– 58 –
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.
Summary of Contents for PSI21MGM
Page 1: ......
Page 32: ... 30 Notes ...
Page 33: ... 31 Notes ...
Page 63: ... 61 Schematics ...
Page 64: ... 62 ...
Page 66: ... 64 ...
Page 67: ... 65 ...
Page 68: ... 66 ...
Page 69: ... 67 ...
Page 70: ... 68 Ref No Part Number Description 228 WR85X10022 Low Side Assembly ...
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