BoilerFaultCodes
The most common Unical faults
Your boiler's computer memory has been scrambled by electrical interference, which can usually be fixed by simply resetting the system.
Locate the unblock or reset button on your boiler's control panel.Press and hold the reset button for a few seconds to clear the error.If the boiler does not reset, turn the power off at the fused spur, wait one minute, and turn it back on.
Your boiler has temporarily stopped working because it cannot properly read the temperature of the water returning from your heating system.
Full guide for Alkon C 28 HE 14Your boiler has stopped working because the water pressure inside the system has risen dangerously high above the safe limit.
Locate your boiler's filling loop valves or key.Check that both filling valves are fully closed and not letting extra water in.Carefully bleed a radiator in your home to let out excess water until the pressure gauge drops below 1.5 bar.
Your boiler is temporarily stopping because water is not flowing properly through the system, which can cause it to overheat.
Full guide for Alkon C 28 HE 21Your boiler is getting too hot inside because water isn't flowing through the heating system properly, so it has safely shut down to prevent damage.
Full guide for Alkon C 28 HE 15Your boiler has detected that the internal fan responsible for safely pushing out combustion gases is not spinning at the correct speed.
Full guide for Alkon C 28 HE 24Your boiler has temporarily stopped because the internal exhaust fan is spinning much faster than it is supposed to.
Full guide for Alkon C 28 HE 26Your boiler has stopped working because the water pressure inside the heating system has dropped too low.
Locate the filling loop valves beneath the boiler or near the heating pipes.Open the valves slightly to allow mains water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close the filling valves firmly and check the pressure gauge holds steady.
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