Potterton Suprema 40 Locks out - Fan pproblem ?

rojroj · Nov 28, 2015

I have a Potterton Suprema 40 Boiler. It started making a noise recently which sounds like Fan Noise.
There was some trapped Air in the Air Vent in the Airing Cupboard near he Pump and the Valve. Releasing that helped the Noise a bit. Today, I cleaned the Expansion Tank in the Loft before adding X100, but didn't fill the Tank back ; instead, just filled it till the inlet hole (hoping the full X100 would go in and then I would fill the tank). However, the Boiler locked out (Red lamp blinking). I thought it was due to lack of water, so re-filled the tank, reset the Boiler,but it still locked out. On opening the casing,I found that whenever the relay tries to start the Fan inside the Boiler, it fails and locks out. After I tried turning the fan manually, it started up. So it works for now, but fails to start the fan once in a while and locks up again.
Am I correct in assuming that the refilling of the Expansion Tank has nothing to do with this issue and the fan is on its way out ?
If so, I guess it's not too costly to replace the fan ?

Thanks and Regards

IDCHAPPY · Nov 28, 2015

Doesn't sound realated to be honest. Suprimas have had their day in my opinion.. especially with open vented systems... it's not the dark ages.

ShaunCorbs · Nov 28, 2015

are you gas safe reg if not naughty naughty if you are pm gas man

joni os · Nov 28, 2015

Replacing fan will compromise room seal. Definitely a gas safe job. Given reputation of boiler you might just have time to take out a cover plan before fan fails completely.