Hitachi RAK-35PPB - 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 ----------------------------------------------------------------------10
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 43
MAIN PARTS COMPONENT --------------------------------------------------- 48
WIRING DIAGRAM ---------------------------------------------------------------- 50
CIRCUIT DIAGRAM --------------------------------------------------------------- 52
After installation
BLOCK DIAGRAM ----------------------------------------------------------------- 55
BASIC MODE ----------------------------------------------------------------------- 56
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 67
DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 73
SERVICE CALL Q & A ---------------------------------------------------------- 98
TROUBLE SHOOTING -----------------------------------------------------------102
PARTS LIST AND DIAGRAM --------------------------------------------------1
HHAW
RAK-18PPB/RAC-18WPB
RAK-25PPB/RAC-25WPB
RAK-35PPB/RAC-35WPB
RAK-50PPB/RAC-50WPB
INDOOR UNITOUTDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
INDOOR UNIT OUTDOOR UNIT
RAK-18P
RAC-18W
RAK-25P RAC-25W RAK-35P RAC-35W
RAK-50P RAC-50W
(KW)
(B.T.U./h)
(KW)
(B.T.U./h)
W
780 660(+60) 780 660(+60) 900 750(+65)
900 792(+91)
H
280 530 280 530 295 548
295 600
D
218 278(+35) 218 278(+35) 230
288(+27.5)
230 299(+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)
3.12-2.97
2.00 (0.90
2.50)
8,530 (3,070
10,580)
580 (250
970)
2.50 (0.90
27.57.5 27.57.5 3410
10
3.20)
3.49-3.34
11,600 (3,070
15,010)
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
550 (
700 (250
) 010 , 1
1,290)
4.56-4.36
3.40 (0.90
4.40)
11,600 (3,070
15,010)
4.87-4.66
1,100 (250
1,700)
5.51-5.27
14,330 (3,070
17,060)
3.75-3.59
2.50 (0.90
3.10)
8,530 (3,070
10,580)
7.30-6.98
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)
7.93-7.59
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.
PB
PB
PB PB PB PB
PB PB
RAC-18WPB
RAC-25WPB
RAK-18PPB
RAK-25PPB
RAC-50WPB
RAC-35WPB
1 PHASE,50HZ,220-230V
RAK-35PPB
RAK-50PPB
NO.0080E-3
38
40
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY-------------70
RAR-5E2
RAR-5E1

Summary

SPECIFICATIONS

SAFETY DURING REPAIR WORK

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

WIRING DIAGRAM

WIRING DIAGRAM OF THE PRINTED WIRING BOARD

CIRCUIT DIAGRAM

SERVICE CALL Q & A

Cooling operation

Troubleshooting questions and answers for cooling mode.

Heating operation

Troubleshooting questions and answers for heating mode.

Automatic operation

Troubleshooting questions and answers for automatic operation.

TROUBLE SHOOTING

Inspection instructions

Guidelines for inspecting electrical parts and troubleshooting.

DISCHARGE, PROCEDURE AND POWER SHUT OFF METHOD FOR POWER CIRCUIT

Discharge Procedure

Steps for safely discharging power for maintenance.

Troubleshooting support

Self-diagnosis display [Display on the indoor unit side]

How indoor unit self-diagnosis is displayed.

Self-diagnosis memory

How self-diagnosis data is stored and retrieved.

Diagnosis and troubleshooting of indoor electric parts, outdoor electric parts and refrigerating cycle

Initiating troubleshooting

Initial steps for troubleshooting based on blinking lights.

1. Failure phenomenon: The power will not become turned on.

2.Failure phenomenon: The product will not receive a remote control signal.

How to identify sources of jamming in the reception of remote control signals

3. Failure phenomenon: The compressor will not run.

4. Failure phenomenon: The fan motor will not stop.

5. Timer lamp blinking: blinking once

6. Timer lamp blinking: blinking twice

7. Timer lamp blinking: blinking three times

10. Timer lamp blinking: blinking 10 times

11. Timer lamp blinking: blinking 12 times

Diagnosis flow

Troubleshooting flowchart for timer lamp blinking 12 times.

Checking the electrical parts of the outdoor unit

Initiating troubleshooting

Initial steps for checking outdoor unit electrical parts.

The LD301 blinks 13 times.

EEPROM reading error

The LD301 blinks 9 times.

The LD301 blinks 10 times.

Power supply voltage error

Thermistor abnormality

Troubleshooting thermistor abnormalities.

OH thermistor rise

Troubleshooting OH thermistor rise.

High load stop

Troubleshooting high load stop.

Hitachi RAK-35PPB Specifications

General

Type	Split System
Cooling Capacity	3.5 kW
Heating Capacity	4.0 kW
Refrigerant	R410A
Power Supply	220-240V, 50Hz
Energy Efficiency Ratio (EER)	3.21
Coefficient of Performance (COP)	3.61
Outdoor Unit Dimensions (HxWxD)	548x750x288 mm
Noise Level (Outdoor Unit)	50 dB(A)