Troubleshooting - Quick Reference Guide - Norcold N500 Service Manual

Problem
The refrigerator does not turn ON.
The refrigerator does not cool on
ac power.
The refrigerator does not cool
efficiently on ac power.
3-Way Units Only
The refrigerator does not cool on
dc power.
3-Way Units Only
The refrigerator does not cool
efficiently on dc power.
The refrigerator does not operate
on LP gas.
The refrigerator does not
cool efficiently on LP gas.
Poor or no cooling.
N500/N510 Models

TROUBLESHOOTING - QUICK REFERENCE GUIDE

Possible Cause
No 12 Vdc power to refrigerator.
Faulty/loose 12 Vdc connections.
F1 fuse in power board open.
No ac power to refrigerator.
F3 fuse or ac heater inline fuse open.
AC heater failed open.
Ventilation obstructed.
AC voltage low.
F2 fuse or dc heater inline fuse open.
DC heater failed open.
Ventilation obstructed.
DC voltage below 12 volts.
No LP gas.
Incorrect electrode-to-burner gap.
Faulty spark/sense electrode assembly.
Flame sensing circuit failure.
Ventilation obstructed.
Incorrect LP gas pressure.
Dirty burner.
Missing flue baffle.
Flue cap blocked.
Poor ventilation.
Off-level operation.
Dirty burner.
Low ac voltage.
Cooling fan inoperative (if present).
Improper installation.
Incorrect orifice.
www.norcold.com/cda
Checks/Reference
See page 13 (N510).
Check 12 Vdc connections.
Check fuse (N510).
See page 9 (N500).
Check fuse.
Check heater resistance and continuity.
Check enclosure for air flow obstructions.
Check ac voltage input.
Check fuse.
Check heater resistance and continuity.
Check enclosure for obstructed air flow.
Check dc power input.
Check LP gas supply and valves.
Set electrode to 3/16 in.
Replace spark/sense electrode. See page 41.
Replace power board (N510). See page 43.
Check enclosure for obstructed air flow.
Set gas pressure to 10.5 to 11.5 in. w.c.
Clean burner. See page 28.
Replace flue baffle. See page 26.
Clear flue cap. See page 26.
Check enclosure for obstructed air flow.
Level unit. See page 32.
Clean burner. See page 28.
Check ac voltage input.
Test fan operation.
Check installation. See pages 21 and 22
and N500/N510 Installation Manual.
Install correct orifice (LP10).
Refrigerator Service Manual