Girard GSWH-2 error code E7
Linear (modulating) gas valve failure — controller detects open circuit in linear valve control circuit before ignition or during normal operation
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 Tankless Water Heater Service ManualGirard
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