Hitachi RAC-35WXEN User Manual

ROOM AIR CONDITIONER
OUTDOOR UNIT
SERVICE MANUAL
TECHNICAL INFORMATION
SPECIFICATIONS
After installation
OUTDOOR UNIT
Johnson Controls-Hitachi Air Conditioning Wuhu Co., Ltd.
JCH-WH
FOR SERVICE PERSONNEL ONLY
RAC-50WXEN
RAC-25WXEN
RAC-35WXEN
OUTDOOR UNIT OUTDOOR UNIT OUTDOOR UNIT
RAC-25W RAC-35W RAC-50W
(KW)
(B.T.U./h)
(KW)
(B.T.U./h)
W
792(+65)
600
299(+27.5)
38.2
H
D
MODEL
POWER SOURCE
TOTAL INPUT (W)
TOTAL AMPERES (A)
CAPACITY
COOLING
HEATING
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
814 (250 1,400)
DIMENSIONS
(mm)
1,397 (500 2,100)
593 (250 1,200)
NET WEIGHT (Kg)
TYPE
DC INVERTER
1 PHASE,50Hz,220-230V 1 PHASE,50Hz,220-230V 1 PHASE,50Hz,220-230V
481 (250 1,000)
2.73-2.61
3.20 (0.90 4.20)
10,920 (3,070 14,330)
3.74-3.57
3.67-3.51
13,650 (3,070 16,380)
2.92-2.79
2.50 (0.90 3.10)
8,530 (3,070 10,580)
6.36-6.09
3.50 (0.90 4.00) 5.00 (1.90 5.20)
11,940 (3,070 13,650)
17,060 (6,480 17,740)
6.44-6.16
1,415 (500 2,700)
4.00 (0.90 4.80)
5.80 (2.20 7.00)
XEN XEN XEN
792(+65)
600
299(+27.5)
38.2
800(+63)
736
350(+35.5)
51.7
800 (250 1,600)
RAC-25WXEN
RAC-35WXEN
RAC-50WXEN
19,790 (7,510 23,880)
REFER TO THE FOUNDATION MANUAL
CONTENTS
SPECIFICATIONS ------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------------ 9
MAIN PARTS COMPONENT ----------------------------------------- 11
WIRING DIAGRAM ------------------------------------------------------ 13
BLOCK DIAGRAM ------------------------------------------------------- 15
SHEATHED HEATER --------------------------------------------------- 16
REFRIGERATING CYCLE DIAGRAM ------------------------------ 18
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY---- 20
DESCRIPTION OF MAIN CIRCUIT OPERATION --------------- 21
SERVICE CALL Q & A -------------------------------------------------- 31
TROUBLE SHOOTING -------------------------------------------------- 35
PARTS LIST AND DIAGRAM ------------------------------------------ 48
NO.0123E
1

Hitachi RAC-35WXEN Specifications

General

Brand	Hitachi
Model	RAC-35WXEN
Category	Air Conditioner
Language	English

Summary

CONTENTS

SPECIFICATIONS

Detailed technical specifications for various models of the air conditioner.

CONSTRUCTION AND DIMENSIONAL DIAGRAM

Visual representation of unit dimensions and construction layout.

MAIN PARTS COMPONENT

Identification and specifications of key internal components.

WIRING DIAGRAM

Electrical schematic illustrating component connections for the outdoor unit.

BLOCK DIAGRAM

High-level functional overview of the unit's systems and signal flow.

SHEATHED HEATER

Information on the sheathed heater operation and switch settings.

REFRIGERATING CYCLE DIAGRAM

Diagram illustrating the refrigerant flow in cooling and heating modes.

PROCEDURE FOR DISASSEMBLY AND REASSEMBLY

Step-by-step guide for taking apart and reassembling the unit.

DESCRIPTION OF MAIN CIRCUIT OPERATION

Explanation of how the main electrical circuit functions, including key components.

SERVICE CALL Q&A

Frequently asked questions and answers for common service issues.

TROUBLE SHOOTING

Systematic guide for diagnosing and resolving operational problems.

SAFETY DURING REPAIR WORK

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

Items to be observed in handling

Guidelines for handling sensitive electronic components safely and correctly.

Wireless remote control