7) Remove the solenoid valve coil <Four-way valve> by

sliding the coil to the right.

[Removing the linear expansion valve coil (LEV (A), LEV (B)) ]
(6) Remove the linear expansion valve coil by sliding the coil

upward.

Thermistor <Outdoor>
(TH7)

Sensor holder

Electrical parts box

Photo 8

Thermistor <Discharge>
(TH4)

solenoid valve coil
<Four-way valve>
fixing screw

Four-way
valve

Linear expansion
valve coil (LEV B)

Linear expansion
valve coil (LEV A)

solenoid valve coil
<Four-way valve>
(21S4)

Linear expansion valve

OC294-C-3.qxp 04.10.7 5:14 PM Page 73

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Summary of Contents for PUHZ

Page 1: ...OCEDURE 71 13 PARTS LIST 91 14 OPTIONAL PARTS Back Cover No OC294 REVISED EDITION C R410A 2004 Outdoor unit model names PUHZ RP1 6VHA PUHZ RP2VHA PUHZ RP2 5VHA PUHZ RP3VHA PUHZ RP4VHA PUHZ RP5VHA PUHZ RP6VHA Service Ref PUHZ RP1 6VHA PUHZ RP2VHA PUHZ RP2 5VHA PUHZ RP2 5VHA1 PUHZ RP3VHA PUHZ RP3VHA1 PUHZ RP4VHA PUHZ RP4VHA1 PUHZ RP5VHA PUHZ RP5VHA1 PUHZ RP6VHA PUHZ RP6VHA1 Revision PUHZ RP2 5VHA1 P...

Page 2: ...ructural improvement Power Receiver Separator Rubber Mount for a Compressor Thermistor 2 phase pipe Outdoor temperature Thermistor Discharge Linear Expansion Valve Coil 5 Reduced Refrigerant Amount The Charged Refrigerant Amount has been reduced from 5 5kg to 5 0kg 6 Wider Operation Range A change is made on the Minimum Capacity For details please refer to the Service Manual for indoor units PUHZ ...

Page 3: ... for use with R410A refrigerant The following tools are necessary to use R410A refrigerant Keep the tools with care If dirt dust or moisture enter into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Flare tool ...

Page 4: ...ide pressure of 5 3MPa G or over 2 Charge hose Only for R410A Use pressure performance of 5 09MPa G or over 3 Electronic scale 4 Gas leak detector Use the detector for R134a R407C or R410A 5 Adaptor for reverse flow check Attach on vacuum pump 6 Refrigerant charge base 7 Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon 8 Refrigerant recovery equipment OC294 C 1 qxp 04 ...

Page 5: ...easure 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 the unit is RP1 6 2 2 5 ro 3 which utilizes AB oil In case the unit is RP4 5 or 6 which utilize ester oil Perform cooling operation for about 30 minutes and then do a pump dow...

Page 6: ...lare nut dimensions Outside diameter Dimension B mm R410A w w36 0mm for indoor unit of RP4 5 and 6 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 vacuum gauge and vacuum valve ...

Page 7: ...ystem improves the quality and reliability of the work done It also helps to speed up the installation time PUHZ RP2 5VHA PUHZ RP2 5VHA1 PUHZ RP3VHA PUHZ RP3VHA1 PUHZ RP4VHA PUHZ RP4VHA1 PUHZ RP5VHA PUHZ RP5VHA1 PUHZ RP6VHA PUHZ RP6VHA1 Heat pump type Outdoor unit PUHZ RP PEAD RP EA UK PEAD RP EA1 UK PLA RP AA UK PLA RP AA1 UK PEAD RP GA UK PLA RP AA PLA RP AA1 OC293 REVISED EDITION B OC297 REVISE...

Page 8: ... way 5m 16ft 3 Guaranteed voltage 198 264V 50Hz 4 Above data based on indicated voltage Indoor Unit 1 phase 230V 50Hz Outdoor Unit 1 phase 230V 50Hz 5 Refer to the service manual of indoor unit for tha indoor unit s specifications 2 Guaranteed operating range Upper limit Lower limit Upper limit Lower limit Indoor D B 35 C W B 22 5 C D B 19 C W B 15 C D B 28 C D B 17 C Outdoor D B 46 C D B 5 C D B ...

Page 9: ...tdoor Unit 1 phase 230V 50Hz 5 Refer to the service manual of indoor unit for tha indoor unit s specifications 2 Guaranteed operating range Upper limit Lower limit Upper limit Lower limit Indoor D B 35 C W B 22 5 C D B 19 C W B 15 C D B 28 C D B 17 C Outdoor D B 46 C D B 5 C D B 21 C W B 15 C D B 11 C W B 12 C Cooling Heating Service Ref PUHZ RP4VHA PUHZ RP4VHA1 PUHZ RP3VHA PUHZ RP3VHA1 PUHZ RP2 5...

Page 10: ...en the indoor outdoor unit Function Cooling Heating W D H Liquid Gas Indoor side Outdoor side Height difference Piping length Notes1 Rating Conditions ISO T1 Cooling Indoor D B 27 C 80 F W B 19 C 66 F Outdoor D B 35 C 95 F W B 24 C 75 F Heating Indoor D B 20 C 68 F Outdoor D B 7 C 45 F W B 6 C 43 F Refrigerant piping length one way 5m 16ft 3 Guaranteed voltage 198 264V 50Hz 4 Above data based on i...

Page 11: ... 8 6 8 75m 7 9 7 9 7 9 7 4 7 4 7 4 2 5 2 5 3 5 3 5 5 5 5 5 5 5 5 0 5 0 5 0 Service Ref PUHZ RP4VHA PUHZ RP5VHA PUHZ RP1 6VHA PUHZ RP2VHA PUHZ RP2 5VHA PUHZ RP2 5VHA1 PUHZ RP3VHA PUHZ RP3VHA1 PUHZ RP6VHA PUHZ RP4VHA1 PUHZ RP5VHA1 PUHZ RP6VHA1 U V U W W V Unit Compressor model Winding Resistance ANV33FDAMT at 20 C 0 266 0 266 0 266 SNB130FLBH 0 300 0 340 0 300 0 340 0 300 0 340 PUHZ RP4 5 6VHA PUHZ ...

Page 12: ...REQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUHZ RP4VHA PUHZ RP4VHA1 COOLING MODE HEATING 49 SPL dB 51 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 µbar BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUHZ RP5VHA PUHZ RP5VHA1 PUHZ RP6VHA PUHZ RP6VHA1 COOL...

Page 13: ...hole M10 foundation bolt 33 drain hole 33 drain hole 43 6 152 155 400 347 5 45 4 365 330 300 40 Handle for moving 600 10 300 150 287 5 Installation bolt pitch 500 800 69 3 5 4 3 183 90 155 23 32 5 18 1 FOUNDATION BOLTS 2 PIPING WIRING DIRECTION Piping and wiring connection can be made from the rear direction only 3 ATTACHING THE CONDUIT In order to attach the conduit it is necessary to fix the met...

Page 14: ...14 Unit mm PUHZ RP2 5VHA PUHZ RP2 5VHA1 PUHZ RP3VHA PUHZ RP3VHA1 O v e r 1 0 m m F R E E O v e r 5 0 0 m m O v e r 1 0 0 m m O v e r 1 0 m m OC294 C 1 qxp 04 10 7 5 11 PM Page 14 ...

Page 15: ...15 PUHZ RP4VHA PUHZ RP4VHA1 PUHZ RP5VHA PUHZ RP5VHA1 PUHZ RP6VHA PUHZ RP6VHA1 Unit mm O v e r 1 0 m m F R E E O v e r 1 0 0 0 m m O v e r 1 5 0 m m O v e r 1 0 m m OC294 C 1 qxp 04 10 7 5 11 PM Page 15 ...

Page 16: ...HZ RP2 5VHA PUHZ RP2 5VHA1 PUHZ RP3VHA PUHZ RP3VHA1 MODELS SW6 W1 MODEL SELECT 1 6V 2V MODELS SW6 2 5V 3V 1 ON OFF 2 3 4 5 6 1 ON OFF 2 3 4 5 6 1 ON OFF 2 3 4 5 6 1 ON OFF 2 3 4 5 6 W1 W2 W2 Only PUHZ RP2 5 3VHA OC294 C 1 qxp 04 10 7 5 11 PM Page 16 ...

Page 17: ... PUHZ RP5VHA PUHZ RP5VHA1 PUHZ RP6VHA PUHZ RP6VHA1 W1 MODELS SW6 W1 MODEL SELECT 4V 5V 6V 1 ON OFF 2 3 4 5 6 1 ON OFF 2 3 4 5 6 1 ON OFF 2 3 4 5 6 Only PUHZ RP4VHA1 PUHZ RP5VHA1 PUHZ RP6VHA1 OC294 C 1 qxp 04 10 7 5 11 PM Page 17 ...

Page 18: ...han design 245 IEC or 227 IEC The cable length may vary depending on the condition of installation humidity or materials etc Cross section of cable Round 2 5 2 5 1 5 2 5 3 3 4 4 50 1 45 3 60 4 Not applicable 2 Flat Flat Round Wire size mm2 Number of wires Clockwise S1 S2 S3 Clockwise S1 S2 S3 Open Connect S1 and S3 to the opposite angle Not applicable Because center wire has no cover finish From l...

Page 19: ...3H Bypass valve Oil separator Thermistor TH4 Discharge Muffler Strainer 50 4 way valve Compressor Ball valve Capillary tube O D 4 0OI D 2 4OL500 Capillary tube O D 2 5OI D 0 6OL1000 PUHZ RP1 6VHA PUHZ RP2VHA Thermistor TH7 Outdoor Heat exchanger Refrigerant GAS pipe connection 1 2F Refrigerant LIQUID pipe connection 1 4F Stop valve Strainer 100 Power receiver Linear expansion valve B Thermistor TH...

Page 20: ...0 Strainer 100 Low pressure switch 63L Muffler Ball valve Restrictor valve Solenoid valve Bypass valve PUHZ RP4VHA1 PUHZ RP5VHA1 PUHZ RP6VHA1 Distributor Thermistor TH7 Outdoor Heat exchanger Refrigerant GAS pipe connection 5 8F Refrigerant LIQUID pipe connection 3 8F Stop valve with service port Strainer 100 Power receiver Linear expansion valve B Linear expansion valve A Strainer 100 Strainer 10...

Page 21: ... pipe length Additional refrigerant charging amount for pipe length exceeding 30 m kg PUHZ RP1 6 2VHA PUHZ RP2 5 3VHA 2 5 3VHA1 PUHZ RP4 6VHA RP4 6VHA1 Outdoor unit Number of bends Height difference 50m or less 50m or less 75m or less Permitted pipe length 50m or less 50m or less 75m or less 75m or less 2 1 3 1 5 1 4 6 11 20m 21 30m 2 3 3 3 5 3 4 8 2 5 3 5 5 5 5 0 31 40m 2 7 0 2 4 1 0 6 6 1 0 6 5 ...

Page 22: ...acity correction Cooling and heating capacity is lowered according to pipe length Capacity can be obtained by referring to the capacity curves below When the diameter of gas pipe is one size smaller than standard diameter cooling capacity is lowered com paring to the standard diameter The lowered capacity can be obtained by referring to capacity curves for gas pipe which is one size smaller than s...

Page 23: ...oling RP3 Cooling RP2 5 4 4 When gas pipe is one size larger than standard size for PUHZ RP4 5 and 6 1 Capacity can be obtained by referring to capacity curves of standard size 3 3 Capacity curve for PUHZ RP2 5 3 models When gas pipe is one size smaller than standard size OC294 C 1 qxp 04 10 7 5 11 PM Page 23 ...

Page 24: ...ot be performed 3During replacement operation C5 is displayed on A Control Service Tool PAC SK52ST This is applied to only RP4 RP5 and RP6 models Replacement operation procedures 1Turn on the power supply 2Set DIP switch SW8 2 on the control board of the outdoor unit to ON to start replacement operation The replacement operation is performed using the cooling system Cool air will flow from the ind...

Page 25: ...oting by inferior phenomena The inferior phenomenon is not reoccurring Logged Not logged 1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor poor connection of wiring noise and etc Re check the symptom and check the installation environment refrigerant amount weather when the inferior phenomenon occurred matters related to wiring a...

Page 26: ...yed alternately every second If one of the above operations doesn t function correctly the causes written below should be considered Find causes from the symptoms The below symptoms are under test run mode startup in the table means the display status of w1 written above Remote Controller Display Symptoms in test run mode OUTDOOR BOARD LED Display Cause Remote controller displays H0 and cannot be ...

Page 27: ...d outdoor unit are communicating See the table below for details of the LED display LED 1 2 3 on the indoor controller board 11 2 2 Test run by outdoor unit SW4 The setting of test run ON OFF and its operation mode cooling heating can be set by SW4 on the controller board of out door unit Check that SW5 1 is set to OFF before performing test run If SW5 1 is set to ON turn it OFF and then perform t...

Page 28: ...he error code by the controller of the MELANS and in case of distant handy combined operation cancel the error code by cancelling distant operation Malfunction diagnosis method at maintenance service Digital control has memory function that memorizes latest error code even if it is cancelled by remote controller or power is shut off so error histories can be searched by following the procedure bel...

Page 29: ...y using this In case unit other than indoor unit such as outdoor unit and con troller of MELANS has an error all the indoor units of the same refrigerant system stop fan operation and outdoor units operate intermittently for 3 minutes 5 To delete error code When something is wrong with air conditioner error code P1 etc is memorized but error code can be deleted after termination of service To dele...

Page 30: ...code is output It takes 3 seconds at most for error code to appear The check mode is cancelled Inspected unit Error code P1 P2 P4 P5 P6 P8 P9 E4 E5 Beep output beep O 1 time beep O 2 times beep O 4 times beep O 5 times beep O 6 times beep O 8 times beep O 2 times Other than above Operation LED 1 sec O 1 time 1 sec O 2 times 1 sec O 4 times 1 sec O 5 times 1 sec O 6 times 1 sec O 8 times 1 sec O 2 ...

Page 31: ...r transmits the result of diagnosis to indoor or outdoor unit and receives no response When there might be other problems than diagnosed remote controller 3 There might be noise on transmission path or damage of other remote controllers or indoor units Check the trans mission path and other controllers If the transmission is not possible E3 blinks E3 will be displayed when remote controller transm...

Page 32: ...filter circuit board Refer to page 49 50 and 51 6 Replace outdoor power circuit board 7 Replace controller board When items above are checked but the units can not be repaired F3 5202 63L connector open Abnormal if 63L connector circuit is open for three minutes continuously after power supply 63L Low pressure switch PUHZ RP4 6VHA only 1 Disconnection or contact failure of 63L connector on outdoor...

Page 33: ...r units Abnormal if the number cannot be checked automatically due to mis wiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes 2 Abnormal if outdoor controller circuit board recognizes the number of connected indoor units as 4 units or more 1 Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units 2 Che...

Page 34: ... When F5 is displayed refer to Judgment and action for F5 7 Check linear expansion valve Refer to 11 6 8 Replace outdoor controller board Case U2 1102 Abnormal high discharging temperature 1 Abnormal if discharge temperature thermistor TH4 exceeds 125 or 110 continuously for 5 minutes Abnormal if condenser evaporator temperature thermistor TH5 exceeds 40 during defrosting and discharge temperature...

Page 35: ...stor TH4 2 Defective holder of discharge temperature thermistor 3 Disconnection or loose connection of linear expansion valve s coil 4 Disconnection or loose connection of linear expansion valve s connector 5 Defective linear expansion valve 12 Check the installation conditions of discharge temperature thermistor TH4 3 Check the coil of linear expansion valve Refer to page 46 4 Check the connectio...

Page 36: ...ut circuit of out door controller board 7 Defective compressor 1 Open stop valve 2 Check facility of power supply 3 Correct the wiring U V W phase to compressor Refer to page 52 and 53 4 Check indoor outdoor fan 5 Solve short cycle 6 Replace outdoor controller circuit board 7 Check compressor Refer to 11 6 W Before the replacement of the outdoor controller circuit board disconnect the wiring to co...

Page 37: ...board and M NET board is not available 1 Check disconnection looseness or breaking of connection wire between outdoor controller cir cuit board CNMNT and M NET board CN5 2 Check disconnection looseness or breaking of connection wire between outdoor controller cir cuit board CNMNT and M NET board CND 3 Refer to 4 in 2 2 M NET Wiring method on Service Technical Guide for OCT04 E0 No display Remote c...

Page 38: ...is not connected to terminal block for central control TB7 of outdoor unit 2 Check if transmission wore of indoor unit FRESH MASTER or LOSSNAY is not con nected to terminal block for transmission wire of outdoor unit 3 Check if terminal block for transmission wire TB3 and terminal block for central control TB7 is not connected 4 Check transmission wave form or noise on transmission wire M NET comm...

Page 39: ...nector CN2M of outdoor unit 3 Defective transmitting receiv ing circuit of outdoor unit or indoor unit Always try the followings when the error A7 occurs 1 Shut off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSS NAY at the same time for two minutes or more and put the power on again If mal function was accidental the unit returns to normal 2 Check address switch of abnor...

Page 40: ...nt sys tem with LOSSNAY is put off or within two minutes of restart abnormality is detect ed 3 Contact failure of transmission wire of indoor unit of LOSS NAY 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 nonexistent 1 The unit of former address does not exist as address swi...

Page 41: ...nking Check indoor outdoor connecting wire for mis wiring Converse wiring of S1 and S2 or break of S3 wiring 2 When LED3 is blinking Indoor outdoor connecting wire is nor mal 4Check LED display on outdoor controller circuit board Refer to page 56 and 57 Check protection device connector 63L and 63H for contact failure Refer to 11 9 Error Code Meaning of error code and detection method Case Judgmen...

Page 42: ...by the remote controller 12Normal operation For protection of compressor 12Normal operation 4 Even controlling by the wireless remote controller no beep is heard and the unit does not start operat ing Operation display is indicated on wireless remote controller 1The pair number settings of the wireless remote controller and indoor controller board are mis matched 1Check the pair number settings 5 ...

Page 43: ...easure the resistance between the terminals using a tester Surrounding temperature 20 Solenoid valve coil Four way valve 21S4 Pin number of relay connector is different from that motor connector Motor for compressor MC Linear expansion valve LEV A LEV B Normal Abnormal Open or short RP1 6 3V RP4 6V Open or short Measure the resistance between the terminals using a tester Surrounding temperature 20...

Page 44: ...7k 2 B constant 4150K 3 Rt 17exp 4150 273 t 323 1 1 Thermistor R120 7 465k 2 B constant 4057K 2 Rt 7 465exp 4057 273 t 393 1 1 Medium temperature thermistor Thermistor Heat sink TH8 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 Temperature Resistance k 200 150 100 50 0 25 ...

Page 45: ...eard than normal situation No noise is heard when the pulse number moves from B to A in case coil is burn out or motor is locked by open phase Noise can be detected by placing the ear against the screw dri ver handle while putting the screw driver to the linear expansion valve LEV M 1 6 4 4 3 2 1 2 1 Red Brown Blue Orange Yellow White 3 4 5 6 Connector LEV A LEV B DC12V Outdoor controller board Dr...

Page 46: ... 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 stop per to pipe B At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stop per is not firmly attached to pip...

Page 47: ...r 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 4Do 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 indoor unit 5Do not perform emergency cooling operation for more than 10 hours N...

Page 48: ...power circuit board CN4 CN52C 52C relay Connect to the outdoor noise filter circuit board CN52C Only for RP1 6 3VHA LED1 LED2 Operating inspection indicators LED3 Short circuited with jumper wire mounted LED4 Not used nothing mounted CN31 Emergency operation SWP Pump down SW5 Function switch SW4 Test operation SW1 Forced defrost detect history record reset refrigerant address SW6 J1 J6 Model setup...

Page 49: ... signal Connect to the outdoor controller circuit board CN52C CN5 Primary current Connect to the outdoor power circuit board CN5 CNAC1 CNAC2 220 240V AC Connect to the outdoor controller circuit board CNAC EI Connect to the earth LI NI Voltage of 220 240V AC is input Connect to the terminal block TB1 OC294 C 2 qxp 04 10 7 5 12 PM Page 49 ...

Page 50: ... 52C relay signal Connect to the outdoor controller circuit board CN52C CN5 Primary current Connect to the outdoor power circuit board CN5 CNAC1 CNAC2 220 240V AC Connect to the outdoor controller circuit board CNAC EI Connect to the earth LI NI Voltage of 220 240V AC is input Connect to the terminal block TB1 OC294 C 2 qxp 04 10 7 5 12 PM Page 50 ...

Page 51: ...t Connect to the terminal block TB1 CN5 Primary current Connect to the outdoor power circuit board CN5 LO NO Voltage of 220 240V AC is output Connect to the outdoor power circuit board SC R SC S Outdoor noise filter circuit board PUHZ RP4VHA PUHZ RP4VHA1 PUHZ RP5VHA PUHZ RP5VHA1 PUHZ RP6VHA PUHZ RP6VHA1 OC294 C 2 qxp 04 10 7 5 12 PM Page 51 ...

Page 52: ...wn in the diagram above are not actually printed on the board LD1 LD2 300 380V DC Connect to the outdoor controller circuit board CNDC R S Connect to the ACL 220 240V AC U V W Connect to the compressor MC Voltage among phases 5V to 180V AC LD9 Connect to the earth Only RP2 5 3VHA CN5 Primary current detection Connect to the outdoor noise filter circuit board CN5 CN4 Connect from the outdoor contro...

Page 53: ...marks L N N1 N2 P1 P2 U V and W shown in the diagram above are not actually printed on the board POWER MODULE CNDC 300V 370V DC Connect to the outdoor controller circuit board CNDC P1 P2 N1 L N N2 U V W CN5 Detection of primary current Connect to the outdoor noise filter circuit board CN5 CN3 Temperature Heat sink TH8 CN4 Connect to the outdoor controller circuit board CN4 TAB U TAB V TAB W Connec...

Page 54: ...anged from OFF to ON After DIP SW1 1 is changed from OFF to ON there is no problem if DIP SW1 1 is left ON or changed to OFF again This depends on the service conditions 11 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS 1 Function of switches w1 Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is set to ON Auto recovery activates Please set Auto...

Page 55: ...egulated to specified range in cool mode In heating mode the maximum compressor operation frequency is regulated to specified range W The performance is depends on the load of conditioned air of the room How to wiring 1 Make the circuit as shown above with Adaptor for external signal input PAC SC36NA 2 Turn SW1 to on for Low level sound priority mode Turn SW1 to off to release Low level sound prio...

Page 56: ...ected 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 high prior signal M NET W1 Error code displayed on re...

Page 57: ...it has a short cycle on its air duct Compressor over current breaking Start up locked Compressor over current breaking Abnormality of current sensor P B Abnormality of power module Open short of discharge thermistor TH4 Open short of outdoor ther mistor TH8 Open short of outdoor thermistors TH3 TH6 TH7 and TH8 1Check if connectors TH3 TH4 TH6 and TH7 on outdoor controller board and conn ector CN3 ...

Page 58: ...nt operation except RP3VHA 3 When 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 ...

Page 59: ...reds digit 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 wOmit the figures after the decimal fractions 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...

Page 60: ...lay of 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 Thermostat ON time 0 999 Test run elapsed time 0 120 0 999 When i...

Page 61: ...ree phase Display details 0 H P 1 Cooling only 0 Single phase 2 Three phase Setting details Defrosting switch Display details 0 Normal 1 For high humidity Example When heat pump three 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 turn...

Page 62: ...igit and ones digit are displayed by turns DC bus voltage 180 370 180 370 When it is 100V or more hundreds digit tens digit and ones digit are displayed by turns V 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 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...

Page 63: ...t code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error code history 3 Oldest Alternate display of abnormal unit num ber and code When no error history 0 and are displayed by turns Error thermistor display When there is no error thermistor is displayed 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temper...

Page 64: ...rature 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 temperature are displayed by turns Exam...

Page 65: ...less and temperature are displayed by turns When there is no indoor unit 00 is displayed 50 1 1 ON 2 3 4 5 6 Discharge super heat on error occurring SHd 0 255 Cooling TH4 TH6 Heating TH4 Th5 Replacement operation WIf replacement 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...

Page 66: ...Remote controller s internal sensor Not supported Supported indoor unit not equipped with outdoor air intake Supported indoor unit equipped with outdoor air intake 240V 220V 230V Auto energy saving operation ON Auto energy saving operation OFF 2 Normal 3 When the compressor operates the humidifier also operates When the fan operates the humidifier also operates Standard For high humidity 1 2 1 2 3...

Page 67: ... return to step 2 11 11 1 Selecting functions using the wired remote controller Flow of function selection procedure The flow of function selection procedure is shown below The flow is described in case of setting indoor temperature detecting shown in table 1 on the preceding page Refer to procedure 1 to 0 when actually setting functions PAR 20MAA ON OFF CENTRALLY CONTROLLED ERROR CODE CLOCK ON OF...

Page 68: ...rrect refrig erant address and unit number at steps 2 and 3 Designated indoor unit starts fan draft operation by pressingE MODE button Check which indoor unit is designated for func tion setting by doing this In addition all the units of the selected refrigerant address start fan draft operation if the unit number is set to 00 or AL Example When the refrigerant address is set to 00 and the unit nu...

Page 69: ...g other settings simultaneously Repeat steps 3 to 8 to make other function settings 0 0 Completing the function settings Press A FILTER and B TEST RUN buttons simultaneously for at least two seconds For modes 15 and higher press J and B simultaneously for at least 2 seconds After a while the function selection screen will disappear and air conditioner OFF display will appear WDo not use the remote...

Page 70: ...0 4 seconds each repeated three times If a setting number that cannot be recognized by the unit is entered the setting will turn back to the original setting If the signal was not received by the sensor you will not hear a beep or a double beep may be heard Reenter the setting number 6 Repeat steps 4 and 5 to make an additional setting without changing unit number 7 Repeat steps 3 to 5 to change u...

Page 71: ...the rear side and detach the back panel 2 Removing the fan motor 1 Remove the top panel See photo 1 2 Remove the front panel See photo 1 3 Remove 1 nut M6 left screw and detach the propeller 4 Disconnect the connectors FAN11 and FAN12 on the controller circuit board in the electrical parts box 5 Loosen the clamp for the lead wire in the motor support 6 Remove 4 fan motor fixing screws 4 18 and det...

Page 72: ...ng the electrical parts box 1 Remove the service panel See photo 2 2 Remove the top panel See photo 1 3 Remove the front panel See photo 1 4 Disconnect the indoor outdoor connecting wire from terminal block 5 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermistor Outdoor pipe thermistor Discharge thermistor Outdoor 2 phase pipe thermistor Outd...

Page 73: ...tor Discharge TH4 from the sensor holder See photo 8 w When attaching the thermistor Discharge TH4 place it to its original position 7 Removing the solenoid valve coil Four way valve 21S4 and linear expansion valve coil LEV A LEV B 1 Remove the service panel See photo 2 2 Remove the top panel See photo 1 3 Remove the front panel See photo 1 4 Remove the back panel See photo 1 5 Remove the electric...

Page 74: ...r it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 10 Removing the high pressure switch 63H 1 Remove the service panel See photo 2 2 Remove the top panel See photo 1 3 Remove the front panel See photo 1 4 Remove the back panel See photo 1 5 Remove the electrical parts box See photo 5 6 Pull out the lead wire of high pres...

Page 75: ...ssor fixing nuts by using a spanner or a monkey wrench 9 Remove the welded pipe of motor for compressor inlet and outlet Note Collect refrigerant without spreading it in the air Receiver leg fixing screw Receiver leg 13 Removing the power receiver 1 Remove the service panel See photo 2 2 Remove the top panel See photo 1 3 Remove the front panel See photo 1 4 Remove the back panel See photo 1 5 Rem...

Page 76: ...ng screws Propeller Front panel Front panel fixing screws Nut Terminal block TB1 Photo 2 Valve bed Screw Slide 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 from terminal block 4 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermist...

Page 77: ...oller circuit board in the electrical parts box 4 Loosen the clamp for the lead wire in the rear of the electrical parts box See photo 4 5 Pull out the thermistor Outdoor TH7 from the sensor holder Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Outdoor 2 phase pipe TH6 since they are combined together Refer to No 4 above to remove thermistor Outdoor 2 phase pi...

Page 78: ...part of four way valve Note 1 Collect 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 four way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing the linear expansion valve 1 Remove the service panel ...

Page 79: ...ssure switch 63H 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove the electrical parts box See photo 3 4 Remove 3 right side panel fixing screws 5 10 in the rear of the unit and remove the right side panel 5 Pull out the lead wire of high pressure switch 6 Collect the refrigerant 7 Remove the welded part of high pressure switch Note 1 Collect refrigerant without...

Page 80: ... the compressor Note Collect refrigerant without spreading it in the air 14 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 10 and remove the front cover panel See photo 3 4 Remove 2 back cover panel fixing screws 5 10 and remove the back cover panel 5 Remove the electrical parts box See photo 3 6 ...

Page 81: ... fan motor linear expansion valve thermistor Outdoor pipe thermistor Discharge thermistor Outdoor 2 phase pipe thermistor Outdoor thermistor Heat sink high pressure switch low pressure switch solenoid valve coil Four way valve and solenoid valve coil Bypass valve Then remove a screw 4 8 from the valve bad to remove the lead wire Pull out the disconnected wire from the electrical parts box Diagram ...

Page 82: ...l parts box 4 Loosen the clamp for the lead wire in the rear of the electrical parts box See photo 4 5 Pull out the thermistor Outdoor TH7 from the sensor holder Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Outdoor 2 phase pipe TH6 since they are combined together Refer to No 4 above to remove thermistor Outdoor 2 phase pipe Photo 6 Clamp Controller circuit ...

Page 83: ... can be removed easily by removing the right side panel Note 3 When installing the four way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing linear expansion valve 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 3 valve bed fixing screws 4 10 and 4 ball valve an...

Page 84: ... fixing screws 4 10 and remove the capacitor w The reactor and capacitor is attached to the rear of the electrical parts box Photo 9 Capacitor band fixing screws 11 Removing the high pressure switch 63H and low pressure switch 63L 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 3 right side panel fixing screws 5 10 in the rear of the unit and remove the right s...

Page 85: ... welded pipe of motor for compressor inlet and outlet and then remove the compressor Note Collect refrigerant without spreading it in the air 14 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 10 and remove the front cover panel See photo 3 4 Remove 2 back cover panel fixing screws 5 10 and remove ...

Page 86: ...rd fan motor linear expansion valve thermistor Outdoor pipe thermistor Discharge thermistor Outdoor 2 phase pipe thermistor Outdoor thermistor Heat sink high pressure switch low pressure switch solenoid valve coil Four way valve and solenoid valve coil Bypass valve Then remove a screw 4 8 from the valve bad to remove the lead wire Pull out the disconnected wire from the electrical parts box Diagra...

Page 87: ...4 Loosen the clamp for the lead wire in the rear of the electrical parts box See photo 4 5 Pull out the thermistor Outdoor TH7 from the sensor holder Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Outdoor 2 phase pipe TH6 since they are combined together Refer to No 4 above to remove thermistor Outdoor 2 phase pipe Photo 6 Clamp Controller circuit board C B Th...

Page 88: ...ant 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 four way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing linear expansion valve 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3...

Page 89: ...screws 4 10 and remove the capacitor w The reactor and capacitor is attached to the rear of the electrical parts box Photo 9 Capacitor band fixing screws 11 Removing the high pressure switch 63H and low pressure switch 63L 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 3 right side panel fixing screws 5 10 in the rear of the unit and remove the right side pane...

Page 90: ...sor Note Collect refrigerant without spreading it in the air 14 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 10 and remove the front cover panel See photo 3 4 Remove 2 back cover panel fixing screws 5 10 and remove the back cover panel 5 Remove the electrical parts box See photo 3 6 Remove 3 val...

Page 91: ...10 11 12 13 1 1 1 1 1 1 1 1 2 1 1 1 12 4 10 R01 E10 691 R01 E02 668 R01 E15 686 R01 E02 667 R01 E00 518 R01 E02 682 R01 E09 130 R01 E01 684 T7W E01 641 GRILLE FRONT PANEL BASE ASSY SEPARATOR SERVICE PANEL SERVICE PANEL BACK PANEL MOTOR SUPPORT CONDENSER NET TOP PANEL LABEL MITSUBISHI LABEL INVERTER F ST SCREW SU00B229G35 DG79R130H01 BK79C208G01 Z504K189H37 1 2 3 4 5 6 7 8 9 10 11 12 13 OC294 C 4 q...

Page 92: ...62 T7W E02 691 T7W E01 667 R01 E13 686 R01 E06 130 R01 30L 655 R01 E02 658 R01 E01 658 R01 E03 661 T7W E02 668 R01 E00 698 R01 E04 641 R01 E00 655 F ST SCREW SIDE PANEL L FAN GRILLE FRONT PANEL SEPARATOR BASE ASSY MOTOR SUPPORT VALVE BED ASSY HANDLE COVER PANEL FRONT COVER PANEL REAR SIDE PANEL R SERVICE PANEL LABEL MITSUBISHI LABEL INVERTER REAR GUARD TOP PANEL HANDLE DG12F536H10 BK00C143G25 BK00...

Page 93: ...N GRILLE FRONT PANEL SEPARATOR BASE ASSY MOTOR SUPPORT VALVE BED ASSY HANDLE COVER PANEL FRONT COVER PANEL REAR SIDE PANEL R SERVICE PANEL LABEL MITSUBISHI LABEL INVERTER REAR GUARD TOP PANEL HANDLE 5 10 Amount Unit Price Remarks Drawing No R01 E02 662 T7W E02 691 T7W E02 667 R01 E14 686 R01 E07 130 R01 30L 655 R01 E00 658 R01 E01 658 R01 E04 661 T7W E03 668 R01 E01 698 R01 E04 641 R01 E00 655 1 1...

Page 94: ...94 FUNCTIONAL PARTS PUHZ RP1 6VHA PUHZ RP2VHA 1 3 4 2 FUSE 5 6 7 8 9 10 11 12 13 14 17 15 16 18 19 20 21 22 23 24 25 26 27 28 OC294 C 4 qxp 04 10 7 5 16 PM Page 94 ...

Page 95: ...21 315 T7W E09 313 R01 E65 202 R01 E48 408 R01 E09 413 FAN MOTOR PROPELLER NUT MUFFLER MOTOR FOR COMPRESSOR THERMISTOR DISCHARGE POWER RECEIVER STRAINER STOP VALVE GAS STOP VALVE LQUID THERMISTOR OUTDOOR PIPE SOLENOID VALVE COIL FOUR WAY VALVE EXPANSION VALVE LINEAR EXPANSION VALVE COIL CHARGE PLUG HIGH PRESSURE SWITCH FOUR WAY VALVE LINEAR EXPANSION VALVE COIL THERMISTOR OUTDOOR2 PHASEPIPE OUTDOO...

Page 96: ...6 FUNCTIONAL PARTS PUHZ RP2 5VHA PUHZ RP2 5VHA1 PUHZ RP3VHA PUHZ RP3VHA1 16 15 14 1 3 21 22 23 24 29 25 28 26 27 4 9 10 5 12 2 20 FUSE 13 6 7 8 11 17 18 19 30 31 32 OC294 C 4 qxp 04 10 7 5 16 PM Page 96 ...

Page 97: ...VE COIL BYPASS VALVE BYPASS VALVE CAPILLARY TUBE CAPILLARY TUBE THERMISTOR DISCHARGE CHARGE PLUG CHARGE PLUG MOTOR FOR COMPRESSOR THERMISTOR OUTDOOR PIPE THERMISTOR OUTDOOR PIPE STOP VALVE BALL VALVE STRAINER POWER RECEIVER FOUR WAY VALVE SOLENOID VALVE COIL FOUR WAY VALVE EXPANSION VALVE LINEAR EXPANSION VALVE COIL LINEAR EXPANSION VALVE COIL LINEAR EXPANSION VALVE COIL LINEAR EXPANSION VALVE COI...

Page 98: ...98 FUNCTIONAL PARTS PUHZ RP4VHA PUHZ RP5VHA PUHZ RP6VHA 15 14 11 3 22 24 25 26 31 27 30 28 29 5 37 6 8 2 21 FUSE 7 20 1 4 1 33 34 35 9 10 12 13 17 16 18 19 23 36 32 OC294 C 4 qxp 04 10 7 5 16 PM Page 98 ...

Page 99: ...233 T7W E04 346 T7W E16 716 T7W 520 239 T7W E02 259 T7W E01 234 T7W E04 242 T7W E05 254 FAN MOTOR PROPELLER NUT HEAT EXCHANGER ELECTRICAL PARTS BOX POWER RECEIVER MOTOR FOR COMPRESSOR STOP VALVE THERMISTOR DISCHARGE BALL VALVE STRAINER RESTRICTOR VALVE MUFFLER REPLACE FILTER THERMISTOR OUTDOOR PIPE CHARGE PLUG CHARGE PLUG BYPASS VALVE SOLENOIDVALVECOIL BYPASSVALVE EXPANSION VALVE LINEAR EXPANSION ...

Page 100: ...100 FUNCTIONAL PARTS PUHZ RP4VHA1 PUHZ RP5VHA1 PUHZ RP6VHA1 12 3 5 6 10 2 9 1 4 7 8 11 13 14 15 16 17 18 19 20 15 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 OC294 C 4 qxp 04 10 7 5 16 PM Page 100 ...

Page 101: ...7 313 T7W E22 315 R01 E65 202 T7W E00 233 T7W E04 346 T7W 520 239 R01 E66 202 T7W E05 254 FAN MOTOR PROPELLER NUT HEAT EXCHANGER SOLENOID COIL FOUR WAY VALVE FOUR WAY VALVE MUFFLER THERMISTOR DISCHARGE STOP VALVE MOTOR FOR COMPRESSOR POWER RECEIVER BALL VALVE STRAINER CHARGE PLUG EXPANSION VALVE LOW PRESSURE SWITCH LINEAR EXPANSION VALVE COIL REPLACE FILTER BYPASS VALVE SOLENOIDVALVECOIL BYPASSVAL...

Page 102: ...rt No Applied models PAC SF50MA E PUHZ RP3 4 5 6VHA 14 5 A M CONVERTER PAC SF60MA E PUHZ RP1 6 2 2 5 3 4 5 6VHA cCopyright 2003 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Oct 2004 No OC294 REVISED EDITION C PDF 9 Distributed in Jun 2004 No OC294 REVISED EDITION B PDF 9 Distributed in May 2004 No OC294 REVISED EDITION A PDF 9 Distributed in Oct 2003 No OC294 PDF Made in Japan New publica...

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