Norcold Polar N7V Service Manual page 54

DIAGNOSTIC MODE - N7LX AND N8LX MODELS,
Cooling System Diagnostic Flowchart, cont'd.
Repair/replace door as
required.
Replace cooling unit.
Replace cooling unit.
Unit is operating normally.
NOR000797A
Polar Series N7V, N7X, N7XL / N8V, N8X, N8XL
YES
Continued from previous page.
Check condition of door gaskets.
NO
Door gaskets
sealing properly?
YES
Recheck cooling unit for leaks.
YES
Any signs of
leakage present?
NO
Test cooling unit
performance.
NO
Cooling detected?
YES
Refrigerator
YES
temperatures
normal
?
NO
Contact Customer Service
54
Visual and audible signs of leak(s):
Yellow residue on the rear of the refrigerator.
Ammonia smell.
Gurgling noise (not always present).
Cooling unit performance test:
1. Disconnect thermistor from the wire harness.
2. Set temperature setting to the coldest setting.
3. Place thermometer in freezer.
4. Allow unit to operate for 3-4 hours.
5. Measure temperature.
The back of the freezer plate
should be cool after 3-4 hours of
continuous operation.
Temperatures given below are based on 90°F ambient
temperature, correct ventilation, and operation at coldest
setting for a period of 8-12 hours.
Freezer -5°F to -10°F.
Fin temperature 18°F to 25°F.
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