Hitachi RAK-50PEC User Manual

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

Hitachi RAK-50PEC Specifications

General

Cooling Capacity	5.0 kW
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Type	Split System
Outdoor Unit Dimensions (WxHxD)	780 x 540 x 260 mm
Noise Level (Outdoor)	52 dB

Summary

Safety During Repair Work

Working Standards for Preventing Breakage of Semiconductors

Safety Precaution

Precautions During Operation

Essential safety measures to follow during the operation of the unit.

Wiring Diagram

Block Diagram

Refrigerating Cycle Diagram

Procedure for Disassembly and Reassembly

1. Front Panel

Instructions for disassembling and reassembling the front panel of the indoor unit.

Description of Main Circuit Operation

1. Control Power Circuit

Explains the operation of the control power circuit.

Service Call Q&A

Cooling Operation

Trouble Shooting

Discharge, Procedure and Power Shut Off Method for Power Circuit

Structure of an Indoor Unit Electric Parts

Removing Electrical Parts

Troubleshooting Support

Self-diagnosis Display [Display on the Indoor Unit Side]

Checking the Indoor Unit Electrical Parts

1. Failure Phenomenon: The Power Will Not Become Turned On.

2.Failure Phenomenon: The Product Will Not Receive a Remote Control Signal.

3. Failure Phenomenon: The Compressor Will Not Run.

4. Failure Phenomenon: The Fan Motor Will Not Stop.

Checking the Electrical Parts of the Outdoor Unit

Checking the Refrigerating Cycle