Mitsubishi Electric PU-2NJA User Manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. COMBINATION OF INDOOR AND OUTDOOR UNITS ···2
2. PART NAMES AND FUNCTIONS ··················2
3. DATA ·······························································3
4. OUTLINES AND DIMENSIONS······················5
5. WIRING DIAGRAM ·········································9
6. REFRIGERANT SYSTEM DIAGRAM···········11
7. TROUBLESHOOTING ··································12
8. DISASSEMBLY PROCEDURE ·····················16
9. PARTS LIST··················································18
10. OPTIONAL PARTS ·······································27
Outdoor unit
[Model names] [Service Ref.]
PU-2NJA PU-2NJA.TH
PU-2.5NJA PU-2.5NJA.TH
PU-3NJA PU-3NJA.TH
PU-4TJSA PU-4TJSA.TH
PU-5TJSA PU-5TJSA.TH
PU-5XJSA PU-5XJSA.TH
PU-6TJSA PU-6TJSA.TH
PU-6XJSA PU-6XJSA.TH
No.OC353
Outdoor unit
SPLIT-TYPE, AIR CONDITIONERS
Model name
indication
August 2005
OC353.qxq 05.8.9 9:27 AM Page 1

Mitsubishi Electric PU-2NJA Specifications

General

Brand	Mitsubishi Electric
Model	PU-2NJA
Category	Air Conditioner
Language	English

Summary

1 COMBINATION OF INDOOR AND OUTDOOR UNITS

2 PART NAMES AND FUNCTIONS

Outdoor Unit

Illustrates and describes the function of the outdoor unit and its air outlets.

3 DATA

1. ELECTRICAL SPECIFICATIONS

Details the electrical specifications and rating conditions for the units.

2.POWER SUPPLY & MODEL NAMES

Lists power supply details and corresponding outdoor unit model names and service references.

3.COMPRESSOR TECHNICAL DATA

Provides technical data for compressors, including winding resistance at a specific temperature.

4 ADDITIONAL REFRIGERANT CHARGE

4 OUTLINES AND DIMENSIONS

PU-2NJA.TH Dimensions

Provides detailed dimensions and installation clearances for the PU-2NJA.TH outdoor unit.

PU-2.5NJA.TH & PU-3NJA.TH Dimensions

Details dimensions and installation clearances for PU-2.5NJA.TH and PU-3NJA.TH outdoor units.

PU-4TJSA.TH Dimensions

Presents dimensions and installation clearances for the PU-4TJSA.TH outdoor unit.

PU-5/6TJSA.TH & PU-5/6XJSA.TH Dimensions

Lists dimensions and installation clearances for PU-5/6TJSA.TH and PU-5/6XJSA.TH outdoor units.

5 WIRING DIAGRAM

PU-2NJA.TH & PU-2.5NJA.TH Wiring

Illustrates the wiring diagram for PU-2NJA.TH and PU-2.5NJA.TH outdoor units.

PU-3NJA.TH Wiring

Shows the wiring diagram for the PU-3NJA.TH outdoor unit.

PU-4TJSA.TH Wiring

Details the wiring diagram for the PU-4TJSA.TH outdoor unit.

PU-5TJSA.TH & PU-6TJSA.TH Wiring

Presents the wiring diagram for PU-5TJSA.TH and PU-6TJSA.TH outdoor units.

PU-5XJSA.TH & PU-6XJSA.TH Wiring

Outlines the wiring diagram for PU-5XJSA.TH and PU-6XJSA.TH outdoor units.

6 REFRIGERANT SYSTEM DIAGRAM

PU-2/2.5/3NJA.TH Refrigerant Diagram

Illustrates the refrigerant system for PU-2, 2.5, and 3NJA.TH models.

PU-4TJSA.TH Refrigerant Diagram

Shows the refrigerant system for the PU-4TJSA.TH model.

PU-5/6TJSA.TH & PU-5/6XJSA.TH Refrigerant Diagram

Details the refrigerant system for PU-5/6TJSA.TH and PU-5/6XJSA.TH models.

7 TROUBLE SHOOTING

7-1. SELF-DIAGNOSTIC FUNCTION (Wired Remote Controller)

Explains how to use the self-diagnostic function via wired remote controller to identify unit malfunctions.

7-1-2. WIRED REMOTE CONTROLLER (Malfunction Display & Service Function)

Troubleshooting Check Codes and Causes

7-2. HOW TO CHECK THE PARTS

Fan Motor and Crank Case Heater Resistance Check

Guide to checking resistance for fan motors and crank case heaters.

Compressor Winding Resistance and Thermostat Check

Instructions for checking compressor winding resistance and internal thermostat motor protection.

8 DISASSEMBLY PROCEDURE

Outdoor Unit Disassembly Steps

Step-by-step guide for disassembling the outdoor unit, including electrical parts and fan motor.

Removing Heat Exchanger and Compressor

9 PARTS LIST - STRUCTURAL PARTS

PU-2NJA.TH Structural Parts

Lists structural parts for the PU-2NJA.TH model with part numbers and specifications.

PU-2.5NJA.TH & PU-3NJA.TH Structural Parts

PU-4TJSA.TH Structural Parts

PU-5/6TJSA.TH & PU-5/6XJSA.TH Structural Parts

FUNCTIONAL PARTS PU-2NJA.TH

FUNCTIONAL PARTS PU-2.5NJA.TH PU-3NJA.TH

FUNCTIONAL PARTS PU-4TJSA.TH

FUNCTIONAL PARTS PU-5TJSA.TH PU-6TJSA.TH

FUNCTIONAL PARTS PU-5XJSA.TH PU-6XJSA.TH

10 OPTIONAL PARTS

Air Outlet Guide

Describes the air outlet guide accessory for changing air discharge direction.