Vaillant · ecoTEC pro Boilers
The boiler may shut down or operate with unusual ignition and combustion noise if the incorrect type of gas is being used. This can prevent proper and safe operation of the appliance.
Click steps to track your progress.
Verify that only propane gas G31 is being supplied to the boiler.
Check the gas supply connection and ensure it matches the boiler's specifications.
Affix the enclosed tank sticker (propane quality) to the tank or cylinder cabinet for clear visibility.
If the wrong gas type was used, contact a qualified technician to inspect the boiler for any potential damage and adjust the settings if necessary.