Girard GSWH-2 error code E8
Air pressure switch fault — switch not detected closed for 7 seconds before ignition, or opened for 2 seconds during normal operation. Blower must create negative pressure at the 'petit tube' pickup to close the switch.
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.
Start free trial 14 days free, no card neededDocumented in
- Girard_GSWH-2_Service_Manual.txt
Related codes
- E4Water inlet temperature probe (thermistor) failure — open or short…
- E5Blower motor failure — no motor signal detected by the control board…
- E6Over-temperature — outlet thermistor measured water temperature above…
- E7Linear (modulating) gas valve failure — controller detects open…
- E9Flame sensor short — flame sensed BEFORE ignition attempt (buzzer…
- EnSystem Timer — water heater ran continuously for 20 minutes. Safety…
- FdWinter Use Device (WUD) engaged — bimetallic thermostat on the hot…
All Water Heater — Tankless error codes · Look up another code