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Hitachi RAK-35PEC User Manual

Hitachi RAK-35PEC
113 pages
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SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
SERVICE MANUAL
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
SPECIFICATIONS
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 6
HOW TO USE ----------------------------------------------------------------------- 9
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 18
MAIN PARTS COMPONENT --------------------------------------------------- 21
WIRING DIAGRAM ---------------------------------------------------------------- 23
CIRCUIT DIAGRAM --------------------------------------------------------------- 25
After installation
BLOCK DIAGRAM ----------------------------------------------------------------- 28
BASIC MODE ----------------------------------------------------------------------- 29
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 39
DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 45
SERVICE CALL Q & A ---------------------------------------------------------- 70
TROUBLE SHOOTING ----------------------------------------------------------- 73
PARTS LIST AND DIAGRAM --------------------------------------------------105
HHAW
INDOOR UNITOUTDOOR UNIT
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
RAK-18PEC RAC-18WEC
RAK-25PEC
RAK-25PECC
RAC-25WEC RAC-35WEC
RAC-10WECI RAC-14WECI
RAK-10PECI
RAK-35PEC
RAK-35PECC
RAK-14PECI
RAK-50PEC
RAK-50PECC
RAK-20PECI
RAC-50WEC
RAC-20WECI
(KW)
(B.T.U./h)
(KW)
(B.T.U./h)
W 780 660(+60) 780 660(+60) 780 660(+60) 780 792(+91)
H 280 530 280 530 280 530 280 600
D 218 278(+55) 218 278(+55) 218 278(+55) 218 299(+47)
MODEL
POWER SOURCE
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
COOLING
HEATING
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
1,090 (250
1,460)
DIMENSIONS
(mm)
1,560 (500 2,100)
3.19-3.05
2.00 (0.90
2.50)
6,820 (3,070
8,530)
620 (250
970)
2.50 (0.90
3.20)
3.62-3.46
7.5 24.5 7.5 24.5 7.5 27.5 40
8,530 (3,070
10,920)
880 (250
1,250)
NET WEIGHT (Kg)
TYPE
DC INVERTER
1 PHASE,50Hz ,220-230V 1 PHASE,50Hz ,220-230V 1 PHASE,50Hz ,220-230V 1 PHASE,50Hz , 220-230V
580 (
700 (250 1,290)1,010)
4.56-4.36
3.40 (0.90
4.40)
11,600 (3,070
15,010)
5.41-5.18
1,100 (250
1,700)
5.36-5.13
14,330 (3,070
17,060)
3.84-3.67
2.50 (0.90
3.10)
8,530 (3,070
10,580)
7.29-6.85
3.50 (0.90
4.00) 5.00 (1.90 5.20)
11,940 (3,070
13,650) 17,060 (6,480 17,740)
20,470 (7,510
24,910)
7.56-7.23
1,660 (500
2,750)
4.20 (0.90
5.00) 6.00 (2.20 7.30)
25
0
Hitachi Household Appliances(Wuhu) Co., Ltd.
NO. 0093E
8
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY------------- 42
L.H
RAK-18PEC/RAC-18WEC
RAK-35PEC/RAC-35WEC
RAK-50PEC/RAC-50WEC
RAK-25PEC/RAC-25WEC
RAK-35PECC/RAC-35WEC
RAK-50PECC/RAC-50WEC
RAK-25PECC/RAC-25WEC
RAK-14PECI/RAC-14WECI
RAK-20PECI/RAC-20WECI
RAK-10PECI/RAC-10WECI
RAK-18PEC
RAK-25PEC
RAK-35PEC
RAK-50PEC
RAK-25PECC
RAK-35PECC
RAK-50PECC
RAK-10PECI
RAK-14PECI
RAK-20PECI
RAC-18WEC
RAC-25WEC
RAC-35WEC
RAC-10WECI
RAC-14WECI
RAC-50WEC
RAC-20WECI

Table of Contents

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Hitachi RAK-35PEC Specifications

General IconGeneral
Cooling Capacity3.5 kW
Heating Capacity4.0 kW
RefrigerantR410A
Power Supply220-240V, 50Hz
TypeSplit System

Summary

SAFETY DURING REPAIR WORK

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

SPECIFICATIONS

NAMES AND FUNCTIONS OF REMOTE CONTROLLER

SAFETY PRECAUTIONS

Precautions During Operation

Critical safety measures to follow while the air conditioner is in operation.

Precautions During Shipping or Maintenance

Safety guidelines for handling the unit during transport or maintenance.

NAMES AND FUNCTIONS OF EACH PART

MAINTENANCE

REGULAR INSPECTION

CONSTRUCTION AND DIMENSIONAL DIAGRAM

MAIN PARTS COMPONENT

WIRING DIAGRAM

CIRCUIT DIAGRAM

Basic Cooling Operation

Cooling Powerful Operation

Dehumidifying Operation

Dehumidifying Powerful Operation

Basic Heating Operation

Reversing Valve Defrosting

Heating Powerful Operation

ECO OPERATION

REFRIGERATING CYCLE DIAGRAM

Procedure for Disassembly and Reassembly

Indoor Unit Disassembly

Step-by-step instructions for disassembling the indoor unit components.

Outdoor Unit Electrical Parts Disassembly

DESCRIPTION OF MAIN CIRCUIT OPERATION

Power Circuit

SERVICE CALL Q&A

Cooling Operation Issues

Troubleshooting common problems encountered during cooling operation.

Dehumidification Issues

Solutions for noise and airflow problems during dehumidification.

Heating Operation Issues

Troubleshooting common problems during heating operation.

TROUBLE SHOOTING

Inspection Instructions and Safety Warnings

Guidelines for safe inspection and troubleshooting procedures.

DISCHARGE, PROCEDURE AND POWER SHUT OFF METHOD FOR POWER CIRCUIT

STRUCTURE OF AN INDOOR UNIT ELECTRIC PARTS

Troubleshooting Support

Self-Diagnosis Display and Memory

Information on interpreting self-diagnosis codes and stored failure data.

Indoor Self-Diagnosis Display Function

SELF-DIAGNOSIS LIGHTING MODE

Self-Diagnosis Display Codes

Detailed list of self-diagnosis codes indicated by LED blinking patterns.

Forced Cooling Operation

Diagnosis and Troubleshooting of Refrigerating Cycle

Checking the Indoor Unit Electrical Parts

Failure Phenomenon: Power Not Turning On

Failure Phenomenon: No Remote Control Signal

Identifying Sources of Remote Control Signal Jamming

Failure Phenomenon: Compressor Not Running

Failure Phenomenon: Fan Motor Not Stopping

Timer Lamp Blinking Codes

Timer Lamp Blinking: 9 Times

Timer Lamp Blinking: 10 Times

Timer Lamp Blinking: 12 & 13 Times

Checking the Outdoor Unit Electrical Parts

Outdoor Unit Diagnostics (RAC-18/25/35WEC)

Outdoor Unit Diagnostics (RAC-50WEC)

Power Supply Voltage and Thermistor Checks

Refrigerating Cycle and Compressor Checks

Fan Motor and Compressor Checks

SETTING PREVENTION OF MUTUAL INTERFERENCE FOR REMOTE CONTROLLER

HOW TO CHANGE THE SHIFT VALUE SETTING TEMPERATURE

CHECKING THE REFRIGERATING CYCLE

How to Run with Outdoor Unit Test Switch

HOW TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY

PARTS LIST AND DIAGRAM

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