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Error code reference

Atwood Refrigerator Error Codes

12 error codes documented with diagnostic procedures.

Have your model number? Get codes specific to your unit.
CHECK FLASH (Door Open)Fresh food compartment door has been left open for more than 2 minutes; 80ms beeper…CHECK FLASH + GAS ONGAS mode selected and burner failed to ignite within the allowed 40-45 second trial…CHECK FLASH + TEMP1-5 FLASHThermistor is open or shorted; control switches to backup temperature control system…CHECK ON (Stress Initial)Stress monitor fault (initial detection); 720ms beeper sounds every 10 seconds; latched…CHECK ON (Stress Latched)Stress monitor fault after power cycle; latched in nonvolatile memory; no beeper.CHECK ON + AC ON (AC No Supply)AC mode selected but no AC supply is available; 250ms beeper sounds.CHECK ON + DC ON (DC No Supply)DC mode selected but no DC supply is available; 250ms beeper sounds.CHECK ON + GAS ON (Flame Detect)Flame detect circuit offset is too high; detected at power up; 240ms beeper.CHECK+AUTO+GAS+AC+DC ONOpen thermal switch on heat source (canister above burner box reached abnormally high…CHECK+AUTO+GAS+AC+DC ON (Open Fuse)Open fuse F3 (Controller fuse).CHECK+AUTO+GAS+AC+DC ON (Under Voltage)Under voltage condition detected (DC supply below 8V).No Communication from Display BoardNo communication between display board and power board; all heat sources are turned OFF.

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Step-by-step tests, expected values, wiring diagram references, and verified part numbers.

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Common questions

How do I find the error code on my Atwood Refrigerator?
Most Atwood refrigerators show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Atwood refrigerators. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.