Girard GSWH-2 error code E4
Water inlet temperature probe (thermistor) failure — open or short circuit detected on the inlet thermistor when the flow sensor indicates water is flowing
What to check, and in what order, is in the app. The flow Girard GSWH-2 / GSWH-1 / GSWH-2S — error code / symptom diagnostic 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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- Girard_GSWH-2_Service_Manual.txt
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