Hitachi RAC-25NH5, Service Manual

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NO. 0324E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
JANUARY 2006
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)
RAK-25NH5 RAC-25NH5
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
RAK-25NH5
RAK-35NH5
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 5
HOW TO USE ------------------------------------------------------------------------ 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 29
MAIN PARTS COMPONENT --------------------------------------------------- 31
WIRING DIAGRAM ---------------------------------------------------------------- 33
CIRCUIT DIAGRAM --------------------------------------------------------------- 35
PRINTED WIRING BOARD LOCATION DIAGRAM --------------------- 41
BLOCK DIAGRAM ----------------------------------------------------------------- 43
BASIC MODE ----------------------------------------------------------------------- 45
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 59
AUTO SWING FUNCTION ------------------------------------------------------ 61
DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 62
SERVICE CALL Q & A ---------------------------------------------------------- 93
TROUBLE SHOOTING ----------------------------------------------------------- 96
PARTS LIST AND DIAGRAM ------------------------------------------------- 116
RAK-25NH5/RAC-25NH5
RAK-35NH5/RAC-35NH5
COOLING
HEATING
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
1 PHASE, 50 Hz, 220-240V
750 (200~880)
3.44-3.16
2.50 (1.00 ~ 3.10)
8,540
870 (200 ~ 1,120)
3.99-3.66
3.40 (1.10 ~ 4.40)
11,610
750
570
280
38
780
280
210
9.5
750
570
280
38
1 PHASE, 50 Hz, 220-240V
1,090 (200~1,300)
5.00-4.59
3.50 (1.00 ~ 4.00)
11,950
1,080 (200 ~ 1,300)
4.96-4.55
4.20 (1.10 ~ 5.00)
14,340
After installation
RAK-35NH5 RAC-35NH5
RAC-25NH5
RAC-35NH5