Error codes › Water Heater — Tankless › Truma AquaGo (comfort/comfort plus) › W27 (flash: 3s,2l,1s,2l)
Truma AquaGo (comfort/comfort plus) error code W27 (flash: 3s,2l,1s,2l)
Circulation pump running dry — no water flow detected. Pump retries 20 times at 30 s intervals; error clears on first success
What to check, and in what order, is in the app. The flow Truma AquaGo — error code / symptom diagnostic (DLE60B / DLE60C / DLE60CP) 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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- Truma_AquaGo_Basic_Comfort_ComfortPlus_Operating_Installation_Instructions.txt
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