RV appliance fault codes, decoded.
Your fridge, furnace, water heater, A/C, leveler or inverter just threw a code or a blink pattern. Type it in — get the meaning, the most likely causes, the safe checks to try, and exactly how to reset. Free, no signup.
- 297 codes
- From manufacturer manuals
- 27 brands
- Always free
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Recently verified
Codes we checked or rewrote most recently against manufacturer documentation — last on 2026-09-23.
Atwood water heater — On Atwood DSI (Direct Spark Ignition) water heaters there is no multi-… Error code 6 2026-09-23
Thetford refrigerator — The 12 V supply is outside the permitted window. This is a supply faul… AC rE / Sr CL 2026-08-30
Norcold refrigerator — The AC relay on the rear power board is stuck closed, so the control c… Sr FS / Sr 2026-08-30
Norcold refrigerator — The flame-sense circuit inside the control has failed, so the refriger… E1 2026-08-09
Girard water heater — Ignition failure. The igniter sparked but the board never confirmed a … E3 2026-08-09
Girard water heater — The ECO — the over-temperature cut-off thermostat — opened, either bef… E6 2026-08-09
Girard water heater — Over-temperature. The outlet water temperature exceeded 60 °C (140 °F)… E8 2026-08-09
Girard water heater — Air pressure (vacuum) switch fault. The switch that confirms the blowe…
Why RVCodeFix
Most RV fault-code answers are buried in 40-page forum threads or locked behind paywalls. We compile the factual code → meaning mapping straight from manufacturer service documentation into one clean, fast, free reference — every page with ranked causes, safe DIY checks, the reset procedure, cited sources and a clear “when to call a tech” line. 297 codes across 27 brands, and growing.