Viessmann boiler error code of
Broken boilers and the expense of repairing them can leave you with very limited options. One option is to buy a new boiler, which is not financially viable for most people. The other option is to get a gas safety certificate and keep your old boiler. The trouble with this is that it may take months before you can get the certificate and if your old boiler breaks, you’ll have no heating or hot water until your gas safety certificate arrives.
The first code that the boiler might give is “0” which means that there is no error. This will happen when the boiler enters standby mode or is simply off, for example. The second code that the boiler might give is “2” which means a person has deliberately turned off the boiler. The third code that it might give is “4” which means serious problems with its water tank or boiler store, which needs to be resolved quickly before it causes more damage to the appliance.
The viessmann boiler error code will detail the different types of errors that can occur while using the product.
The question mark means that the pump is not running. This might be because the boiler has not reached a higher temperature or because there is no water in the pump tank and it has run out of fuel. To remedy this error, leave the boiler for at least 10 minutes to reach a higher temperature before resetting and see if this solves your problem. If you have been running the pump for an extended period without interruption, you will need to refill your fuel tank before continuing use.
This error can occur when a problem is with one of your control board’s relays (1-8). You will need to check which relay has failed by looking at which circuit breaker switches are on, then check which wire corresponds with that circuit breaker switch and replace it if necessary.