Many things will cause your boiler to stop now working.
For instance, if your gas supply runs low, then your boiler will not turn on.
In this case, you should check your gas supply by turning on any other gas appliances that you have. If the other appliance works regularly, you can check the main fuse box to be sure it has not tripped, as this could be why your boiler is no longer working right. If you use a prepaid meter, check whether you still have credit. If there was a power stoppage, check whether the boiler timer was reset because power outages can reset the boiler timer inner settings. Reprogramme your boiler to learn the typical date plus time. If your boiler water pressure gauge shows a single bar or less, your boiler’s pressure might be too low to function very well. You will need to top up your boiler pressure for it to function well. You can also switch on your boiler plus increase your control unit’s setting to above 21 degrees. Your boiler may not switch on if your control unit setting is lower than 21 degrees. Check your control unit settings to make sure it’s at “heat” plus not set to “cool” or turned “off.” When the control unit’s setting is at “cool,” the boiler will not turn on even if the temps drop below the set temperature. Check if the gas valve is open or closed. Ordinarily, a closed off gas valve will prevent the boiler from turning on. A gas boiler also uses a very small amount of electricity to run. The blower motor plus ignition idea need electricity to operate. If any of the boiler components cant start, the process automatically stops. Check the main electrical panel to make sure the circuit breaker is in the “ON” position. Also, check whether the boiler will beginning running shortly afterward; but, when the circuit breaker trips instantaneously the boiler starts now working, contact an Heating plus Air Conditioning business for professional help.