Girard 2GWH-24 Replacement Water Flow Sensor for GSWH-2 Tankless Water Heaters

The Girard 2GWH-24 Water Flow Sensor is a replacement part designed for the Girard GSWH-2 tankless RV water heater. The sensor detects when water begins flowing through the heater and signals the system to start the ignition and heating sequence.

A damaged, restricted or malfunctioning flow sensor may prevent the water heater from recognizing that a hot-water faucet has been opened. This can result in no ignition, intermittent burner operation or hot water that stops unexpectedly during use. Replacing a confirmed faulty sensor can restore proper water-flow detection and dependable on-demand hot-water operation.

This is a model-specific replacement component rather than a universal RV water-heater flow sensor. Girard and Lippert identify it as part 2GWH-24, SKU 2022107584.

Models It Fits

• Girard GSWH-2 Tankless RV Water Heater

Girard part number: 2GWH-24
Lippert part number: 2022107584

Verify the water-heater model and existing part number before ordering.

Signs You May Need This Part

• The water heater does not activate when a hot-water faucet is opened

• Water flows normally, but the burner does not ignite

• The heater only activates when the faucet is opened completely

• Hot water starts and stops during use

• The burner shuts off even though water is still flowing

• The water heater operates intermittently

• The system fails to detect lower water-flow rates

• The sensor is visibly cracked, leaking or physically damaged

• Electrical testing confirms the sensor is not sending a flow signal

• Mineral buildup or debris has restricted movement inside the sensor

Similar symptoms can also be caused by low water pressure, a clogged inlet filter, restricted plumbing, damaged wiring, an ignition problem or a faulty control board. Confirm that adequate water is flowing through the heater before replacing the sensor.

Estimated Installation Time

Approximately 30 minutes to 1 hour.

Installation time may vary depending on technician experience, water-heater accessibility, plumbing condition and whether the complete water heater must be removed for access.

The water supply, propane and electrical power should be shut off before installation. After replacement, the plumbing system should be pressurized and carefully inspected for leaks before the water heater is returned to service.