Aqua-Hot AHE-400-D02 error code AC ELEMENT NO HEAT
Diesel burner operating normally but the 120 V AC element does not contribute heat. AC element has failed open, the element relay is not energizing, or the AC supply at the pedestal is missing.
What to check, and in what order, is in the app. The flow Aqua-Hot — AC Electric Element Not Heating 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 AHE-400-D02 Parts ManualAqua-Hot
- Aqua-Hot 400D Use & Care GuideAqua-Hot
- Aqua-Hot Heating Systems Service Manuals — aquahot.com
- Aqua-Hot Tech Support 800-685-4298 (Fort Lupton, CO)
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