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14
Refrigerator Service ManualN6XX/N8XX Models
dc HI Fault Code – DC voltage high
dc rE Fault Code – DC relay stuck closed
Before beginning this procedure:
■
Make sure RV DC voltage to refrigerator is 10.5 to 15.4 volts.
■
Determine if the DC HI fault code displays when the converter is the source of DC power.
Models and fault indicator displayed.
Voltage
higher than
15.4 Vdc?
NO
Check RV DC power distribution to
refrigerator.
YES
See NOTE below to determine
and correct low dc HI fault.
Check for DC voltage input
to power board terminals
12VDC and GND1.
N64X/N84X
D
i
s
p
l
a
y
A
l
t
e
r
n
a
t
i
n
g
Audib
le
Alarm
N62X/N82X
LP GASAC
AUTO
Models and fault indicator displayed
N64X/N84X
D
i
s
p
l
a
y
A
l
t
e
r
n
a
t
i
n
g
Replace power board.
See page 44.
DC relay stuck closed.
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).
If the refrigerator circuit is connected to the unfiltered side, the AC ripple
generated by the converter may cause a dc HI fault code to display.
To troubleshoot a dc HI fault, connect a charged 12 volt automotive battery to
the power board. If the dc HI code clears, the fault was caused by unfiltered
DC power. If the dc HI code does not clear, replace the power board.