Appendix
TD831077
IX - 2
9
1. P.C.B. illustrations
■ P.C.B. (CR-X253GH) for indoor units
When replacing the indoor unit PCB for service, remove the *E
2
P-ROM of the original PCB then attach it to
the new PCB since the original E
2
P-ROM has it's own data (ex. indoor unit address) to identify the unit.
Note when replacing the indoor unit PCB
1208_THS_I
Shipment state
: Pulse signal
Jumper cut
: Static signal
JP1 (Jumper wire)
: For sellecting the
signal of T10.
CN5 (WHT) : FORCED OPR
CN3 (WHT) : TEST PIN
CN2 (WHT) : CHECK PIN
CN1 (WHT) : DISP PIN
CN33 (YEL) : ROOM TEMP
CN31 (RED) : COIL E1
CN32 (BLK) : COIL E2
CN30 (BRN) : COIL E3
CN6 (RED) EXCT
: Forced thermostat
OFF input terminal
CN71 (YEL) T10
: External input and
output terminal
CN34 (GRN) : DISCHARGE
CN83 (WHT) : FM
CN79 (RED) : HU1
CN85 (BLU) : DPH
CN76 (BLK) : OP1
CN78 (BLU) : DP
CN84 (WHT) : RN3
CN81 (GRY) : T20
CN80 (RED) : 26H
D80 (RED)
: Power lamp
CR-X253GH
CN42 (BLU) : For wireless remote controller
CN43
(BLU)
HU (BLK)
CN36
T18 (RED)
CN72
CN10 (YEL) CN7
CN34
CN35 (GRN) : PNL
CN41 (BLU) : Wired remote controller
CN9 (RED) : FS
CN8 (WHT) : LS
CN73 (BLK) : RN1
F3 : Fuse 125V / 0.5A
F1 : Fuse 250V / 5A
CN40 (BLU) : OC
CN44 (BRN) : EMG
CN70 (WHT) : T6
CN75 (WHT) : VCC
CN74 (WHT) : RN2
CN77 (GRN) : LM
E
2
P-ROM
AIR TEMP
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