Norcold N64XIM User Manual
www.norcold.com/cda
13
N6XX/N8XX Models
Refrigerator Service Manual
S/Sr Fault Code – Flame sense circuit failure
dc LO Fault Code – Low DC voltage
Models and fault indicator displayed.
LP GAS
AC
AUTO
Replace power board.
See page 44.
See page 44.
Flame sense circuit failure.
N62X/N82X
N64X/N84X
Before beginning this procedure:
■
Make sure RV DC voltage to refrigerator is 10.5 to 15.4 volts.
■
Determine if the DC LO fault code displays when the converter is the source of DC power.
■
Make sure no other appliance or lighting circuit is connected to the refrigerator DC circuit.
Models and fault indicator displayed.
N64X/N84X
Display
Alter
nating
Voltage
lower than
10.5 Vdc?
NO
Check RV 12 Vdc power supply to
refrigerator.
refrigerator.
YES
See NOTE below to determine
and correct low dc LO fault.
and correct low dc LO fault.
Check for DC voltage input
to power board terminals
12VDC and GND1.
to power board terminals
12VDC and GND1.
Audib
le
Alarm
NOTE
Electronic controls operate on 12 Vdc. When an AC/DC converter is used to
supply DC power, the refrigerator circuit must be connected to the appliance
output terminals of the converter (filtered side).
supply DC power, the refrigerator circuit must be connected to the appliance
output terminals of the converter (filtered side).
If the refrigerator circuit is connected to the unfiltered side, the AC ripple
generated by the converter may cause a dc LO fault code to display.
generated by the converter may cause a dc LO fault code to display.
To troubleshoot a dc LO fault, connect a charged 12 volt automotive battery
to the power board. If the dc LO code clears, the fault was caused by unfiltered
DC power.
to the power board. If the dc LO code clears, the fault was caused by unfiltered
DC power.
If the dc LO code does not clear, replace the power board.