Hitachi RAF-35QH8 User manual

NO. 0423E

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

ROOM AIR CONDITIONER

INDOOR UNIT

JUN 2008

Refrigeration & Air-Conditioning Division

SERVICE MANUAL

PM

REFER TO THE FOUNDATION MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY

(W)

(A)

(kW)

(B.T.U./h)

(W)

(A)

(kW)

(B.T.U./h)

W

H

D

(kg)

RAF-25QH8/RAF-35QH8/RAF-50QH8

DC INVERTER

TYPE

MODEL

POWER SOURCE

TOTAL INPUT

TOTAL AMPERES

CAPACITY

TOTAL INPUT

TOTAL AMPERES

CAPACITY

DIMENSIONS

(mm)

NET WEIGHT

SPECIFICATIONS

750

590

215

15

RAF-25QH8

RAF-35QH8

RAF-50QH8

CONTENTS

SPECIFICATIONS ------------------------------------------------------------------- 5

HOW TO USE ------------------------------------------------------------------------ 6

CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 27

MAIN PARTS COMPONENT --------------------------------------------------- 28

WIRING DIAGRAM ---------------------------------------------------------------- 29

WIRING DIAGRAM OF THE PRINTED WIRING BOARD ------------ 31

BLOCK DIAGRAM ----------------------------------------------------------------- 35

BASIC MODE ----------------------------------------------------------------------- 37

REFRIGERATING CYCLE DIAGRAM --------------------------------------- 51

DISASSEMBLY & ASSEMBLY PROCEDURE ---------------------------- 52

DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 57

SERVICE CALL Q & A ---------------------------------------------------------- 63

TROUBLE SHOOTING ----------------------------------------------------------- 68

PARTS LIST AND DIAGRAM -------------------------------------------------- 75

RAF-25QH8

RAF-35QH8

RAF-50QH8

COOLING

HEATING

INDOOR UNIT

After installation

1ø, 220 – 230V, 50 Hz

INDOOR UNIT

REFER TO THE SPECIFICATION

(OUTDOOR)

– 1 –

– 2 –

– 3 –

– 4 –

– 5 –

RAF-25QH8/RAF-35QH8/RAF-50QH8

– 6 –

– 7 –

– 8 –

RAF-25QH8

RAF-35QH8

RAF-50QH8

(INDOOR UNIT)

– 9 –

– 10 –

– 11 –

– 12 –

– 13 –

– 14 –

– 15 –

– 16 –

– 17 –

– 18 –

– 19 –

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