i was warned I'd be seeing more of the plumbers.... came true last Thursday didn't it, 14 months on from a boiler with a 12 month warranty.
the house is rented, so i had absolutely no control over what boiler was fitted, it was replacing a Hallstead finest gold that had been dead for 8 months, so i was just glad of a boiler that worked.....
Have been getting intermittent RCD trips for the past few weeks, until Thursday when they were happening every 3 or 4 minutes.
finally tracked it down to when the boiler is trying to fire up.
It begins it's start sequence, pump and fan start, but as soon as it tries the igniter, click, off goes the electric.
Had a heating engineer out, landlord couldn't get the ones out who fitted it, they are too busy... prolly fixing all the other ravenheat boilers they fitted last year to his other properties,
Bloke went thru the fault flow chart, everything points to the main board, tried it with the igniter lead unplugged from the igniter transformer/coil on the board, still trips the RCD.
I'm now waiting for the new main board to arrive and the bloke to get the go-ahead from the landlord to fit it, tho i am half expecting the problem to still exist after a new main board, read that they are about 200 quid, the whole boiler was only £380 (as i got a copy of the invoice to the landlord when it was fitted)
Don't suppose anyone has experienced this problem before? just in-case the new main board doesn't fix the fault, as it's down to 6 degrees in the house, and I'm basically stuck in the bedroom as the only place i have a fan heater,
i read about the return from the igniter goes through the condensate full switch, which apparently just allows the signal to go to earth if the trap is full, could cause the problem if the RCD is over sensitive i guess, but it shouldn't do it with the main igniter lead disconnected should it?