If a propane/electric absorption fridge cools on 120V AC but not propane, the difference is useful diagnostic information. It does not automatically mean the igniter, burner, gas valve or control board is defective.
Safe checks to make first
- Identify the model: Find the full model, product ID and serial number. Use our label identification guide.
- Confirm LP mode: Check that the controls are requesting propane rather than choosing AC in automatic mode.
- Check normal propane indicators: Confirm the RV supply is available and the main valve is open only when it is safe; do not loosen fittings or attempt gas-pressure tests.
- Record the exact alert: A no / FL display on specified Norcold Polar models refers to ignition failure, but other model codes differ. Use the model-specific error-code guide.
- Follow the correct manual: Some Norcold controls describe a limited restart after air in the gas line. Do not repeat unsuccessful ignition attempts beyond the manufacturer's directions.
What to record for a technician
| Observation | Useful detail |
|---|---|
| Cooling on shore power | Did cooling recover after several hours on AC? |
| Selected propane mode | Exact display text, indicator colour or blink pattern |
| Fuel-system status | Normal supply indicators and any related appliance issue |
| Safety warning | Unusual odour, soot, overheating or repeated shutdown |
Should I buy a burner or gas valve straight away?
No. Several different causes can lead to a gas ignition lockout or poor performance. Determine the correct fault and part number through the manufacturer's diagnostic process.
Can I clean the burner or adjust propane pressure?
Combustion adjustments, burner orifice work and gas-pressure measurements should be handled by qualified RV service personnel.
Shop by confirmed part number
Check the published refrigerator diagrams, then browse used refrigerator parts or new control boards as appropriate.
Manufacturer sources checked: Norcold Polar operating instructions 639300K and Norcold Model 1200 owner's manual 621823J discuss LP ignition lockout and maintenance precautions.
Important safety note: If you smell propane, leave the area; do not operate electrical switches or ignition sources. Contact your gas supplier or emergency services as appropriate. Do not defeat gas-safety devices.
Find the correct part, not just a similar-looking one
Use the published OEM refrigerator diagrams, then check the exact model, product ID and applicable serial range. If uncertain, send us the label photo and old part number. Do not assume that a symptom proves a specific part has failed.