Aqua-Hot error code OVER-TEMPERATURE
Tank temperature exceeded the 215 degF high-limit trip (AHE-250 Service Manual: the high-limit thermostat opens when the boiler tank reaches 215 degF to stop heating). On Reporter-equipped Aqua-Hot units this surfaces as an OVER-TEMPERATURE fault.
What to check, and in what order, is in the app. The flow Aqua-Hot Reporter — Fault Screen Triage 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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- Aqua-Hot 200-Series 250P/250D Service ManualAqua-Hot
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