Norcold Polar N10LX Service Manual

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Polar Series N10LX, NA10LX
Fault Code - “no” “dt” with Audible Alarm
Possible Cause:
Communications between the User In-
terface (Controls) and the Main Control
Board Assembly (Power Board)have
been lost. The refrigerator will continue
operating in the last “known” operating
MODE and temperature setting.
CODE CODE
Alternately flashes “no” and “dt”
with an audible alarm.
Continuity?
NO (OPEN)
YES
Replace the refrigerator.
Check that the blue wire, within the main
wire harness, is fully plugged in; both at
P1-14 of Main Control Board Assembly
(Power Board) and P1-3 of User Interface
(Optical Display).
NO
Correct connections.
Fully
plugged
in?
YES
With the wire harness unplugged from the
Main Control Board Assembly (Power
Board) and the User Interface (Optical
Display), check continuity of the blue wire
to make sure the wire is not “open”.
Check that there is NO continuity
between the blue wire and ground.
Continuity?
NO
Shorted to ground.
Replace the refrigerator.
YES
Check that there is NO continuity
between the blue wire and any of the
other wires of the wire harness.
Continuity?
NO
YES
Reconnect the wire harness at Main
Control Board Asembly (Power Board)
and the User Interface (Optical Display).
Replace the Main Control Board Assembly
(Power Board).
Shorted to another wire.
Replace the refrigerator.
NOR000796A
Troubleshooting - N10LX AND NA10LX Models, cont’d.

Norcold Polar N10LX Specifications

General

Brand	Norcold
Model	Polar N10LX
Category	Refrigerator
Language	English