GE PSC21MGM, Technical Service Manual

Page: 60 / 76

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Main Control Board (Low-Voltage Side)
1 5 1
10
1
9
J1
J5
6
J3
J2
1
1 COMM 2 +12V 3 -COM 4 DI 5 DO
J4
1
8
DEFROST HEATER ON TIME
(MINUTES)
COMPRESSOR RUN TIME
(MINUTES)
ACCUMULATED FF AND FRZ
DOOR OPENINGS (MINUTES)
THERMISTOR
INPUTS
ENCODER
INPUTS
MODEL
SELECT
COMMUNICATION
INPUT/OUTPUT
DAMPER
COILS
FAN OUTPUTS
INPUTS
PROCESSING
UNIT
1 - Blk
2 - Red
3 - Blu
4 - Pur
5 - Wht 1 - Yel
2 - Red / Blk
3 - Wht / Brn
4 - Blu / Yel 1 - Blu / Red
2 - Yel
3 - Red / Wht
4 - Blu / Wht
5 - Blu
J4
J2
J3 J1
8 - Red
7 - Not Used
6 - Blk / Wht
5 - Yel
4 - Yel / Blk
3 - Wht
2 - Blu / Wht
1 - Blu
GEA00906
NOTE: Refer to the Main Control Board Locator Tables in the Diagnostics chapter for more
information.