HEX: 06 - Heating unit overheated

Fault Details:

• Overheat protection has been activated, or the heat exchanger temperature has exceeded the upper limit.

Recommended Solution:

1. Inspect the air intake and blow-out side of the heater for debris or blockages.

2. Check the exhaust system — ensure the maximum length is not exceeded, and there are no bends, blockages, or clogs.

3. Check fuel line connections for damage.

4. Test the fuel pump by applying 12 V to the pump pins in 1-second intervals; listen for clicks.

Note: Fault code meanings can vary depending on the model and controller. If you’re unsure, contact Heatso directly.