Hitachi RAC-50NH5, Service Manual, Page: 1 / 113

CONTENTS
SPECIFICATIONS --------------------------------------------------------------5
HOW TO USE -------------------------------------------------------------------7
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------- 30
MAIN PARTS COMPONENT --------------------------------------------- 32
WIRING DIAGRAM ----------------------------------------------------------- 35
CIRCUIT DIAGRAM ---------------------------------------------------------- 39
PRINTED WIRING BOARD LOCATION DIAGRAM---------------- 42
BLOCK DIAGRAM ------------------------------------------------------------ 46
BASIC MODE ------------------------------------------------------------------ 48
REFRIGERATING CYCLE DIAGRAM ---------------------------------- 60
AUTO SWING FUNCTION------------------------------------------------- 61
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------ 62
SERVICE CALL Q & A ----------------------------------------------------- 93
TROUBLE SHOOTING ------------------------------------------------------ 96
PARTS LIST AND DIAGRAM ------------------------------------------- 118
NO. 0302E
SERVICE MANUAL
PM
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
RAK-50NH5/RAC-50NH5
RAK-50NH5
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
JANUARY 2006
Refrigeration & Air-Conditioning Division
INDOOR UNIT + OUTDOOR UNIT
RAC-50NH5
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
RAK-50NH5 RAC-50NH5
DC INVERTER (WALL TYPE)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS
780
280
210
9.5
COOLING
HEATING
INDOOR UNIT OUTDOOR UNIT
1 PHASE, 50 Hz, 220-240V
1,780 (155 ~ 2,200)
8.14-7.50
5.00 (0.90 ~ 5.20)
17,070
1,970 (155 ~ 2,200)
9.00-8.30
6.50 (0.90 ~ 8.10)
22,180
850
650
298
45