Viessmann
Gas Leak at Appliance
Strong smell of gas near the water heater, no error code displayed
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Loose gas union at Viessmann gas valve, Damaged gas flex hose, Faulty gas valve body, Poorly sealed test point
How to Fix / Troubleshooting
Critical safety: Do not operate the heater, use electrical switches, or create sparks. Ventilate the area immediately.
- Shut off gas: Close the main gas shutoff valve to the heater or the building if necessary.
- Do not attempt DIY gas repairs: Gas leaks must be located and repaired by a licensed gas technician using leak detection equipment.
- Evacuate if strong smell: If the smell is strong or widespread, evacuate the building and contact emergency services and your gas supplier.
- Do not relight: Do not restore gas or power to the heater until it has been inspected and declared safe.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Gas Valve Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements