Mitsubishi Electric PUHZ-RP250YHA2 Service Manual
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Mitsubishi Electric PUHZ-RP250YHA2 Service Manual

Outdoor unit
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See also: Installation Manual , Technical Data Manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

R410A
Outdoor unit
[model names]
[Service Ref.]
PUHZ-RP200YHA2
PUHZ-RP250YHA2
PUHZ-RP200YHA2
PUHZ-RP250YHA2
Note:
• This manual describes only
• RoHS compliant products
CONTENTS
1. REFERENCE MANUAL ································ 2
2. SAFETY PRECAUTION ································ 3
3. FEATURES ···················································· 7
4. SPECIFICATIONS ········································· 8
5. DATA······························································ 9
6. OUTLINES AND DIMENSIONS ·················· 12
7. WIRING DIAGRAM ····································· 13
8. WIRING SPECIFICATIONS························· 14
9. REFRIGERANT SYSTEM DIAGRAM ············ 19
10. TROUBLESHOOTING································· 21
11. FUNCTION SETTING ·································· 73
13. EASY MAINTENANCE FUNCTION ··············90
14. DISASSEMBLY PROCEDURE···················· 93
PARTS CATALOG (OCB428)
November 2007
No.OCH428
service data of the outdoor
units.
have <G> mark on the
spec name plate.

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Summary of Contents for Mitsubishi Electric PUHZ-RP250YHA2

  • Page 1: Service Manual

    [model names] • This manual describes only service data of the outdoor PUHZ-RP200YHA2 PUHZ-RP200YHA2 units. • RoHS compliant products PUHZ-RP250YHA2 have <G> mark on the PUHZ-RP250YHA2 spec name plate. CONTENTS 1. REFERENCE MANUAL ································ 2 2. SAFETY PRECAUTION ································ 3 3.

  • Page 2: Reference Manual

    REFERENCE MANUAL INDOOR UNIT’S SERVICE MANUAL Service Model name Service Ref. Manual No. PLA-RP35/50/60/71/100/125/140BA PLA-RP35/50/60/71/100/125/140BA OCH412 OCB412 PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA OC328 PCA-RP50GA2 PCA-RP50GA2 PCA-RP71/125HA PCA-RP71/125HA OC329 PKA-RP35/50GAL PKA-RP35/50GAL OC330 PKA-RP60/71/100FAL PKA-RP60/71/100FAL OC331 PKA-RP50FAL2 PKA-RP50FAL2 PEAD-RP50/60/71/125/140EA PEAD-RP50/60/71/125/140EA.UK HWE05210 PEAD-RP35/100EA2 PEAD-RP35/100EA2.UK PEAD-RP60/71/100GA.UK PEAD-RP60/71/100GA HWE05060 PEA-RP200/250/400/500GA.TH-AF PEA-RP200/250/400/500GA...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 2-2. 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 4 [1] Cautions for service (1) Perform service after recovering 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 5: Precautions When Reusing Existing R22 Refrigerant Pipes

    2-3. 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. Check if the existing air conditioner can operate.
  • Page 6 (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 7: Features

    25:25:25:25 MSDF-1111R-E 3-2. FEATURES PUHZ-RP200YHA2 PUHZ-RP250YHA2 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-RP200YHA2 PUHZ-RP250YHA2 Service Ref. Mode Cooling Heating Cooling Heating Power supply (phase, cycle, voltage) 3 phase 50Hz, 400V 7.70 8.90 9.50 11.1 Running current Max. current Munsell 3Y 7.8/1.1 External finish Refrigerant control Linear Expansion Valve Compressor Hermetic ANB52FFJMT...

  • Page 9: Data.

    5-2. COMPRESSOR TECHNICAL DATA Unit PUHZ-RP200, 250YHA2 ANB52FFJMT Compressor model 0.30 Winding 0.30 Resistance 0.30 5-3. NOISE CRITERION CURVES PUHZ-RP200YHA2 MODE SPL(dB) LINE COOLING PUHZ-RP250YHA2 MICROPHONE HEATING UNIT 1.5m NC-70 GROUND NC-60 NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS...
  • Page 10 5-4. ELECTRICAL PARTS SPECIFICATIONS Outdoor unit PUHZ-RP250YHA2 PUHZ-RP200YHA2 Parts name FUSE 250V 15A (FUSE1,2) FUSE 250V 6.3A (F 3,4) Valve STF0731Z STF AC220~240V 4-way Valve Coil (BG50T388) 21S4 Linear Expansion UKV-32D HAM-BD35 Valve (0~480 Pulse) (0~480 Pulse) Linear Expansion Valve Coil...

  • Page 11: Table Of Contents

    1, 50 Voltage Input 0.14 ×2 0.13 ×2 0.15 ×2 0.14 ×2 Current 0.94 ×2 0.87 ×2 1.00 ×2 0.94 ×2 PUHZ-RP200YHA2 PUHZ-RP250YHA2 Outdoor unit 3, 50 3, 50 Phase , Hz Voltage Current 7.70 8.90 9.50 11.1 2.71 2.46 2.86...

  • Page 12: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-RP200YHA2 Unit : mm PUHZ-RP250YHA2...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM PUHZ-RP200YHA2 PUHZ-RP250YHA2 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> P.B. Switch<Function Setup> Power Circuit Board Terminal Block<Indoor/Outdoor> Switch SC-U/V/W Connection Terminal<U/V/W-Phase> Motor for Compressor Switch<Pump Down> TB-L1/L2/L3 Connection Terminal<L1/L2/L3-Power supply> MF1,MF2 Fan Motor Connector<Emergency Operation>...

  • Page 14: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) P200, P250 Outdoor unit model RP200, 250 Outdoor unit Phase 3N~(3ph 4-wires), 50 Hz, Power supply Frequency & Voltage 380 - 400 - 415 V Outdoor unit input capacity 32 A Main switch (Breaker) Outdoor unit power supply Min.
  • Page 15 1:1 System (Indoor : PEA-200, 250) 1:2 System (Indoor : PEA-400, 500) Outdoor Indoor Outdoor Indoor unit unit unit No.1 unit Unit Unit Unit Unit power power power power supply supply supply supply Indoor/outdoor Indoor/outdoor unit connection unit connection cable cable Earth leakage breaker Earth leakage breaker...

  • Page 16: Power Supply

    8-3. INDOOR – OUTDOOR CONNECTING CABLE WIRING SPECIFICATIONS FOR 220-240 V 50 Hz (INDOOR-OUTDOOR CONNECTING CABLE) Cross section of cable Wire size (mm Number of wires Polarity L (m)*6 Round Clockwise : S1-S2-S3 (30) * Pay attention to stripe of yellow and green. Flat Not applicable Not applicable...
  • Page 17 8-4. 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 18 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 M1 terminal and the other to M2. Peel the M1 M2 shield wire, twist the shield part to a string and connect it to S terminal.

  • Page 19: Refrigerant System Diagram

    Linear expansion Restrictor valve Stop valve valve (with service port) Bypass valve Capillary tube Replace O.D.4.0 I.D.3.0 L500 filter PUHZ-RP250YHA2 Thermistor (TH7) High pressure Heat exchanger switch(63H2) Thermistor (TH6) Ball valve 4-way valve Refrigerant GAS pipe 25.4( 1 inch) Strainer...
  • Page 20 9-1. Refrigerant recovering (pump down) Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit. Turn on the power supply (circuit breaker). When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CENTRALLY CONTROLLED”...

  • Page 21: Troubleshooting

    TROUBLESHOOTING 10-1. 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 trouble is reoccurring at service, are summarized in the table below.
  • Page 22 Operating procedures While the room temperature display on the remote "TEST RUN" and the currently selected controller is “PLEASE WAIT”, the remote controller is disabled. operation mode are displayed altemately. Wait until “PLEASE WAIT” disappears before using remote controller. 1. Turn on the main power supply. “PLEASE WAIT”...
  • Page 23 Test run [for wireless remote controller] Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M . TEST RUN Turn on the main power to the unit. TEST RUN Press the button twice continuously.

  • Page 24: How To Proceed "Self-Diagnosis

    10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. When a Problem Occurs During Operation If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display. [CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit number are displayed alternately as shown below.

  • Page 25: Remote Controller Diagnosis

    When the error history is reset, the display will look like the one shown below. Press the ON/OFF button twice within 3 seconds. The self-diagnosis However, if you fail to reset the error history, the error content will be displayed address or refrigerant address will blink.
  • Page 26 10-3-4. Malfunction-diagnosis method by 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 27: Discharge Temperature

    • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp blink pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.

  • Page 28: Self-Diagnosis Action Table

    10-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> (Note 1) Refer to indoor unit section for code P and code E. Abnormal point and detection method Judgment and action Error Code Case No voltage is supplied to terminal Check following items.
  • Page 29 Error Code Abnormal point and detection method Case Judgment and action Check disconnection or looseness or polar- Indoor/outdoor unit connector Contact failure or miswiring of indoor/outdoor unit connecting ity of indoor/outdoor unit connecting wire of miswiring, excessive number of units wire indoor and outdoor units.
  • Page 30 <Abnormalities detected while unit is operating> Abnormal point and detection method Judgment and action Error Code Case High pressure (High-pressure switch Short cycle of indoor unit ~ Check indoor unit and repair defect. 63H(RP200)/63H1 or 63H2(RP250) Clogged filter of indoor unit worked) Decreased airflow caused by Abnormal if high-pressure switch...
  • Page 31 Abnormal point and detection method Judgment and action Error Code Case Open/short of outdoor unit thermistors Disconnection or contact failure Check connection of connector (TH3,TH7/6) on (TH3, TH6, TH7, and TH8) of connectors the outdoor controller circuit board. Abnormal if open or short is detected Outdoor controller circuit Check breaking of the lead wire for thermistor board: TH3,TH7/6...
  • Page 32 Abnormal point and detection method Judgment and action Error Code Case Decrease of power supply voltage Abnormality such as overvoltage or Check the facility of power supply. Disconnection of compressor voltage shortage and abnormal Correct the wiring (U·V·W phase) to compressor. wiring synchronous signal to main circuit Refer to 10-9 (Outdoor power circuit board).
  • Page 33 Abnormal point and detection method Judgment and action Error Code Case Low pressure (63L worked)(RP250) Stop valve of outdoor unit is Check stop valve. Abnormal if 63L is worked (under closed during operation. -0.03MPa) during compressor operation. Disconnection or loose con- Turn the power off and on again to check 63L: Low-pressure switch nection of connector (63L) on...
  • Page 34 Abnormal point and detection method Judgment and action Error Code Case Remote controller transmission error(E3)/signal receiving error(E5) 2 remote controllers are set as Set a remote controller to main, and the Abnormal if remote controller could not “main.” other to sub. find blank of transmission path for 6 sec- (In case of 2 remote control- onds and could not transmit.
  • Page 35 Abnormal point and detection method Judgment and action Error Code Case Pipe temperature Slight temperature difference Check pipe <liquid or condenser / evapo- <Cooling mode> between indoor room rator> temperature with room tempera- Detected as abnormal when the pipe tem- temperature and pipe <liquid ture display on remote controller and perature is not in the cooling range 3 min-...
  • Page 36 Error Code Abnormal point and detection method Case Judgment and action Communication error with communica- Data of transmission proces- Turn off the power supply of outdoor unit, tion processor sor or unit processor is not indoor unit and FRESH MASTER or LOSSNAY Defective communication between unit transmitted normally because at the same time for 2 minutes or more, and...
  • Page 37 From the previous page Error Code Abnormal point and detection method Case Judgment and action 4. If displayed address or attribute is During group operation with Same as mentioned in “A7” of the previous indoor unit of multi- refrigerant page remote controller, indoor unit detects system, if indoor unit transmit abnormality when indoor unit transmits...

  • Page 38: Troubleshooting By Inferior Phenomena

    Error Code Abnormal point and detection method Case Judgment and action M-NET NO RESPONSE Transmitting condition is Check transmission waveform or noise on Abnormal if a message was transmitted repeated fault because of transmission wire. noise and the like. and there were reply (ACK) that message Turn off the power supply of outdoor unit Extension of transmission wire was received, but response command...
  • Page 39 Phenomena Factor Countermeasure 4. Even controlled by the wireless The pair number settings of the wireless remote con- Check the pair number settings. remote controller, no beep is heard troller and indoor controller board are mismatched. and the unit does not start operat- ing.
  • Page 40 Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller. Inspection method and Diagnosis flow Cause troubleshooting Check the display time of “PLEASE WAIT” after turning on the main power. 6 minutes 2 minutes or more or less How long is “PLEASE WAIT” •...

  • Page 41: Symptoms: Nothing Is Displayed On The Remote Controller

    LED display of the indoor controller board LED1 : Symptoms: Nothing is displayed on the remote controller LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 42 LED display of the indoor controller board LED1 : Symptoms: Nothing is displayed on the remote controller LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 43 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller LED1 : LED2 : LED3 : — Inspection method and Diagnosis flow Cause troubleshooting Check the voltage of the terminal block (TB6) of the remote controller. •...
  • Page 44 • Before repair Frequent calling from customers Phone Calls From Customers How to Respond Note Unit does The operating display of Check if power is supplied to air conditioner. not operate remote controller does not Nothing appears on the display unless power is at all.
  • Page 45 Phone Calls From Customers How to Respond Note The room cannot be cooled or heated sufficiently. Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature.
  • Page 46 Phone Calls From Customers How to Respond Note However, this control is Something Air blows out for a while after This is not a malfunction. is wrong HEAT operation is stopped. The blower is operating just for cooling down the also applied to the models with the heated-up air conditioner.
  • Page 47 Phone Calls From Customers How to Respond Note A white mist is expelled from the indoor unit. This is not a malfunction. This may occur when the operation gets started in the room of high humidity. Water or moisture is expelled from the outdoor Cooling;...
  • Page 48 10-6. HOW TO CHECK THE PARTS PUHZ-RP200YHA2 PUHZ-RP250YHA2 Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. <Outdoor pipe> (At the ambient temperature 10 ~30 ) Thermistor (TH4) <Discharge> Normal Abnormal Thermistor (TH6) <Outdoor 2-phase pipe>...
  • Page 49 Check method of DC fan motor (fan motor / outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. board and fan motor.) (It causes trouble of the outdoor controller circuit Self check...
  • Page 50 10-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Outdoor 2-phase pipe> (TH6) • Thermistor <Outdoor> (TH7) Thermistor R0 = 15k ± 3% B constant = 3480 ± 2% =15exp{3480( 273+t – 273 )} 4.3k 9.6k 3.0k...
  • Page 51 Linear expansion valve (RP200) (1) Operation summary of the linear expansion valve • Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller board and the linear expansion valve>...
  • Page 52 Linear expansion valve (RP250) (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 53 (3) How to attach and detach the coil of linear expansion valve(RP200) <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Stopper Coil Lead wire <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 54 (4) How to attach and detach the coil of linear expansion valve(RP250) <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 55: Emergency Operation

    10-8. 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 board.
  • Page 56 (5) Operation data during emergency operation During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values: Operation mode Remarks Operation data COOL HEAT 20.5 Room temperature (TH1) —...

  • Page 57: Test Point Diagram Outdoor Controller Circuit Board

    10-9. TEST POINT DIAGRAM <CAUTION> TEST POINT is high voltage. Outdoor controller circuit board PUHZ-RP200YHA2 PUHZ-RP250YHA2 Forced defrost, detect history record reset, Demand control setting refrigerant address CN51 External signal output Model select • Compressor operating signal • Abnormal signal...
  • Page 58 Outdoor noise filter circuit board PUHZ-RP200YHA2 PUHZ-RP250YHA2 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 outdoor controller circuit board (CNAC))
  • Page 59 If they are short-circuited, it means that they are broken. 1. Check of POWER MODULE PUHZ-RP250YHA2 .Check of DIODE circuit L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1 .Check of IGBT circuit...

  • Page 60: Function Of Switches, Connectors And Jumpers

    10-10. 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 Forced defrost 1 Start Normal in heating operation. Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6 1 2 3 4 5 6...
  • Page 61 (2) Function of connectors and switches Action by open/ short operation Connector Types Function Effective timing Switch Short Open Connector CN31 Start When power supply ON Emergency operation Normal SW6-1 SW6-2 MODEL SW5-6 SW6-3 200Y SW6-4 1 2 3 4 5 6 7 8 1 2 3 4 5 6 Model select SW6-5...
  • Page 62 <Display function of inspection for outdoor unit> The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SK52ST)” to connector CNM on outdoor controller board.
  • Page 63 Indication Error Outdoor controller board Error Detailed Contents Inspection method reference code LED1 (Green) LED2 (Red) page Check if stop valves are open. 3 blinking 1 blinking Abnormality of discharging P.30 Check if connectors (TH4, LEV-A and LEV-B) on outdoor controller temperature (TH4) board are not disconnected.
  • Page 64 <Outdoor unit operation monitor function> [When optional part “A-Control Service Tool(PAC-SK52ST)” is connected to outdoor controller board(CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on “A-Control Service Tool”. Operation indicator SW2 : Indicator change of self diagnosis SW2 setting...
  • Page 65 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) When -10 ; 2 3 4 5 6 0.5 secs.
  • Page 66 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. 0.5secs.
  • Page 67 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 Code RP200 display...
  • Page 68 Explanation for display Unit SW2 setting Display detail Indoor setting temperature 17~30 17~30 2 3 4 5 6 Outdoor pipe temperature / 2-phase -39~88 (TH6) (When the temperature is 0 or less, “–” and -39~88 temperature are displayed by turns.) 2 3 4 5 6 Outdoor ambient temperature (TH7) -39~88...
  • Page 69 Explanation for display Unit SW2 setting Display detail 0~255 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) When 100%; M-NET and capacity save mode is 0.5 secs.
  • Page 70 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) When 130 pulse; Pulse 0.5 secs. 0.5secs.
  • Page 71 Explanation for display Unit SW2 setting Display detail 0~255 Discharge superheat 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) When 150°C; Cooling = TH4-TH6 0.5 secs. 0.5secs.

  • Page 72: Condensing Temperature

    SW2 setting Display detail Explanation for display Unit 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 73: Function Setting

    FUNCTION SETTING 11-1. 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. (1) Functions available when setting the unit number to 00 (Select 00 referring to set the indoor unit number.) 1 The functions below are available only when the wired remote controller is used.
  • Page 74 (2) Functions available when setting the unit number to 01-04 or AL (07 in case of wireless remote controller) • When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to setting the unit number of Operating Procedure.
  • Page 75 11-1-1. 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 is given. For actual operations, refer to steps Setting number Refrigerant address Unit number...
  • Page 76 [Operating Procedure] Check the setting items provided by function selection. If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps , fill in the "Check" column in Table 1, then change them as necessary. For initial settings, refer to the indoor unit's installation manual. Switch off the remote controller.
  • Page 77 11-1-2. 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 78 11-2. FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed. Item 1 Item 2 Item 3 (Setting content) 1.Change language Language setting to display •...
  • Page 79 [Function selection flowchart] Normal display (Display when the air conditioner is not running) Setting language (English) Hold down the button and press the button for 2 seconds. Hold down the button and press the button for 2 seconds. Press the operation mode button. Press theTIMER MENU button.

  • Page 80: Monitoring The Operation Data By The Remote Controller

    MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 12-1. HOW TO "MONITOR THE OPERATION DATA" • Turning on the [Monitoring the operation data] Example) Request code "004" Refrigerant address "00" A: Maintenance mode B: Refrigerant address C: Data display area D: Request code display area (1) Press the button for 3 seconds so that [ Maintenance mode] appears on the screen (at...
  • Page 81 12-2. REQUEST CODE LIST * Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Description Request content Unit Remarks (Display range) Operation state Refer to 12-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0 –...
  • Page 82 Description Request content Unit Remarks (Display range) Indoor unit-Control state – Refer to 12-2-1.Detail Contents in Request Code. Outdoor unit-Control state – Refer to 12-2-1.Detail Contents in Request Code. Compressor-Frequency control state Refer to 12-2-1.Detail Contents in Request Code. – Outdoor unit-Fan control state Refer to 12-2-1.Detail Contents in Request Code.
  • Page 83 Description Request content Unit Remarks (Display range) Error history 1 (latest) Displays error history. (" - - " is displayed if no history is present.) Code Error history 2 (second to last) Displays error history. (" - - " is displayed if no history is present.) Code Error history 3 (third to last) Displays error history.
  • Page 84 Description Request content Unit Remarks (Display range) Indoor-Fan operating time 0 – 9999 1 hour (After filter is reset) Indoor-Total operating time 0 – 9999 10 hours (Fan motor ON time) Indoor fan output value (Sj value) 0 – 255 Fan control data –...
  • Page 85 12-2-1. Detail Contents in Request Code Example) Request code "004" Discharge temperature 69 Refrigerant address "00" A: Maintenance mode display B: Refrigerant address C: Data display area D: Request code display area [Operation state] (Request code ": 0 ") Relay output state Power currently Data display Display...
  • Page 86 [Fan control state] (Request code :" 53 ") Data display Fan step correction value by heatsink temperature overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display Correction value - (minus) – 1 [Actuator output state] (Request code :"54") Data display Actuator output state Actuator output state...
  • Page 87 [Contact demand capacity] (Request code "61") Setting content Data display Setting Display Setting value Setting content SW7-1 SW7-2 100% [External input state] (Request code "62") Input state : Input present Data display Contact demand Silent mode Spare 1 Spare 2 Display Input state input...
  • Page 88 [Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82 0: Swich OFF 1: Swich ON 0: Swich OFF 1: Swich ON SW1, SW2, SW6, SW7 Data display Data display 00 00 00 00 00 01 00 01 00 02 00 02...
  • Page 89 [Indoor unit – Model setting information] (Request code : 162) Data display Display Model setting state Display Model setting state PSA-RP·GA, PSH-PGAH PKA-RP·FAL(2), PKH-P·FALH See the table on the right. PEAD-RP·EA(2)/GA, PEHD-P·EAH PCA-RP·GA(2), PCH-P·GAH, PLA-RP·BA SEZ-KA·VA SLZ-KA·VA(L) PCA-RP·HA PEA-RP400/500GA PEA-RP200/250GA PKA-RP·GAL, PKH-P·GALH PLA-RP·...

  • Page 90: Easy Maintenance Function

    EASY MAINTENANCE FUNCTION Reduces maintenance work drastically. Enables you to check operation data of the indoor and outdoor units by remote controller. Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even for inverter models. Smooth Mainte- Discharge temperature 64 Conventional inspection work...
  • Page 91 Data measurement When the operation is stabilized, measure operation data as explained below. (4) Press the [TEMP] buttons ( ) to select the desired refrigerant address. [Screen (5) Select the type of data to be displayed. After selecting, go to step (6). Compressor information button MENU...
  • Page 92 13-2. GUIDE FOR OPERATION CONDITION Inspection item Result Check Points Breaker Good Retightened Enter the temperature differences between into Terminal block Outdoor Unit Good Retightened the graph given below. Indoor Unit Good Retightened Operation state is determined according to the plotted areas on (Insulation resistance) the graph.

  • Page 93: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-RP200YHA2 PUHZ-RP250YHA2 OPERATING PROCEDURE PHOTOS & ILLUSTRATION Figure 1 1. Removing the service panel and top panel Top panel fixing screws Top panel (1) Remove 3 service panel fixing screws (5 × 10) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 94 (TH6), since they are combined together. Refer to No.5 above to remove thermistor <Outdoor 2-phase pipe>. Photo 6 (Photo:PUHZ-RP250YHA2) 6. Removing the thermistor <Outdoor pipe> (TH3) and ther- mistor <Discharge> (TH4) (1) Remove the service panel. (See figure 1.) Thermistor <Outdoor pipe>...
  • Page 95 OPERATING PROCEDURE PHOTOS Photo 7 (Photo:PUHZ-RP200YHA2) 7. Removing the 4-way valve coil (21S4) and linear expan- sion valve coil (LEV-A, LEV-B) and bypass valve coil(SV) (1) Remove the service panel. (See figure 1.) Bypass valve coil fixing (2) Remove the top panel. (See figure 1.) screw 4-way valve (3) Remove the electrical parts box .
  • Page 96 OPERATING PROCEDURE PHOTOS 10. Removing the high pressure switch (63H)(63H1)(63H2) Photo 8 (Photo:PUHZ-RP200YHA2) and the 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 panel.
  • Page 97 OPERATING PROCEDURE PHOTOS 12. Removing the accumulator(RP200) Photo 10 (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. (4) Remove 2 back cover panel fixing screws (5 ×...
  • Page 98 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN New publication, effective Nov. 2007 Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Specifications subject to change without notice Distributed in Nov. 2007 No.OCH428 PDF 8 Made in Japan...

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