Hitachi RAF-25QH8, Service Manual

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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)