Dometic CFX3 error code ALERT VOLTAGE LOW
CFX3 battery-protection lockout displayed on the TFT screen. The unit measured supply voltage below the active cut-out threshold (HIGH 11.8 V / MEDIUM 11.2 V / LOW 10.1 V). Field experience (not an OEM-published figure): sag through cigarette-lighter pigtails or undersized wiring is a common cause, not necessarily a weak battery.
What to check, and in what order, is in the app. The flow RV Refrigerator — entry diagnostic (absorption + 12V compressor + residential) walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
Start free trial 14 days free, no card neededDocumented in
- Dometic CFX3 25-95DZ Operating ManualDometic