Dometic CRX (Secop BD electronic unit) error code 5 blinks (Secop BD)
Thermal cut-out / electronic unit over-temperature. The Secop electronic unit sensed its own temperature above the safe-operating limit. Always an environmental issue - poor compressor-compartment ventilation, blocked vents, or ambient above approximately 110 deg F.
What to check, and in what order, is in the app. The flow Secop BD Compressor Fault — Universal 5-Code Chart (Dometic CRX / Vitrifrigo / Whynter) 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.
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- Secop BD Controllers Operating Instructions (101N0212-650)Secop
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