Mitsubishi Electric Mr. Slim PKA-A36KA4 User Manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
Note:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
CONTENTS
1. REFERENCE MANUAL
...................................
2
2. SAFETY PRECAUTION
...................................
3
3. PART NAMES AND FUNCTIONS
...................
4
4. SPECIFICATIONS
............................................
7
5. NOISE CRITERION CURVES
..........................
8
6. OUTLINES AND DIMENSIONS
.......................
9
7. WIRING DIAGRAM
.........................................
10
8. REFRIGERANT SYSTEM DIAGRAM
............
11
9. TROUBLESHOOTING
....................................
12
10. SPECIAL FUNCTION
.....................................
26
11. DISASSEMBLY PROCEDURE
.......................
29
PARTS CATALOG (OCB488)
No. OCH488
REVISED EDITION-A
May 2011
ON/OFF
TEMP.
9700058
WIRED REMOTE
CONTROLLER
(Option)
INDOOR UNIT
Indoor unit
[Model names] [Service Ref.]
PKA-A24KA4
PKA-A24KA4.TH
PKA-A30KA4
PKA-A30KA4.TH
PKA-A36KA4
PKA-A36KA4.TH
IR WIRELESS REMOTE
CONTROLLER
(Option)
ON/OFF TEMP
Revision:
• 6. OUTLINES AND
DIMENSIONS has been modi-
fied in REVISED EDITION-A.
• Some descriptions have been
modified.
• Please void OCH488.

Mitsubishi Electric Mr. Slim PKA-A36KA4 Specifications

General

Brand	Mitsubishi Electric
Model	Mr. Slim PKA-A36KA4
Category	Air Conditioner
Language	English

Summary

Reference Manual

Remote Controller Options

Details about optional remote controllers for the air conditioning unit, including wired and wireless types.

Safety Precautions

General Safety Precautions

Essential safety guidelines to follow before accessing or servicing the unit's electrical circuits.

R410A Refrigerant Handling Cautions

Specific warnings and precautions for working with R410A refrigerant, including tools and procedures.

Part Names and Functions

Indoor Unit Components Overview

Identification and brief description of the main parts of the indoor unit.

Specifications

Noise Criterion Curves

Outlines and Dimensions

Wiring Diagram

Refrigerant System Diagram

Troubleshooting

Troubleshooting Summary

Overview of error code display, self-diagnosis actions, and general troubleshooting steps.

Malfunction Diagnosis via Remote Controller

Procedures for diagnosing malfunctions using IR wireless and wired remote controllers.

Self-Diagnosis Action Table

Table detailing error codes, causes, and countermeasures for self-diagnosis.

Troubleshooting by Inferior Phenomena

Troubleshooting steps for specific unit phenomena like vane issues or remote controller receiver problems.

Emergency Operation Procedures

How to operate the unit in emergency mode when the remote controller fails or is exhausted.

Component Testing Procedures

Methods for checking the condition of key parts like thermistors, vane motors, and fan motors.

Indoor Controller Board Test Points

Diagram showing test points on the indoor controller board for voltage measurements.

Dip Switch and Jumper Wire Functions

Explanation of settings and functions controlled by dip switches and jumper wires on the control board.

Special Function

Rotation and Backup Functionality

Details on how the rotation and backup functions operate for multi-unit systems.

Back-up Heating Function

Information on the back-up heater signal based on temperature difference for heating operations.

Disassembly Procedure

Front Panel Removal

Step-by-step instructions for safely removing the front panel of the indoor unit.

Controller Board Removal

Procedure for removing the indoor controller board and the IR wireless remote controller board.

Electrical Box Removal

Steps to remove the electrical box housing the indoor controller and terminal blocks.

Nozzle Assembly and Drain Hose Removal

Instructions for removing the nozzle assembly, vane motor, and drain hose.

Fan Motor and Fan Assembly Removal

Procedure for removing the indoor fan motor and the line flow fan assembly.

Thermistor Removal

Steps to remove the liquid pipe and condenser/evaporator pipe thermistors.

Heat Exchanger Removal

Detailed steps for removing the heat exchanger from the indoor unit.

Room Temperature Thermistor Removal

Procedure for removing the room temperature thermistor (TH1).