Whirlpool WRF954CIHV Service Manual page 30

DIAGNOSTICS
RC Defrost Troubleshooting
Diagnostics has several Service Tests to aid in troubleshooting the RC Defrost system.
+12.7 VDC
Fan
Power
P16-4
Supply
Orion Board
+12.7 VDC
Turns Fan
&
P14-3
Controls
Speed
Neutral
P14-4
GF2 Board
Run Service Test 01 - RC Thermistor
• Ensure the thermistor is not Open "OP" or Shorted "SH".
Replace any faulty thermistors.
Run Service Test 03 - RC Evaporator Thermistor
• Ensure the thermistor is not Open "OP" or Shorted "SH".
Replace any faulty thermistors.
Run Service Test 57 – RC Fan Test
• Ensure LED Display shows "on"
• Check that the fan is operating
French-Door Bottom Mount Refrigerator
n
1-26
For Service Technician Use Only
GY GY
Pin 8
12 Pin Conector
Machine Compartment
Left Side
V
TN
BR
Pin 7 P
V
Pin 8 P
TN
Pin 9 Pin 3
16 Pin Conector 3 Pin Fan Conector
RC Evaporator Area Evaporator Cover Assembly
Bottom RightSide
If fan is not operating:
• Check all wiring connectors tight (See FIGURE 6, Page 4-6).
• Check integrity of wiring between control board and fan.
(Continuity or Voltage check as appropriate)
If wiring check indicates bad wiring:
• Replace wiring harness
If wiring checks OK, or if fan is still not operating:
• Replace fan.
If LED Display does not show "on":
• Replace GF2 Board.
BR
in 1
V
in 2
TN
RC
Fan