Trouble Shooting - Ventilation Fan - Norcold 3163 Service Manual

Is the mode
selection in the
Gas position?
Set mode
selection switch
to gas.
Disconnect red
wire from fan
to thermostat.
Connect the
two wires
together.
DC Voltage: 12 VDC

Trouble Shooting - Ventilation Fan

Is 12 VDC
YES
present at
input of 1
amp fuse?
NO NO
Correct 12 VDC
source to fuse.
Disconnect red
wire from mode
selection switch
to thermostat.
Does fan
operate?
NO
Replace
fan.
Specifications
Is 12 VDC
YES YES
present at
output of 1
amp fuse?
NO
Replace 1
amp fuse.
YES YES
Is 12 VDC
present at
fan thermostat?
NO
Correct 12 VDC
source to fan
thermostat.
YES
Replace
thermostat.
18
Is 12 VDC
YES
present at
input of mode
selection switch?
NO
Correct 12 VDC
source to mode
selection switch.
Is 12 VDC
present at
output of mode
selection switch?
NO
Replace mode
selection switch.
Current Draw: .240 milliamps