Refrigerator Will Not Operate On Dc - Norcold 3163 Service Manual

Is circuit breaker
YES
Is selector
switch set
to DC?
NO
Set selector
switch to DC
and start
refrigerator.
DC Voltage: 11.5 - 15.4 VDC
Refrigerator Will Not Operate on DC Electric
NO
tripped or fuse
blown? (DC
to refrigerator)
YES
Reset circuit
breaker/replace
fuse & start
refrigerator.
YES
Replace
DC heater.
Specifications
Current Draw: 11.7 - 13.6 amps
NO
Are there
loose wire
connections?
YES
Repair loose
connections
and start
refrigerator.
YES
Is 12 VDC at
output of
selector switch?
NO
Replace
selector switch
& start
refrigerator.
Heater Resistance: .95 - 1.05 ohms
12
YES
Is 12 VDC at
terminal block?
NO
Correct DC to
terminal block &
start refrigerator
11.5 VDC min..
YES
Is 12 VDC at
input of
selector switch?
NO
Correct DC
source
to switch.
YES
Is 12 VDC to
input of 20
amp fuse?
NO
Correct DC
source to fuse.
Is 12 VDC at
output of fuse?
NO
Replace 20
amp fuse.