DRAFTNOT FOR PUBLIC RELEASE34 www.norcold.com/cdaN500/N510 Models Refrigerator Service ManualCooling System Diagnostic Flowchart! WARNING:Do not operate the refrigerator if thecooling unit is leaking or a leak issuspected.! WARNING:Do not bypass or modify the refrigerator’s controlsor components to diagnose the cooling system. Donot wire the heater(s) direct. The heater is suppliedpower through a fused circuit.Check cooling unit.Correct ventilation to meetinstallation requirements .YESNO Check heat input.NONOCorrect heat input device tomeet specifications .YESSigns of leak(s):■ Yellow residue inside or at the rear of therefrigerator.■ Ammonia smell.NOLevel refrigerator as outlinedin Owner's Manual andspecifications.YESContinued on page 35.YESReplace cooling unit.Refrigeratoroperating leveled?Maximum off-level limits:■ 3 degrees side to side.■ 6 degrees front to back.Check (as required):■ AC heater voltage and amp draw.■ DC heater voltage and amp draw.(3-way units only).■ Burner, orifice, flue, deflector cap, flue baffle.■ LP gas pressure.Ventilation asper installationinstructions?Any signs of leak?Heat input deviceoperating withinspecification?
