Mitsubishi Electric PUHZ-RP8YHA Technical & Service Manual

R410a outdoor unit

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Installation manual (146 pages)

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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS No.OC317 TECHNICAL & SERVICE MANUAL R410A Outdoor unit [model names] [Service Ref.] PUHZ-RP8YHA PUHZ-RP8YHA PUHZ-RP10YHA PUHZ-RP10YHA CONTENTS 1. SAFETY PRECAUTION·······································2 2. COMBINATION OF INDOOR AND OUTDOOR UNITS····6 3. FEATURES···························································7 4. SPECIFICATIONS················································8 5. DATA ····································································9 6. OUTLINES AND DIMENSIONS ·························11 7.
Page 2: Safety Precaution
SAFETY PRECAUTION 1-1. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.
Page 3 [1] Cautions for service (1) Perform service after collecting the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.
Page 4 1-2. CHANGED POINT • Precautions when reusing existing R22 refrigerant pipes (1) Flowchart Measure the existing pipe thickness and check for damage. The existing pipe thickness meets specifi- The existing pipe thickness does not meet cations and the pipes are not damaged. specifications or the pipes are damaged.
Page 5 (2) Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.
Page 6: Combination Of Indoor And Outdoor Units
COMBINATION OF INDOOR AND OUTDOOR UNITS 2-1. 1:1 SYSTEM Outdoor unit Indoor unit PUHZ-RP·YHA PEH-RP·MYA 2-2. SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM (1) Synchronized twin (50:50) (2) Synchronized triple (33:33:33) Outdoor unit Outdoor unit Indoor unit PUHZ-RP·YHA Indoor unit PUHZ-RP·YHA PLA-RP4AA PLA-RP2.5AA PLA-RP5AA...
Page 7: Features
FEATURES PUHZ-RP8YHA PUHZ-RP10YHA CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m) The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems.
Page 8: Specifications
SPECIFICATIONS PUHZ-RP8YHA PUHZ-RP10YHA Service Ref. Function Cooling Heating Cooling Heating Btu/h 64,800 76,400 75,000 92,100 Capacity 19.0(10.0~22.4) 22.4(10.0~25.0) 22.0(12.5~28.0) 27.0(15.7~31.5) Total input 6.76 6.98 7.83 8.41 Power supply (phase, cycle, voltage) 3-ph, 50Hz, 380-400-415V (4wires) Running current 10.0 10.4 11.5 12.4...
Page 9: Data
DATA 5-1. ELECTRICAL PARTS SPECIFICATIONS Outdoor unit PUHZ-RP10YHA PUHZ-RP8YHA Parts name FUSE 250V 15A (FUSE1,2) FUSE 250V 6.3A (FUSE3,4) Solenoid Valve VT60100 (Four-way Valve) Solenoid Valve Coil LB64 (Four-way Valve) (DM50G461) 21S4 Linear Expansion HAM-BD32 Valve (0~480 Pulse) (LEV-A) Linear Expansion...
Page 10: Noise Criterion Curves
Compressor model 0.72 Winding 0.72 Resistance ( " ) 0.72 5-3. NOISE CRITERION CURVES MICROPHONE UNIT GROUND SPL(dB) SPL(dB) MODE LINE MODE LINE PUHZ-RP8YHA PUHZ-RP10YHA COOLING 55.0 COOLING 58.0 HEATING 56.0 HEATING 58.0 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40...
Page 11: Outlines And Dimensions
OUTLINES AND DIMENSIONS PUHZ-RP8YHA Unit : mm PUHZ-RP10YHA...
Page 12: Wiring Diagram
WIRING DIAGRAM PUHZ-RP8YHA PUHZ-RP10YHA...
Page 13: Wiring Specifications
WIRING SPECIFICATIONS WIRING SPECIFICATIONS FOR 220V-240V 50Hz (INDOOR - OUTDOOR CONNECTING CABLE) The cable shall not be lighter than design 245 IEC or 227 IEC. When cable length is 30m or more. Use one cable for S1 and S2 and another for S3 as shown in the picture. wire size : cable length 50m : 4mm cable length 80m : 6mm...
Page 14: Specifications For Electrical Work
SPECIFICATIONS FOR ELECTRICAL WORK 9-1. FIELD ELECTRICAL WIRING (POWER WIRING SPECIFICATIONS) PUHZ-RP•YHA Models (Outdoor unit) RP10 Outdoor unit Phase 3N~(3ph 4wires) Power supply Frequency & Voltage 50Hz, 380-400-415V Input capacity Outdoor unit (A) Main switch/Breaker Outdoor unit Wire No. Power supply Cable length 50 m : 3 o 4 (Polar) Indoor unit/Outdoor unit connecting Wire No.
Page 15: M-Net Wiring Method
9-2. M-NET WIRING METHOD (Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube.
Page 16 M-NET wiring M-NET (1) Use 2-core x 1.25mm shield wire for electric wires. terminal Ground (Excluding the case connecting to system controller.) block wire (2) Connect the wire to the M-NET terminal block.Connect one core of the transmission wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.
Page 17: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PUHZ-RP8YHA PUHZ-RP10YHA Refrigerant flow in cooling Refrigerant flow in heating High pressure switch 63H Charge plug 4-way valve (High pressure) Thermistor TH6 Stop valve (with service port) (Outdoor 2-phase pipe) Heat exchanger Refrigerant GAS pipe connection Strainer...
Page 18: Cooling Capacity
CAPACITY CURVES Cooling capacity Cooling input Indoor intake air wet-bulb temperature <W.B. :> Indoor intake air wet-bulb temperature <W.B. :> Outdoor intake air dry-bulb temperature <D.B. :> Outdoor intake air dry-bulb temperature <D.B. :> Heating capacity Heating input Indoor intake air dry-bulb temperature <D.B. :> Indoor intake air dry-bulb temperature <D.B.
Page 19: Applicable Extension Pipe For Each Model
APPLICABLE EXTENSION PIPE FOR EACH MODEL 12-1. 1:1 SYSTEM (1) Pipe length <Table 1> Maximum pipe length (RP8·RP10) Liquid [9.52 [12.7 [15.88 pipe Thick- t0.8 t0.8 t1.0 (mm) ness [19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75 pipe Thick-...
Page 20 (3) Capacity correction Cooling and heating capacity is lowered according to the piping length. Capacity can be obtained by referring to the following capacity curves. When the diameter of the gas pipe is smaller than the standard size, cooling capacity is lowered comparing to the operation using the standard diameter pipe.
Page 21 12-2. SYNCHRONIZED TWIN, TRIPLE AND QUADRUPLE SYSTEM (1) Synchronized twin Maximum pipe length (Main pipe[A]+Branch pipe diameter [ B and C ]) RP8 twin (RP4 2) RP10 twin (RP5 2) Main pipe Liquid pipe [9.52 [12.7 [15.88 [9.52 [12.7 [15.88 Gas pipe (mm)[A] [19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75 [19.05 [22.2 [25.4 [28.58 [19.05 [22.2 [25.4 [28.58 [22.2 [25.4 [28.58 [31.75...
Page 22 Pipe diameter and thickness [6.35 [9.52 [12.7 [15.88 [19.05 [22.2 [25.4 [28.58 [31.75 (mm) Thickness (mm) Be sure to use hard (tempered) one for pipe over [22.2.(Do not use soft (annealed) one.) 1 Indoor unit 2 Outdoor unit Height difference (Indoor unit- 3 Main piping Outdoor unit) Max.
Page 23 <Table 10> A+B+C+D permitted At time of shipping Outdoor unit Amount of additional refrigerant charge (kg) (kg) pipe length 30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-80 m and less The additional charge 0.9 kg 1.8 kg...
Page 24 Refrigerant collecting (pump down) Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit. 1 Before collecting the refrigerant, first make sure that the all of the SW5 DIP switches 4 As the unit automatically stops after two or three minutes of refrigerant collecting operation (LED1 if not lit and LED2 is lit), be sure to quickly for function changes on the control board of the outdoor unit are set to OFF.
Page 25: Troubleshooting
TROUBLESHOOTING 13-1. TROUBLESHOOTING <Error code display by self-diagnosis and actions to be taken for service (summary)> Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are sum- marized in the table below.
Page 26 13-2. CHECK POINT UNDER TEST RUN (MA remote controller) (1) Before test run • After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak- age, loosened connections and incorrect polarity. •...
Page 27 wPress the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD display. Contents of inferior phenomena Contents of inferior phenomena Abnormality of room temperature thermistor U1~UP Malfunction outdoor unit Abnormality of pipe temperature thermistor/Liquid Malfunction outdoor unit F3~F9 Abnormality of drain sensor...
Page 28 13-3. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER 13-3-1. Error history of unit (1) Wired remote controller <In case of trouble during operation> Setting number If there is a trouble on air conditioner, both indoor unit and out- Refrigerant address Mode number door unit will stop and digital display shows what was wrong.
Page 29 4 To cancel self-diagnosis There are following two methods to cancel self-diagnosis: Press the H “CHECK” button twice within three seconds. Self-diagnosis is cancelled and the display screen will return to the status before self-diagnosis. Press the I “ON/OFF” button. Self-diagnosis is cancelled and indoor unit will stop.
Page 30 (2) Digital wireless remote controller <In case of trouble during operation> When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1.
Page 31 13-3-2. Wired Remote controller Diagnosis If operation can not be carried out from remote controller, try remote controller diagnosis with following process. 1 First, check the electricity current marker. When correct voltage (DC12V) is not supplied to remote controller, the electricity current marker is put out. If the electricity current marker is not lighted, check the remote controller wiring and the indoor units.
Page 32: Self-Diagnosis Action Table
13-4. SELF-DIAGNOSIS ACTION TABLE (Note 1) Refer to indoor unit section for code P and code E. <Abnormalities detected when the power is put on> Error Code Meaning of error code and detection method Judgment and action Case 1 No voltage is supplied to terminal 1 Check following items.
Page 33 Error Code Meaning of error code and detection method Case Judgment and action 1 Contact failure or mis-wiring of 1 Check disconnection or looseness or polarity Indoor/outdoor unit connector indoor/outdoor unit connecting of indoor/outdoor unit connecting wire of mis-wiring, excessive number of units wire.
Page 34 <Abnormalities detected while unit is operating> <Abnormalities detected while unit is operating> Error Code Meaning of error code and detection method Judgment and action Case 1 Short cycle of indoor unit. 1~6Check indoor unit and repair defectives. Abnormal high pressure (High-pressure 2 Clogged filter of indoor unit.
Page 35 Error Code Meaning of error code and detection method Judgment and action Case Open/short circuit of discharge 1 Disconnection or contact 1 Check connection of connector (TH4) on the temperature thermistor (TH4) failure of connector (TH4) on outdoor controller circuit board. Check breaking of the lead wire for the outdoor controller circuit Abnormal if open (3: or less) or short...
Page 36 Error Code Meaning of error code and detection method Judgment and action Case 1 Decrease of power supply voltage. 1 Check the facility of power supply. Abnormality such as overvoltage or 2 Defective 52C drive circuit of 2 Replace outdoor power circuit board. voltage shortage and abnormal synchronous signal to main circuit outdoor power circuit board.
Page 37 Error Code Meaning of error code and detection method Judgment and action Case 1 Defective communication cir- 1~3 Diagnose remote controller. Remote controller communication error cuit of remote controller. (Signal receiving error) Take actions as follows according to 2 Defective communication cir- (1) Abnormal if any signal from IC of refrig- diagnosis result.
Page 38 Error Code Meaning of error code and detection method Judgment and action Case Abnormality of pipe temperature 1 Slight temperature difference Check pipe <liquid or condenser / <Cooling mode> between indoor room evaporator> temperature with room Detected as abnormal when the pipe tem- temperature and pipe <liquid temperature display on remote perature is not in the cooling range 3 min-...
Page 39 Error Code Meaning of error code and detection method Case Judgment and action Communication error with communica- 1 Data of transmission proces- Shut of the power supply of outdoor unit and tion processor indoor unit and FRESH MASTER or LOSSNAY sor or unit processor is not Defective communication between unit at the same time for two minutes or more, and...
Page 40 From the previous page. Error Code Meaning of error code and detection method Case Judgment and action 4. If displayed address or attribute is 1 During group operation with Same as mentioned in “A7” of the previous remote controller, indoor unit of multi- refrigerant page.
Page 41: Troubleshooting By Inferior Phenomena
Error Code Meaning of error code and detection method Case Judgment and action 1 Transmitting condition is 1 Check transmission wave form or noise on M-NET•NO RESPONSE Abnormal if a massage was transmitted repeated fault because of transmission wire. noise and the like. and there were reply (ACK) that massage 2 Shut off the power supply of outdoor unit and 2 Extension of transmission wire...
Page 42 Factor Phenomena Countermeasure 5. When operating by the wireless 1No operation for 2 minutes at most after the power 1Normal operation. remote controller, beep sound is supply ON. heard, however, unit does not start 2Hand-held remote controller operation is prohibited. 2Normal operation.
Page 43 13-6. HOW TO CHECK THE PARTS PUHZ-RP8YHA PUHZ-RP10YHA Parts name Check points Disconnect the connector then measure the resistance using a tester. Thermistor (TH3, TH32) (Surrounding temperature 10:~30:) <Outdoor pipe> Normal Abnormal Thermistor (TH4) <Discharge> 160k"~410k" Thermistor (TH6) TH3, TH32 <Outdoor 2-phase pipe>...
Page 44 13-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3, TH32) • Thermistor <Outdoor 2-phase pipe> (TH6) • Thermistor <Outdoor> (TH7) Thermistor R0 = 15k' ± 3% B constant = 3480K ± 2% =15exp{3480( 273+t –...
Page 45: Linear Expansion Valve
Linear expansion valve (1) Operation summary of the linear expansion valve. • Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller circuit board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller circuit board and the linear expansion valve>...
Page 46 (3) How to attach and detach the coil of linear expansion valve <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Coil Lead wire Stopper <How to detach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward.
Page 47: Emergency Operation
13-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller circuit board.
Page 48: Test Point Diagram Outdoor Controller Circuit Board
13-9. TEST POINT DIAGRAM Outdoor controller circuit board CN332 Power supply for outdoor PUHZ-RP8YHA FAN controller circuit PUHZ-RP10YHA board (CN2) High pressure switch 1—2 : 18VDC [2: – 1: + ] CNDC (Indoor/outdoor unit 310V~340V DC connecting wire) Connect from...
Page 49 W Usually, they are in a state of being short-circuited if they are broken. Outdoor Power circuit board Measure the resistance in the following points (connectors, etc.). PUHZ-RP8YHA If they are short-circuited, it means that they are broken. PUHZ-RP10YHA 1. Check of POWER MODULE 1.Check of DIODE circuit...
Page 50 Outdoor Noise filter circuit board PUHZ-RP8YHA PUHZ-RP10YHA LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1 : AC380/400/415V input LI1-NI/LI2-NI/LI3-NI : AC220/230/240V input (Connect to the terminal block (TB1)) Connect to the earth CNAC1, CNAC2 AC220/230/240V (Connect to the out- door controller circuit...
Page 51 Outdoor Fan controller circuit board PUHZ-RP8YHA PUHZ-RP10YHA TAB-U, TAB-V, TAB-W (RED) (WHITE)(BLACK) Connect to the Fan motor (MF) Voltage among phases : 20V-380V AC Power supply from outdoor controller Control signal from outdoor controller circuit board (CN332) circuit board (CN331)
Page 52: Function Of Switches, Connectors And Jumpers
13-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type Action by the switch operation Function Effective timing Switch switch When compressor is working Compulsory defrosting Start Normal in heating operation. w Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6 1 2 3 4 5 6...
Page 53 (2) Function of connectors Action by the switch operation Types Connector Function Effective timing Short Open Connector CN31 Start When power supply ON Emergency operation Normal SW6-1 SW6-2 SW6-3 SW6-4 SW6-5 Model select SW6-6 SW8-1 SW10-1 SW10 SW10-2 W 1 As for SW8, see also 13-10 (1) Function of switches, as SW8 sets the replacement operation as well.
Page 54 Special function (a) Low-level sound priority mode (Local wiring) Unit enters into Low-level sound priority mode by SW7-1, 2 and external signal input setting. Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for Demand input located on the outdoor controller circuit board enables to control compressor operation frequency.
Page 55 <Display function of inspection for outdoor unit> The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector CNM on outdoor controller circuit board.
Page 56 Indication Error Error Outdoor controller circuit board Detailed Contents Inspection method reference code LED1 (Green) LED2 (Red) page 1Check if stop valves are open. 3 blinking 1 blinking P.34 Abnormality of shell thermostat 2Check if connectors (TH4, LEV-A) on outdoor controller circuit board are not and discharging temperature (TH4) disconnected.
Page 57 <Outdoor unit operation monitor function> [When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to outdoor controller circuit board(CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by control- ling DIP SW2 on ‘A-Control Service Tool’. Operation indicator SW2 : Indicator change of self diagnosis Explanation for display...
Page 58 Explanation for display Unit SW2 setting Display detail Pipe temperature / Liquid(TH3) – 40~90 – 40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) 2 3 4 5 6 When –10:; 0.5 secs. 0.5 secs.
Page 59 Explanation for display Unit SW2 setting Display detail Pipe temperature / Liquid(TH3) on error – 40~90 occurring (When the coil thermistor detects 0: or below, “–” – 40~90 and temperature are displayed by turns.) (Example) When –15:; 0.5 secs. 0.5 secs. 2 secs. 2 3 4 5 6 Compressor temperature (TH4) or 3~217...
Page 60 Explanation for display SW2 setting Display detail Unit The number of connected indoor units (The number of connected indoor units are dis- played.) Unit 2 3 4 5 6 Capacity setting display Displayed as an outdoor capacity code. Capacity Code RP8Y Code display...
Page 61 Explanation for display Unit SW2 setting Display detail Indoor setting temperature 17~30 17~30 2 3 4 5 6 Outdoor pipe temperature / Cond./ – 39~88 Eva. (TH6) (When the temperature is 0: or less, “–” and – 39~88 temperature are displayed by turns.) 2 3 4 5 6 Outdoor outside temperature (TH7) –...
Page 62 Explanation for display Unit SW2 setting Display detail 0~100 Capacity save (When the capacity is 100% hundreds digit, tens digit 0~255 and ones digit are displayed by turns.) When air conditioner is connected to (Example) M-NET and capacity save mode is When 100%;...
Page 63 Explanation for display Unit SW2 setting Display detail 0~480 LEV-A opening pulse on error occurring (When it is 100 pulse or more, hundreds digit, tens 0~480 digit and ones digit are displayed by turns.) (Example) Pulse When 130 pulse; 0.5 secs. 0.5 secs.
Page 64 Explanation for display Unit SW2 setting Display detail 0~255 Discharge super heat on error occurring (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by 0~255 turns.) (Example) Cooling = TH4-TH6 Heating = TH4-Th5 When 150°C;...
Page 65 Explanation for display Unit SW2 setting Display detail Controlling status of compressor The following code will be a help to know the operating frequency operating status of unit. • The tens digit Display Compressor operating frequency control Primary current control Secondary current control •...
Page 66 13-11. SELECTING FUNCTIONS USING 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>...
Page 67: Operating Instructions
13-11-1. 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. Wired type Selecting functions using the wired remote controller Mode number...
Page 68 4 4 Setting the indoor unit number Press C (TIMER SET) button to select the unit Press D(CLOCK ON OFF) and [--] will start to flash in the unit number from 00, 01, 02, 03, 04, and AL. number display (4) . FUNCTION FUNCTION •...
Page 69 8 8 Registering the settings from steps 3 3 to 7 7 into memory The mode and setting numbers (1)(2) will start to flash when the MODE button E is pressed and registration will begin. The numbers are set when the flashing stays lit. FUNCTION FUNCTION WIf [---] appears in the room temperature display as the mode/setting number, or if a flashing [88] display appears, a transmis-...
Page 70 13-11-2. Selecting functions using the wireless remote controller (Type C) Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger- ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller. [Flow of function selection procedure] The flow of the function selection procedure is shown below.
Page 71: Disassembly Procedure
DISASSEMBLY PROCEDURE w When servicing, pay careful attention in removing heavy parts. w Collect the refrigerant before you service the refrigerant system. PUHZ-RP8YHA PUHZ-RP10YHA w When brazing, make sure to apply the non-oxidizing braze. OPERATING PROCEDURE PHOTOS 1. Removing the service panel...
Page 72 OPERATING PROCEDURE PHOTOS 4. Removing the fan motor Photo 3 (1) Remove Fan guard • 10 fan guard fixing screws (5o15) (see photo 3). • Fan guard by sliding it upward. • Cap by pulling it upward (see photo 4). •...
Page 73 OPERATING PROCEDURE PHOTOS 5. Removing the electrical parts box Electrical parts box Photo 6 fixing screw (1) Remove • Service panel. • Waterproof sheet for the electrical parts. (2) Disconnect Outdoor • Power wire from TB1, and the indoor / outdoor connecting Controller wire from TB2 (see photo 6).
Page 74 OPERATING PROCEDURE PHOTOS 8. Removing the thermistor <Discharge> Photo 8 (1) Remove the service panel. Thermistor Bypass solenoid (2) Disconnect the connector TH4 (3P, white) from the controller <Discharge> valve circuit board. (TH4) (3) Loosen all the clamps for the lead wire (see photo 7). (4) Pull out the thermistor (TH4) from the sensor holder mounted on the compressor discharging pipe (see photo 8).
Page 75 OPERATING PROCEDURE PHOTOS 10. Removing the 4-way solenoid valve Bypass solenoid Photo 10 Thermistor (1) Remove valve <Discharge> • Service panel. • 3 cover panel fixing screws (5o10). • Cover panel (see photo 6). • 4-way solenoid valve coil (see photo 8, 9). •...
Page 76 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 12. Removing the bypass solenoid valve (1) Remove • Service panel • 3 cover panel fixing screws (5o10). • Cover panel (see photo 6). • Bypass solenoid valve coil (see photo 9). • 2 valve bed support fixing screws (5o10), then valve bed support (see photo 9).
Page 77 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 14. Removing the reactor Photo 13 (1) Remove screws • Service panel • 2 screws (4o8) that hold the terminal block fixing metal plate in front of the electrical parts box, then slightly pull the plate towards you.
Page 78 OPERATING PROCEDURE PHOTOS Photo 16 16. Removing the accumulator (1) Remove Fan motor • Service panel (see photo 1). • Electrical parts box (see photo 6). • 2 electrical parts box leg fixing screws (5o10), then electrical parts box legs (see photo 6). •...
Page 79: Parts List
PARTS LIST FAN PARTS PUHZ-RP8YHA PUHZ-RP10YHA ty/set Price Wining Recom- PUHZ Remarks Part No. Part Name Specification Diagram mended (Drawing No.) RP10 Symbol Unit Amount R01 E01 122 MOTOR CAP R01 E05 097 NUT M16 BG02U187H03 — SUPPORT R01 E20 130...
Page 80 STRUCTURAL PARTS PUHZ-RP8YHA PUHZ-RP10YHA...
Page 81 ty/set Price Wining Recom- PUHZ Remarks Part No. Part Name Specification Diagram mended (Drawing No.) RP10 Symbol Unit Amount R01 E01 675 FAN GUARD R01 E05 662 SIDE PANEL (L) R01 E06 668 FRONT PANEL R01 E05 667 SERVICE PANEL R01 E06 658 COVER PANEL —...
Page 82 FUNCTIONAL PARTS PUHZ-RP8YHA PUHZ-RP10YHA...
Page 83 ty/set Price Wining Recom- PUHZ Remarks Part No. Part Name Specification Diagram mended (Drawing No.) RP10 Symbol Unit Amount T97 410 741 MOTOR FOR COMPRESSOR ANV47FFBMT R01 E20 242 LINEAR EXPANSION VALVE COIL R01 E59 401 LINEAR EXPANSION VALVE R01 E06 413 CHARGE PLUG R01 E05 413 CHARGE PLUG...
Page 84 ELECTRICAL PARTS PUHZ-RP8YHA PUHZ-RP10YHA...
Page 85 ty/set Price Wining Recom- PUHZ Remarks Part No. Part Name Specification Diagram mended (Drawing No.) RP10 Symbol Unit Amount T7W E23 315 CONTROLLER CIRCUIT BOARD C.B. — CIRCUIT BOARD SUPPORT PLATE RG02N450G10 250V 6.3A R01 E02 239 FUSE FUSE3,4 R01 E03 239 FUSE 250V 15A FUSE1,2...
Page 86: Optional Parts
PAC-SK80SI-E M-NET adapter PAC-SF60MA-E HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN cCopyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Nov. 2004 No.OC317 PDF 9 New publication, effective Nov. 2004 Made in Japan. Specifications subject to change without notice.

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