Step 1: Take a photo of the error
Please take a photo of:
☑ Error code
☑ Truma display
This helps us identify the issue faster.
Step 2: Check your battery level
Low battery power is one of the most common causes of Truma issues.
Check:
☑ Is your leisure battery switched ON?
☑ Does the battery level look healthy?
If battery is low:
• Connect to campsite electricity
OR
• Drive for 30–60 minutes
Then retry.
Step 3: Check the gas supply
If your heating or hot water uses gas:
☑ Is the gas bottle turned ON?
☑ Is there gas remaining?
Recently changed the bottle?
Air can sometimes enter the gas lines.
Try lighting the cooker for a few seconds and retry.
Step 4: Restart the system
Try a simple reset:
Turn Truma OFF
Wait 2 minutes
Turn camper power OFF
Wait 30 seconds
Turn camper power back ON
Turn Truma back ON
Step 5: Common examples
Some examples:
E212H → Gas supply issue
E517H → Low battery voltage
W255H → Temporary communication issue
Many temporary warnings disappear after restarting.
Step 6: Still not working?
Still need assistance? Contact us via our website chat and send:
☑ Photo of error code
☑ Photo of Truma display
☑ Short description of issue