No Hot Water on Gas? Here’s How to Troubleshoot It

If your hot water system isn’t working on gas, don’t worry — it’s usually a quick fix. The steps below will guide you through the most common checks before you contact roadside assistance.

Instructional Video

PDF Version

Step 1: Confirm the Gas Supply Is Working

• Ensure the main gas bottle is turned fully on (counter-clockwise).
• Test your gas stove burners — if they ignite, the gas system is functioning correctly.
• If the stove doesn’t light, your gas bottle may be empty or not connected securely.

Step 2: Open the Gas Shutoff Valve

Each vehicle has a dedicated hot water gas shutoff valve:

• Derwent & Deluxe 4 & 6 Berth:
   Located under the rear bench seat or front bench near the bathroom.

Make sure the valve is fully open (handle aligned with the gas pipe).

Step 3: Turn On the Hot Water Switch (Sandpiper & Rover only)

• Inside the motorhome, locate the 12V control panel.
• Turn on the hot water switch (usually a downward toggle).

This activates the TRUMA gas heating unit.

Step 4: Set the Temperature Sensor Correctly (TRUMA Dial)

1. Locate the TRUMA temperature sensor dial, usually in the kitchen or bathroom.
2. Start with the dial set to the centre (0 / neutral) position.
3. Once the system is ready, turn the dial to 60°C to begin the heating process.

This ensures the system is properly primed before heating begins.

Step 5: Attempt Ignition

• 4–5 ignition attempts may be needed — this is normal after bottle replacement or first use.

You may hear clicking or see indicator lights during the process.

Step 6: Confirm Successful Ignition

• Locate the external exhaust vent on the outside of the motorhome.
• Gently place your hand near the vent — hot air = successful ignition.

Caution: The vent may get hot. Do not touch it directly.

Heating Time

• The water system holds 14 litres.
• Heating to full shower temperature may take up to 30 minutes.

Still Need Help?

If the system still isn’t working after these steps:

Email: roadside@cruisinmotorhomes.com.au

Call: 1300 016 532

We’ll assist you as quickly as possible.