Hitachi RAM-55QH4, Service Manual, Page: 1 / 109

RAM-55QH4
RAM-65QH4
NO. 0217E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
OUTDOOR UNIT
JUNE 2004
Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 5
INSTALLATION ---------------------------------------------------------------------- 14
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------------- 21
MAIN PARTS COMPONENT --------------------------------------------------- 23
CAPACITY DIAGRAM ------------------------------------------------------------- 25
WIRING DIAGRAM ----------------------------------------------------------------- 33
CIRCUIT DIAGRAM ---------------------------------------------------------------- 37
BLOCK DIAGRAM ------------------------------------------------------------------ 43
BASIC MODE ------------------------------------------------------------------------ 45
REFRIGERATING CYCLE DIAGRAM ---------------------------------------- 73
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------------ 77
TROUBLE SHOOTING ---------------------------------------------------------- 108
DISASSEMBLY AND REASSEMBLY --------------------------------------- 115
PARTS LIST AND DIAGRAM ------------------------------------------------- 118
RAM-55QH4
RAM-65QH4
After installation
NOTE:
This manual describes only points that differ from RAF-25,
50NH4, RAD-25, 40QH4 and RAM-70, 80QH4 (TC No.
0757EF), RAK-25, 35, 50NH4 (TC No. 0761EF), RAD-25,
40NH4, RAI-25, 40NH4 (TC No. 0763EF) for items not
described in this manual.
850
650
298
50
(W)
(A)
COOLING CAPACITY
DC INVERTER DUAL SYSTEM MULTI
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
SPECIFICATIONS
OUTDOOR UNIT
RAM-55QH4
RAM-65QH4
HEATING CAPACITY
DIMENSIONS (mm)
NET WEIGHT
1ø, 220 - 240V, 50Hz
W
H
D
(kg)
(kW)
(B.T.U.)
REFER TO THE SPECIFICATIONS PAGE