Tech Sheet

29
Test Name Description Steps
TEST #11
Secondary (Left)
Oven Cooling Fan
Control, fan, HE sensor
This test measures the function
of the cooling fan including the
resistance at low and high speed to
determine if there is a connection
or fan motor issue. Additionally, it
provides a method to test the hall
effect sensor feedback.
Resistance Tests:
1. High/low speed cooling fan -
motor check
2. Hall sensor feedback circuits in
board - circuit/connection
Function Tests:
1. High speed cooling fan -
mechanical or other failure
2. Hall effect sensor - determine if
sensor failed
3. Low speed cooling fan -
mechanical or other failure
1. Unplug range or disconnect power. Measure the cooling fan connection on the left cavity control
REB. Measure the low and high speed resistance values and compare to expected values.
High Speed between J6-4 and J5-3 and compare to High Speed Resistance (21±5 Ω).
Low Speed resistance between J7-2 and J5-3 and compare to Low Speed Resistance (29±5 Ω).
If both low and high resistance values are within range, then go to step 5. If either are out of
range, go to step 2.
2. Remove back panel, check the connection to the cooling fan, and measure resistance on cooling
fan connector. High Speed Resistance should be present between black and white wire and Low
Speed Resistance should be present between red and white. If not present, change cooling fan.
3. Remove J5 connector, measure resistance on the board between J5-2 and J5-3 (hall effect
sensor feedback circuit), if the resistance is out of 5~10 KΩ, replace REB control.
4. Reconnect all connectors.
5. Connect voltmeter between J5-2 (GND) and J5-3 (VDD). Plug in range or reconnect power and
measure DC voltage.
If VDD 12~15 V is present, unplug range or disconnect power and go to step 8.
6. Unplug range or disconnect power. Disconnect J5, plug in range or reconnect power and
measure DC voltage again. If it is still not present, REB is improperly functioning. Unplug range or
disconnect power and replace REB board.
7. Unplug range or disconnect power. Disconnect J3 to open the RTD in order to test the cooling
fan.
NOTE: This will trigger an RTD error code F3E1 but it is necessary to isolate and test the cooling
fan.
Plug in range or reconnect power, The high speed cooling fan should turn on immediately.
Visually check if the fan is on. If it is on, unplug range or disconnect power and wait for 3
minutes, then go to step 10. Otherwise, proceed to step 8.
8. If the cooling fan is on, unplug range or disconnect power and connect the voltmeter between
J6-4 and J5-3. Plug in range or reconnect power and measure AC voltage.
If 120 VAC is not present, unplug range or disconnect power and replace REB control.
9. If 120 VAC is present, unplug range or disconnect power. Connect voltmeter between black wire
and white wire on the cooling fan, plug in range or reconnect power.
If 120 VAC is present but the fan is not on, the cooling fan is improperly functioning. Unplug
range or disconnect power.