Girard 2GWHAM fault codes
The 8 fault codes below are the ones that apply to this Girard water heater family. The other 3 Girard water heater codes in our database belong to different model families — they are listed further down so you do not troubleshoot against the wrong table.
Covered model numbers
2GWHAM
Not on the list? Check the rating label before you troubleshoot — the code table below will not apply. Where to find it →
Fault codes on the Girard 2GWHAM
The outlet (hot side) water temperature sensor reads an invalid value. The control board s… E1 warning
Ignition failure. The igniter sparked but the board never confirmed a flame, so after its … E2 warning
Flame sensing was interrupted during normal operation. The burner had lit, but the board l… E3 warning
The ECO — the over-temperature cut-off thermostat — opened, either before ignition or duri… E4 warning
The inlet (cold side) water temperature sensor reads an invalid value while water is flowi… E5 warning
Blower/fan motor fault. The control board commanded the combustion blower to run but recei… E6 warning
Over-temperature. The outlet water temperature exceeded 60 °C (140 °F) for three seconds a… E8 warning
Air pressure (vacuum) switch fault. The switch that confirms the blower is moving air did …
Codes that do not apply to this model
These 3 codes exist on other Girard water heaters. If your unit is showing one of them, it is not from this family — re-check the model number on the label before acting on any of these.
Linear valve failure. The controller detected an open circuit in the linear gas valve cont… E9
Flame sensor fault, and specifically the inverted case: the board sees a flame signal *bef… En / End
Not a fault. This is the system timer: the board ends the burn after 20 minutes of continu…
Where the model number is
On the data plate behind the outside access door, next to the burner tube — bring a torch, it is often sooted over.
Sources
- Girard Products GSWH-2 Technical Manual — Girard Products / ManualsLib (GSWH-2 Technical Manual, E8 air pressure switch not detected for 7s before ignition / cut-off 2s during operation)
- Girard GSWH-2 Tankless Water Heater Technical Manual and Troubleshooting Guide — Manuals.plus (Fault code list, E8 air pressure switch; faulty motor or air/exhaust blockage)
- Girard GSWH-2 Technical / Service Manual (Model GSWH-2) — Girard Products (hosted by RV Upgrade Store) (GSWH-2 Service Manual, fault code E1 Ignition failure (trial for ignition / purge sequence))
- Technical Manual — Girard GSWH-2 Demand Tankless Water Heater — Girard Products (Lippert) (Error Codes on User Control Panel; Troubleshooting sections)
- Girard GSWH-2 E5 Code (owner discussion citing manual) — Keystone Forums (E5 blower motor / no motor signal troubleshooting per technical manual)
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