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potterson supremo locking out?

i have just rewired my central heating using all honey well parts. since doing this the boiler locks out every so often.please can you help me. the boiler is a potterson supremo
gareth tierney, March 2010
many thanks john on the problem with my potterson locking out, but in this instance it was that the plumber had fitted the 3 port the wrong way round. (numpty)

gareth tierney, March 2010
make sure the pump over runs after demand is satisfied, suprima boards are notorious for failing and constant need to reset is often an indication they are on the way out

john, March 2010