RS5290000 Rev. 0
30
April 1998
Electronic Functional Description
Refrigeration and Defrost Component Checks Made at High Voltage Board
Power Swtich Is ON
Low voltage board input
W1 to D11
-25 VDC
High voltage board input
E10 (L)/E9 (N)
220 VAC
Compressor/condenser
Blue/White Wire
Contacts Closed
220 VAC
Fan motor
Comp/Relay to E9
Contacts Open
0 VAC
Compressor/condenser
E4 to E12
Contacts Closed
220 VAC
Fan motor
Contacts Open
0 VAC
Relay coil
Defrost heater
E6 to E9
Contacts Closed
220 VAC
Contacts Open
0 VAC
Defrost heater
E3 to E12
Contacts Closed
-25 VDC
Relay Coil
Contacts Open
0 VDC
Defrost terminator
E6 to E9
Contacts Closed
220 VAC
(Klixon)
Contacts Open
0 VAC
Damper heater output
E1 to E11
Contacts Closed
-25 VDC
From high voltage board
Contacts Open
0 VDC
Damper heater input
R10 to E11
Contacts Closed
-11 VDC
From low voltage board
Contacts Open
-25 VDC
From high voltage board
Evaporator Fan Motor
E2 to E12
Contacts Closed
-25 VDC
Relay Coil
Contacts Open
0 VDC
To avoid electrical shock which can cause severe personal injury or death, disconnect power to refrigerator using
power switch before servicing. Discharge capacitors through a resistor before handling. Wires removed during
disassembly must be replaced on proper terminals to insure correct earthing and polarization. After servicing,
reconnect power using power switch.
!
WARNING