Viessmann boiler error 18
Viessmann Boiler Error 18 is a problem that causes a boiler to stop working. It’s an issue with the PowerPC microprocessor, part of the control system. There are no immediate solutions for this issue, so it’s best to contact your boiler manufacturer for more information on how to fix this problem.
When this error occurs, likely, the boiler is not pumping hot water.
Error code 18 indicates a blockage in the hot water feed pipe. To rectify the problem, please unblock the feed pipe.
Two of the most common symptoms of this error are that water is not flowing from your taps or not heating up as it should be.
This error is not very common, but when it happens, it is usually because of a faulty gas valve.
This maintenance error is caused by a fault in the gas valve and can be remedied by replacing the faulty part.
“Inspections, Installations, Repairs & Maintenance”