When your Girard GSWH-2 tankless water heater stops delivering consistent hot water -- or triggers erratic shutdowns -- a failed outlet temperature probe is often the culprit. This OEM Lippert replacement (part 11-9105, model 2GWH-28) puts accurate temperature sensing back in place so your heater can regulate output properly and protect against overheating.
The Girard GSWH-2 is a demand-style tankless propane water heater found on a wide range of RVs and fifth wheels. Its control board relies on the water outlet temperature probe to continuously monitor heated water before it reaches your faucets and shower. If that sensor drifts out of calibration or fails entirely, the heater may short-cycle, produce inconsistent temperatures, throw a fault code, or shut down as a safety precaution.
The 2GWH-28 is the direct OEM replacement probe for the water outlet position on the GSWH-2. Replacing a worn or failed probe is one of the most straightforward GSWH-2 service procedures -- no special tools required -- and restoring a good sensor reading is frequently all it takes to clear a recurring fault and get the unit back to normal operation.
Designed specifically for the Girard GSWH-2 tankless heater. Plug-and-play replacement with no wiring modifications needed.
Monitors heated water at the outlet, giving the GSWH-2 control board accurate data to regulate burner output and prevent overheating.
A functioning probe is a key part of the GSWH-2 safety circuit -- a failed sensor can cause nuisance shutdowns or, if ignored, unprotected operation.
Manufactured domestically and sold under the Lippert / Girard brand. Lightweight at 0.2 lbs -- easy to stock as a spare.
The 2GWH-28 is the water outlet temperature probe. The GSWH-2 uses separate sensors for inlet and outlet positions. Confirm which probe has failed before ordering -- the outlet probe monitors water leaving the heat exchanger and is the sensor most directly responsible for temperature regulation at the tap.
Before removing the probe, shut off the propane supply and allow the water heater to cool completely. Turn off the water supply and relieve line pressure before disconnecting the probe from the water circuit. The GSWH-2 control board may need to be power-cycled after probe replacement to clear stored fault codes.
If you are performing seasonal winterization or a full GSWH-2 service, inspect the probe connector and wiring harness for corrosion or cracked insulation at the same time. Connection issues at the harness can mimic a failed probe and are worth ruling out before replacing parts.