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Mitsubishi Electric PLH-4GKHSB User Manual

Mitsubishi Electric PLH-4GKHSB
84 pages
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TECHNICAL & SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. FEATURES ···········································3
2. PART NAMES AND FUNCTIONS········5
3. SPECIFICATIONS·································7
4. DATA ···················································11
5. OUTLINES AND DIMENSIONS··········15
6. WIRING DIAGRAM·····························18
7.
REFRIGERANT SYSTEM DIAGRAM
······19
8. OPERATION FLOW-CHART··············20
9. MICROPROCESSOR CONTROL·······24
10. TROUBLESHOOTING························47
11. 4-WAY AIR FLOW SYSTEM···············55
12. SYSTEM CONTROL···························60
13. DISASSEMBLY PROCEDURE···········65
14. PARTS LIST········································68
15. OPTIONAL PARTS ·····························78
[Model names]
PLH-3GK(H)B
PLH-4GK(H)SB
PLH-5GK(H)SB
PLH-6GK(H)SB
No. OC148
1997
This manual does not cover the following
outdoor units. When servicing them,
please refer to the service manual
No.OC150 and this manual in a set.
[Service Ref.]
PUH-3YKA2.UK
PUH-3VKA2.UK
PUH-4YKSA2.UK
PUH-5YKSA2.UK
PUH-6YKSA2.UK
INDOOR UNIT
Ceiling Cassettes
Series PLH
FILTER
CHECK MODE
TEST RUN
REMOTE CONTROLLER
The Slim Line.
From Mitsubishi Electric.
[Service Ref.]
PLH-3GK(H)B
1
.UK
PLH-4GK(H)SB
1
.UK
PLH-5GK(H)SB
1
.UK
PLH-6GK(H)SB
1
.UK
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Mitsubishi Electric PLH-4GKHSB Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPLH-4GKHSB
CategoryAir Conditioner
LanguageEnglish

Summary

Technical Specifications

Indoor Unit Specifications

Details electrical, physical, and performance specifications for indoor units.

Outdoor Unit Specifications

Details electrical, physical, and performance specifications for outdoor units.

Performance Data

Cooling Capacity Performance Data

Provides cooling capacity data based on various indoor/outdoor conditions.

Heating Capacity Performance Data

Provides heating capacity data based on various indoor/outdoor conditions.

Electrical Data

Indoor Unit Electrical Data

Electrical specifications for indoor units across different voltages.

Outdoor Unit Electrical Data

Electrical specifications for outdoor units based on voltage and phase.

Standard Operation Data

Electrical and Refrigerant Circuit Data

Standard operation data for electrical circuits and refrigerant properties.

Wiring Diagram

Wiring Diagram and Notes

Illustrates wiring connections and provides important notes for installation.

Refrigerant System Diagram

Refrigerant System Diagrams

Visual representation of the refrigerant circuit for different models.

Operation Flow-Chart

Main Operation Flowchart

Illustrates the main operational logic and decision points.

Cooling Operation

Cooling Operation Flowchart

Detailed flowchart for the cooling operation mode.

Dry Operation

Dry Operation Flowchart

Detailed flowchart for the dry operation mode.

Heating Operation

Heating Operation Flowchart

Detailed flowchart for the heating operation mode.

Microprocessor Control

Microprocessor Control Outline

Overview of the microprocessor control system and its components.

Indoor Unit Control

2-1 COOL operation

Details the indoor unit's cooling operation cycle and controls.

2-2 DRY OPERATION

Details the indoor unit's dry operation cycle and controls.

2-3 HEAT OPERATION

Details the indoor unit's heating operation cycle and controls.

2-4 AUTO operation

Explains automatic switching between cooling and heating modes.

2-7 Test run

Procedure for performing a test run on the unit.

2-8 Emergency operation

Instructions for operating the unit in emergency conditions.

2-10 Dip switch functions

Explains the configuration options provided by dip switches.

Outdoor Unit Control

Outdoor Fan and Unit Control

Explains outdoor fan control and overall outdoor unit operation.

Defrosting Operation in Heat Mode

Details the conditions and process of defrosting in heating mode.

Service Functions Overview

Describes service functions like compulsory defrosting and fixed fan output.

Troubleshooting

Troubleshooting in Test Run

Addresses issues encountered during test runs and their checks.

Self Diagnostic Function with Remote Controller

Troubleshooting According to Check Code

Wrong Wiring on Site

System Control

Centralized Remote Controller

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