Mitsubishi Electric PKA-A36KA6.TH User Manual

SERVICE MANUAL
Notes:
 This manual describes service
data of the indoor units only.
 RoHS compliant products
have <G> mark on the spec
name plate.
CONTENTS
1. REFERENCE MANUAL
...................................
2
2. SAFETY PRECAUTION
...................................
3
3. PARTS NAMES AND FUNCTIONS
.................
4
4. SPECIFICATIONS
...........................................
10
5. NOISE CRITERION CURVES
.........................
11
6. OUTLINES AND DIMENSIONS
......................
12
7. WIRING DIAGRAM
.........................................
13
8. REFRIGERANT SYSTEM DIAGRAM
............
14
9. TROUBLESHOOTING
....................................
15
10. SPECIAL FUNCTION
.....................................
29
11. DISASSEMBLY PROCEDURE
.......................
32
PARTS CATALOG (OCB584)
No. OCH584
December 2014
WIRED REMOTE
CONTROLLER
(Option)
INDOOR UNIT
Indoor unit
[Model Name] [Service Ref.]
PKA-A24KA6
PKA-A24KA6.TH
PKA-A30KA6
PKA-A30KA6.TH
PKA-A36KA6
PKA-A36KA6.TH
IR WIRELESS REMOTE
CONTROLLER
(Option)
ON/OFF TEMP
SPLIT-SYSTEM HEAT PUMP

Mitsubishi Electric PKA-A36KA6.TH Specifications

General

Type	Heat Pump
Cooling Capacity	3.6 kW
Refrigerant	R410A
Power Source	220-240 V, 50 Hz
Noise Level (Outdoor Unit)	50 dB(A)
Outdoor Unit Dimensions (HxWxD)	550x800x300 mm

Summary

SAFETY PRECAUTIONS

General Safety Observance

Essential safety rules before starting any service work.

R410A Refrigerant Cautions

Specific safety guidelines for handling R410A refrigerant.

SPECIFICATIONS

Model Specifications

WIRING DIAGRAM

Model Wiring Diagrams

REFRIGERANT SYSTEM DIAGRAM

Model Refrigerant Flow Diagram

TROUBLESHOOTING

9-1. Troubleshooting Summary

Overview of self-diagnosis and actions for recurring issues.

9-2. Malfunction Diagnosis & Error Codes

Methods for diagnosing malfunctions, check codes, symptoms, and tables.

9-3. Self-Diagnosis Action Table

Detailed table of check codes, causes, and countermeasures.

Specific Error Troubleshooting

Details on specific errors (P6, P8, P9, PA, E0-E7, etc.).

SPECIAL FUNCTION

DISASSEMBLY PROCEDURE

1. Removing the Panel

Step-by-step guide to remove the front panel.

2. Removing Controller Boards

Steps to remove indoor and wireless remote controller boards.

3. Removing the Electrical Box

4. Removing Nozzle Assembly and Drain Hose

5. Removing the Vane Motor

6. Removing Fan Motor and Line Flow Fan

7. Removing Thermistors

8. Removing the Heat Exchanger

9. Removing Room Temperature Thermistor