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I have a Ravenheat combi boiler LS80. The tap water heats up fine. The radiators don't heat up at all, In fact it doesn't ignite and the pump doesn't engage. The pressure is constant (1.5). The radiators are bled. which makes me think its possibly the timer/clock not working correctly...

I have a split in my exterior door aperture seal does anyone know who sells them.

cheers dcawkwell I will have a look at the diverter valve. The problem couldn't be anything to do with the relay could it. before I changed the first thermister and while the heating was switched to on the relay clicked and the boiler lit up only while triddling with the thermister.

I have a Ravenheat Combi boiler(2003) the radiators are not working. I have changed both thermisters and the tap water heats up fine. I have bled the radiators and the pressure stays constant at 1.5 Any idea's what it could be?