SERVICE MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
RAK-18QH8S(W)
RAK-18QH8(W)
RAK-25QH8(W)
RAK-35QH8(W)
RAK-50QH8(W)
RAK-18QH8S(B)
RAK-18QH8(B)
RAK-25QH8(B)
RAK-35QH8(B)
RAK-50QH8(B)
NOTE:
This manual describes only points that differ from
PM No. 0270E, PM No. 0312E, PM No. 0322E &
PM No. 0371E for items not described in this manual.
SPECIFICATIONS
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
COOLING
CAPACITY
TOTAL INPUT
TOTAL AMPERES
HEATING
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
JUNE 2009
RAK-18QH8S(W)
RAK-18QH8S(B)
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
9.5
INDOOR UNIT
Refrigeration & Air-Conditioning Division
PM
RAK-18QH8S(W)
RAK-18QH8(W)
RAK-25QH8(W)
RAK-35QH8(W)
RAK-50QH8(W)
RAK-18QH8S(B)
RAK-18QH8(B)
RAK-25QH8(B)
RAK-35QH8(B)
RAK-50QH8(B)
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS ----------------------------------------------------- 4
HOW TO USE ---------------------------------------------------------- 8
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 30
BLOCK DIAGRAM --------------------------------------------------- 37
BASIC MODE --------------------------------------------------------- 39
AUTO SWING FUNCTION ---------------------------------------- 55
DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 56
SERVICE CALL Q & A -------------------------------------------- 63
DC INVERTER (WALL TYPE)
INDOOR UNIT
RAK-18QH8(W)
RAK-25QH8(W)
RAK-18QH8(B)
RAK-25QH8(B)
1 PHASE, 50/60 Hz, 220-240V
REFER TO THE SPECIFICATION (OUTDOOR)
795
295
198
9.5
9.5
NO. 0456E
CONTENTS
RAK-35QH8(W)
RAK-50QH8(W)
RAK-35QH8(B)
RAK-50QH8(B)
9.5
9.5