Refrigeration And Defrost Component Checks At High-Voltage Board - Amana V Series Service Manual

Electronic Controls
To avoid risk of electrical shock, severe personal injury or death; disconnect power to unit before servicing, unless
testing requires power. Discharge capacitor through a 10,000 ohm resistor before handling. Wires removed during
disassembly must be placed on the correct terminals to ensure proper grounding and polarization.

Refrigeration and Defrost Component Checks at High-Voltage Board

Voltage to Check
Low-voltage (LV board input)
High-voltage (HV board input)
Filament voltage (HV board output)
Compressor/condenser fan motor
Compressor/condenser fan-motor
relay*
Evaporator fan-motor relay*
Evaporator fan motor
Defrost heater
Defrost-heater relay*
Defrost terminator
Fresh-food damper output voltage,
HV board to damper-heater*
Fresh-food damper input-voltage
signal to HV board from LV board
*DC voltages are read from side of resistor closest to 12-pin connector.
RS1300004 Rev. 1
!
WARNING
Measure Point-to-Point
W1 to D11
E10 to E9 (neutral) ground
Pin 11 to Pin 12 (on HV board)
"ON" = E4 to E9 (neutral) ground
"OFF" = E4 to E9 (neutral) ground
"CLOSED" = R7 to ground
"OPEN" = R7 to ground
"CLOSED" = R8 to ground
"OPEN" = R8 to ground
"ON" = E2 to E9 (neutral) ground
"OFF" = E2 to E9 (neutral) ground
"ON" = E6 to E9 (neutral) ground
"OFF" = E6 to E9 (neutral) ground
"CLOSED" = R9 to ground
"OPEN" = R9 to ground
"CLOSED" = E5 to E9 (neutral) ground
"OPEN" = E5 to E9 (neutral) ground
"ON" = E1 to ground
"OFF" = E1 to ground
"ON" = R10 to ground
"OFF" = R10 to ground
A–8
Correct Readings
approximately –25 VDC
approximately 120 VAC
less than 5 VAC
approximately 120 VAC
0 VAC
approximately –11 VDC
approximately –25 VDC
approximately –11 VDC
approximately –25 VDC
approximately 120 VAC
0 VAC
approximately 120 VAC
0 VAC
approximately –11 VDC
approximately –25 VDC
approximately 120 VAC
0 VAC
approximately –25 VDC
-0 VDC
approximately –11 VDC
approximately –25 VDC