Fiat 2 Berth - Troubleshooting: Hot Water System Not Working on Gas

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

1. Ensure the main gas bottle is turned fully on (counter-clockwise).

2. Test your gas stove burners — if they ignite, the gas system is functioning correctly.

3. If the stove doesn’t light, your gas bottle may be empty or not connected securely.

Step 2: Open the Gas Shutoff Valve

The hot water system has a dedicated gas shutoff valve:

1. Located on the rear passenger side under the vehicle, In line with the hot water exhaust.

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

Step 3: Turn On the Hot Water Switch

1. Inside the motorhome, locate the 12V control panel.

2. Turn on the hot water switch (usually a downward toggle).

3. Turn on the water pump switch if using tank water (usually a downward toggle).

4. This activates the TRUMA gas heating unit.

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

1. Locate the TRUMA temperature sensor dial below the 12V control panel.

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.

4. This ensures the system is properly primed before heating begins.

Step 5: Attempt Ignition

1. 4–5 ignition attempts may be needed — this is normal after bottle replacement or first use.

2. You may or may not hear a clicking noise during ignition.

3. Indicator lights may activate during the process.

Step 6: Confirm Successful Ignition

1. Locate the external exhaust vent on the outside of the motorhome.

2. Gently place your hand near the vent — hot air = successful ignition.

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

Heating Time

1. The hot water system holds 14 litres.

2. A full tank can finish within 2 minutes of shower use.

3. Heating to full capacity 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.