Hitachi RAM-68NP3B, Service Manual, Page: 1 / 79

NO.
058 5 E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
OUTDOOR UNIT
JANUARY 2015
Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
RAM-
68
NP
3
B
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
CONTENTS
SPECIFICATIONS ---------------------------------------------------------------------5
FEATURES ---------------------------------------------------------------------------- 10
INSTALLATION ----------------------------------------------------------------------- 14
CONSTRUCTION AND DIMENSIONAL DIAGRAM ----------------------- 18
MAIN PARTS COMPONENT ---------------------------------------------------- 19
WIRING DIAGRAM ----------------------------------------------------------------- 21
CIRCUIT DIAGRAM ---------------------------------------------------------------- 23
BLOCK DIAGRAM ------------------------------------------------------------------ 25
BASIC MODE ------------------------------------------------------------------------ 27
REFRIGERATING CYCLE DIAGRAM----------------------------------------- 47
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------------- 48
TROUBLE SHOOTING ------------------------------------------------------------ 82
PARTS LIST AND DIAGRAM ---------------------------------------------------- 90
After installation
850
800
298
55
(W)
(A)
COOLING CAPACITY
DC INVERTER
TRIPLE
SYSTEM MULTI
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
SPECIFICATIONS
OUTDOOR UNIT
RAM-
68
NP
3
B
HEATING CAPACITY
DIMENSIONS (mm)
NET WEIGHT
1ø, 220 - 240V, 50/60Hz
W
H
D
(kg)
(kW)
(B.T.U.)
REFER TO THE SPECIFICATIONS PAGE
RAM-
68
NP
3
B