Apr 12, 2021 · Make Sure the Electrics Are On. Make certain that all the power switches on the oil burner are set to "on." Also check the heating circuit fuses and the circuit breaker itself. These can be tripped if there's a surge to the electrical system, even if it has nothing to do with your boiler.
If you have eliminated any other causes listed above and you still have heating but no hot water or your boiler heating is not working but the water is, then it is likely that you have a problem with the diverter valve. This is is a valve that opens and closes to provide heat to the radiators or to heat your water.
Gas Boiler Not Heating Water? A NJ Tech Explains Why | Air
No hot water from your boiler? Common reasons why (with
Jul 17, 2019 · If your hot water isn't hot enough, it may be due to your boiler, thermostat, or even the time of year. Whether you have a combi boiler or a hot water cylinder, we'll go through several possible causes. Hot water isn't hot enough – Contents. Combi boiler. The basics; The winter; Limescale & sludge; Faulty diverter valve; Faulty thermistor
My boiler is working but I have no hot water | Viessmann
The next thing that can cause the water not to circulate in the water loop including to the radiators is a hydronic airlock. This is when you get air into the loop. Air will build up usually on a riser or in a radiator. It is necessary to remove the air from the system. Many radiators and even baseboards have manual air bleeders on them.
Dec 21, 2020 · A lack of either electricity or gas to the boiler is the most obvious and common reason for a lack of hot water and will result in you being officially declared a silly sausage for Googling why your boiler is not working.