Mitsubishi PLA-ZM35EA.UK Service Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SPLIT-TYPE, AIR CONDITIONERS

SERVICE MANUAL

Indoor unit

[Model Name]

[Service Ref.]

PLA-ZM35EA.UK

PLA-ZM35EA

PLA-ZM50EA.UK

PLA-ZM50EA

PLA-ZM60EA.UK

PLA-ZM60EA

PLA-ZM71EA.UK

PLA-ZM71EA

PLA-ZM100EA.UK

PLA-ZM100EA

PLA-ZM125EA.UK

PLA-ZM125EA

PLA-ZM140EA.UK

PLA-ZM140EA

Grille model

[Model Name]

[Service Ref.]

PLP-6EA

PLP-6EAE

PLP-6EAL

PLP-6EALE

PLP-6EAJ

PLP-6EAJE

PLP-6EALM

PLP-6EALME

Model name

indication for

MAIN UNIT

INDOOR UNIT

R32/R410A

PLP-6EAR1

PLP-6EAER1

PLP-6EALR1

PLP-6EALER1

CONTENTS

1. REFERENCE MANUAL ................................... 2

2. SAFETY PRECAUTION ................................... 3

3. PARTS NAMES AND FUNCTIONS ................. 8

4. SPECIFICATIONS ........................................... 13

5. NOISE CRITERION CURVES ......................... 16

6. OUTLINES AND DIMENSIONS ...................... 18

7. WIRING DIAGRAM ......................................... 19

8. REFRIGERANT SYSTEM DIAGRAM ............ 20

9. TROUBLESHOOTING .................................... 21

10. FUNCTION SETTING ..................................... 36

11. SPECIAL FUNCTION ..................................... 37

12. DISASSEMBLY PROCEDURE ....................... 43

Model name

indication for GRILLE

March 2017

No. OCH650

Notes:

• This manual describes ser-

vice data of the indoor units

only.

• RoHS compliant products

have <G> mark on the spec

name plate.

PARTS CATALOG (OCB650)

Table of Contents

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Summary of Contents for Mitsubishi PLA-ZM35EA.UK

Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS March 2017 No. OCH650 SERVICE MANUAL R32/R410A Indoor unit [Model Name] [Service Ref.] PLA-ZM35EA.UK PLA-ZM35EA Notes: • This manual describes ser- PLA-ZM50EA.UK PLA-ZM50EA vice data of the indoor units PLA-ZM60EA.UK only. PLA-ZM60EA •...
Page 2: Reference Manual
REFERENCE MANUAL OUTDOOR UNIT’S SERVICE MANUAL Model Name Service Ref. Service Manual No. PUHZ-ZRP35/50VKA2 PUHZ-ZRP35/50VKA2(-ER/ET) OCH635/OCB635 PUHZ-ZRP60/71VHA2 PUHZ-ZRP60/71VHA2(-ER/ET) PUHZ-ZRP100/125/140VKA3 PUHZ-ZRP100/125/140/VKA3.UK PUHZ-ZRP100/125/140YKA3 PUHZ-ZRP100/125/140/YKA3.UK OCH645/OCB645 PUHZ-ZRP200/250YKA2 PUHZ-ZRP200/250YKA2.UK PUHZ-SHW112VHA PUHZ-SHW112VHAR4.UK OCH526/OCB526 PUHZ-SHW112/140YHA PUHZ-SHW112/140YHAR4.UK PUHZ-SHW230YKA2 PUHZ-SHW230YKA2 OCH594/OCB594 PUZ-ZM35/50VKA PUZ-ZM35/50VKA OCH653/OCB653 PUZ-ZM60/71VHA PUZ-ZM60/71VHA PUZ-ZM100/125/140VKA PUZ-ZM100/125/140VKA.UK OCH654/OCB654 PUZ-ZM100/125/140YKA PUZ-ZM100/125/140YKA.UK...
Page 3: Safety Precaution
SAFETY PRECAUTION MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit. WARNING Read the OPERATION MANUAL carefully before operation. Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation. Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
Page 4 [1] Warning for service (1) Do not alter the unit. (2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual. (3) Ask a dealer or an authorized technician to install, relocate and repair the unit.
Page 5 [4] Cautions for unit using R32 refrigerant Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful attention to the following points. (1) Information on servicing (1-1) Checks on the Area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized.
Page 6 (3) Repair to intrinsically Safe Components Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use. Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmos- phere.
Page 7 a) Become familiar with the equipment and its operation. b) Isolate system electrically. c) Before attempting the procedure, ensure that: • mechanical handling equipment is available, if required, for handling refrigerant cylinders; • all personal protective equipment is available and being used correctly; •...
Page 8: Parts Names And Functions
Unit Electronic weighing scale [5] Service tools Use the below service tools as exclusive tools for R32/R410A refrigerant. Refer to the spec name plate on outdoor unit for the type of refrigerant being used. Tool name Specifications · Use the existing fitting specifications . (UNF1/2) Gauge manifold ·...
Page 9 3-2. WIRELESS REMOTE CONTROLLER (Option) Transmission area Not available Remote controller display Battery replacement indicator Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airflow button (Changes up/down airflow direction) i-see button Timer ON button Menu button Timer OFF button SET/SEND button...
Page 10: Basic Mode
3-3. Wired remote controller (Option) PAR-32MAA The functions which can be used are restricted according to each model. The main display can be displayed in 2 different modes: "Full" and "Basic." Display The initial setting is "Full." 1 Operation mode Indoor unit operation mode appears here.
Page 11 Menu structure Press the button. MENU Move the cursor to the desired item with the buttons, and press the button. Main menu SELECT Vane · Louver · Vent. (Lossnay) High power Timer ON/OFF timer Auto-OFF timer Weekly timer Restriction Temp. range Operation lock Energy saving Auto return...
Page 12 Setting and display items Setting details Vane · Louver · Vent. Use to set the vane angle. • Select a desired vane setting from 5 different settings. (Lossnay) Use to turn ON/OFF the louver. • Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation.
Page 13: Specifications
SPECIFICATIONS Service Ref. PLA-ZM35EA.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230 V Input 0.03 0.03 Running current 0.21 0.19 External finish (Grille) Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan (drive) o No. Turbo fan (direct) o 1 Fan motor output 0.050...
Page 14 Service Ref. PLA-ZM71EA.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230 V Input 0.05 0.05 Running current 0.34 0.32 External finish (Grille) Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan (drive) o No. Turbo fan (direct) o 1 Fan motor output 0.120 K/min...
Page 15 Service Ref. PLA-ZM140EA.UK Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230 V Input 0.10 0.10 Running current 0.66 0.64 External finish (Grille) Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan(drive) o No. Turbo fan (direct) o 1 Fan motor output 0.120 K/min...
Page 16: Noise Criterion Curves
NOISE CRITERION CURVES PLA-ZM35EA.UK PLA-ZM50EA.UK NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High PLA-ZM60EA.UK Medium1 Medium1 Medium2 Medium2 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20...
Page 17 PLA-ZM140EA.UK PLA-ZM125EA.UK NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High Medium1 Medium1 Medium2 Medium2 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE NOISE 8000 1000 2000...
Page 18: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLA-ZM35EA.UK PLA-ZM50EA.UK PLA-ZM60EA.UK PLA-ZM71EA.UK PLA-ZM100EA.UK PLA-ZM125EA.UK PLA-ZM140EA.UK Unit: mm OCH650...
Page 19: Wiring Diagram
WIRING DIAGRAM PLA-ZM35EA.UK PLA-ZM50EA.UK PLA-ZM60EA.UK PLA-ZM71EA.UK PLA-ZM100EA.UK PLA-ZM125EA.UK PLA-ZM140EA.UK [LEGEND] SYMBOL NAME SYMBOL NAME <Table 1> SW1 (MODEL SELECTION) Manufacture/Service MODELS INDOOR CONTROLLER BOARD TERMINAL BLOCK (INDOOR/OUTDOOR 1 2 3 4 5 6 CN2L CONNECTOR (LOSSNAY) CONNECTING LINE) PLA- ZM.EA...
Page 20: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM REFRIGERANT SYSTEM DIAGRAM PLA-ZM35EA.UK PLA-ZM50EA.UK PLA-ZM60EA.UK PLA-ZM71EA.UK PLA-ZM100EA.UK PLA-ZM125EA.UK PLA-ZM140EA.UK Strainer (#50) Heat exchanger Refrigerant GAS pipe connection (Flare) Thermistor TH5 (Cond./eva.temperature) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Thermistor TH2...
Page 21: Troubleshooting
TROUBLESHOOTING 9-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the wired remote controller or controller board of out- door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa- rized in the table below.
Page 22: High
Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep 2 nd 3 rd n th 2 nd 1 st OPERATION 1 st · · · Repeated INDICATOR lamp blinking pattern...
Page 23 • If the unit cannot be operated properly after the test run, refer to the following table to find out the cause. Symptom Cause Wired remote controller • For about 2 minutes after power-on,operation of the For about 2 minutes after power-on PLEASE WAIT remote controller is not possible due to system startup.
Page 24 Note: Errors to be detected in outdoor unit, such as codes starting with F, U or E (excluding E0 to E7), are not covered in this document. 9-3. SELF-DIAGNOSIS ACTION TABLE Please refer to the outdoor unit's service manual for the details. Abnormal point and detection method Countermeasure Check code...
Page 25 Abnormal point and detection method Countermeasure Check code Cause 1 Malfunction of drain pump 1 Check if drain pump works. Drain pump lock protection operation 2 Clogged drain pump 1 Error postponement, if drain pump stops 2 Check if drain pump works. 3 Contact failure of connector for 5 seconds continuously while drain 3 Check contact failure of connector CNP...
Page 26 Abnormal point and detection method Countermeasure Check code Cause 1 Defective thermistor Pipe temperature thermistor/ characteristics 1–3 Check resistance value of thermistor. Condenser-Evaporator (TH5) For characteristics, refer to (P1) above. 1 The unit is in 3-minute resume protec- 2 Contact failure of connector 2 Check contact failure of connector (CN44) tion mode if short/open of thermistor is (CN44) on the indoor controller...
Page 27 Abnormal point and detection method Countermeasure Check code Cause 1 Contact failure, short circuit or, Note: Check LED display on the outdoor control Indoor/outdoor unit communication error miswiring (converse wiring) of circuit board. (Connect A-control service (Signal receiving error) 1 Abnormal if indoor controller board tool, PAC-SK52ST.) indoor/outdoor unit connecting cannot receive any signal normally for 6...
Page 28 Abnormal point and detection method Countermeasure Check code Cause 1 Defective fan motor 12 Refer to "9-6-2. DC Fan Motor (fan motor/ Fan motor trouble 2 Defective indoor controller board indoor controller board)". Abnormal refrigerant circuit 1 Abnormal operation of 4-way 1 When this error occurs, be sure to replace During Cooling, Dry, or Auto Cooling valve...
Page 29 9-4. TROUBLESHOOTING OF PROBLEMS Note: Refer to the outdoor unit's service manual for the detail of remote controller. Phenomena Cause Countermeasure • When LED1 on indoor controller board is also off. (1) LED2 on indoor controller board 1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power is off.
Page 30 Note: Refer to the outdoor unit's service manual for the detail of remote controller. Phenomena Cause Countermeasure • When LED1 on indoor controller board is also blinking. Check indoor/outdoor unit connecting wire (2) LED2 on indoor controller board Connection failure of indoor/outdoor unit connecting for connection failure.
Page 31: High
9-5. EMERGENCY OPERATION 9-5-1. When wireless remote controller fails or its battery is exhausted When the remote controller cannot be used When the batteries of the remote controller run out or the remote control- ler malfunctions, the emergency operation can be done using the emer- gency buttons on the grille.
Page 32 9-6. HOW TO CHECK THE PARTS PLA-ZM35EA.UK PLA-ZM50EA.UK PLA-ZM60EA.UK PLA-ZM71EA.UK PLA-ZM100EA.UK PLA-ZM125EA.UK PLA-ZM140EA.UK Parts name Check method and criterion Room temperature Measure the resistance with a tester. thermistor (TH1) (Parts temperature 10 to 30°C) Pipe temperature Abnormal Normal thermistor/liquid (TH2) Opened or short-circuited 4.3 to 9.6 k"...
Page 33 9-6-1. Thermistor < Thermistor for lower temperature > <Thermistor Characteristic Graph> Room temperature thermistor (TH1) Thermistor for Pipe temperature thermistor/liquid (TH2) lower temperature Condenser/evaporator temperature thermistor (TH5) Thermistor R =15k" ± 3% Fixed number of B=3480 ± 2% Rt=15exp { 3480( 273+t 15 k"...
Page 34 9-7. TEST POINT DIAGRAM Indoor controller board PLA-ZM35EA.UK PLA-ZM50EA.UK PLA-ZM60EA.UK PLA-ZM71EA.UK PLA-ZM100EA.UK PLA-ZM125EA.UK PLA-ZM140EA.UK CN5Y i-see Sensor motor (MT) Vane motor (MV) Connect to wired remote controller 12 V pulse output 12 V pulse output 10.4–14.6 V DC Model selection...
Page 35 9-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the DIP switch and the jumper wire on the indoor controller board. The black square (■) indicates a switch position Jumper wire ( : Short : Open) Jumper wire Setting by the DIP switch and jumper wire Functions...
Page 36: Function Setting
FUNCTION SETTING 10-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set as necessary using the remote controller. The setting of function for each unit can only be done by the remote controller. (1) Functions available when setting the unit number to 00 Refer to the service manual that comes with each outdoor unit.
Page 37: Special Function
SPECIAL FUNCTION 11-1. OPERATION (AUTOMATIC FILTER ELEVATION GRILLE: PLP-6EAJ/PLP-6EAJE) (1) Normal operation String 1b 1 UP/DOWN UP/DOWN UP/DOWN Air intake grille is raised/lowered by Machine 1 Machine 2 commands of UP and DOWN. Air intake grille does not move under the state of no-load detection or obstacle detection.
Page 38 11-2. ELECTRICAL CIRCUIT (Controller board and wiring diagram (Panel)) 11-2-1 DIP SW LED4 LED2 [ LEGEND ] SYMBOL NAME [EMERGENCY OPERATION] ELEVATION PANEL CONTROLLER BOARD 1. If the wireless remote controller for ELEVATION PANEL is faulty or lost, operation LED ORANGE LED2 will be possible using the emergency up/down switch at the wireless signal receiver (INTAKE GRILLE CONDITION (See table *1))
Page 39 11-3. TROUBLESHOOTING • Check the following points. Problem Possible Reason Corrective Action Intake grille does not function Air-conditioner is running. Stop running the air-conditioner and try again. After recovering from power failure, try again. Power failure. with operation of the remote Batteries are not inserted into the wireless remote Install or replace the battery.
Page 40: Main Unit
11-4. ROTATION FUNCTION (AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) 11-4-1. Operation (1) Rotation function (and Back-up function) • Outline of functions · Main and sub unit operate alternately according to the interval of rotation setting. Note: Main and sub unit should be set by refrigerant address. (Outdoor DIP switch setting) Refrigerant address "00"...
Page 41: Main Unit
• System constraint · This function is available only in cooling mode. Ex.) Set temp. by R/C = 20: [2nd stage cut-in function]··· Request code number "322–324" Set point = 26: When request code number is “323”. Room temp. ] Set point Room temp.
Page 42 (2) Rotation and back up operation PAR-3xMAA ("x" represents 0 or later) Press the button. Main Main menu Maintenance Initial setting Service Select "Service" with the [Cursor] buttons ( ) or the [Page] buttons ( ), and press the button. Main display: Cursor Page...
Page 43: Disassembly Procedure
DISASSEMBLY PROCEDURE PLA-ZM35EA.UK PLA-ZM50EA.UK PLA-ZM60EA.UK PLA-ZM71EA.UK PLA-ZM100EA.UK PLA-ZM125EA.UK PLA-ZM140EA.UK Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS Knob Air intake grille 1. Removing the filter (1) Slide the knob of air intake grille toward the arrow to...
Page 44 OPERATING PROCEDURE PHOTOS 4. Removing the room temperature thermistor (TH1) Photo 3 (1) Remove the electrical box cover. (See Photo 1 and 2) Room temperature thermistor (TH1) (2) Disconnect the connector CN20 (Red) from the indoor Electrical box controller board. Indoor controller (3) Remove the room temperature thermistor with its board...
Page 45 Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS Bell mouth fixing screws 6. Removing the electrical box (1) Remove the electrical box cover (See Photo 1 and 2) Photo 6 and the connectors (Refer to procedure 5). (2) Remove the electrical box fixing screws (M5×10: 2 screw).
Page 46 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 9. Removing the panel Figure 4 (1) Remove the electrical box fixing cover. (See Photo 1) Corner panel (2) Disconnect the connector for vane motor (CNV: White). Screw (Refer to procedure 5) (3) Loosen the 4 corner panel fixing screws (tapping screw ①...
Page 47 OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 11. Removing the pipe temperature/liquid thermistor (TH2) Photo 14 and condenser/evaporator temperature thermistor (TH5) (1) Remove the drain pan (Refer to procedure 10) and loosen the 2 clamps of the coil plate. (See Photo 10) (2) Remove the coil plate (tapping screw 4×10: 2 screws).
Page 48 OPERATING PROCEDURE PHOTOS Do not hold this floating part Photo 16 13. Removing the float switch (FS) when lifting; Doing so will cause (1) Remove the drain pan. (Refer to procedure 10) malfunction. (2) Loosen the clamp of the drain pump. (See Photo 15) (3) Remove the float switch (tapping screw 4×10: 1 screw/1 hook).
Page 49 OCH650...
Page 50 HEAD OFFICE : TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2017 MITSUBISHI ELECTRIC CORPORATION Published: Mar. 2017 No.OCH650 Specifications are subject to change without notice. Made in Japan...

This manual is also suitable for:

Pla-zm60ea.uk Pla-zm50ea.uk Pla-zm100ea.uk Pla-zm125ea.uk Pla-zm140ea.uk Plp-6ea ... Show all

Mitsubishi PLA-ZM35EA.UK Service Manual

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