Recent content by ianshearer

After an experienced professional had a look at this and did not find an obvious fault, I paid for an Alpha fixed price repair, very fast response, he replaced the main PCB, which was pretty much the only thing not either replaced or well checked out. ~It was expensive, but no more than some...

"If the overflow has been running all night, you have NOT switched off the filling loop properly. " Blind leading the blind, was it? :)

Has the overflowing water stopped? That has happen first. If it is still overflowing, it means the filing loop is still letting water in. If it is still overflowing, try the filling knob at both extreme positions, and give it a minute to have an effect Once the overflowing has stoped, you...

If the overflow has been running all night, you have NOT switched off the filling loop properly. You have done what I did, and turned the filling loop taps full on instead of off. Find the tap which is on the mains water side of the filing loop, probably the narrow half inch pipe. Put it...

I have been in this position before myself, I had turned the fill valve full on, instead of full off ( It only hisses when it is partially open, full open it is silent, and I thought I had it in the off position. The over pressure valve then opened at 3 bar, so the pressure never drops below 3...

As Dave said, the ch thermistor was a bit high resistance compaired to the new one I got and fitted today, time will tell if it stays fixed, fired up ok, but sometimes it would. Cheers for that Dave

Time to get someone qualified and experienced? Gas2Air, Yes it is, but they are hard to find, and unfortunately the qualified and experienced person I thankfully came across and normally get is, quite rightly, on holiday, and my lodger is freezing, so I feel I should be doing something. I...

Just to finish this thread off, for the sake of anyone doing searches for similar symptoms, the problem got a bit better by itself, so I left it short cycling occasionally, but essentially working. Recently it packed in completely, refusing to light. cleaning the fan blades got things going...

Dave, I guess it fails when the boiler is hot, as it is likely to start up ok when switched off and on when, found to be cold and not working The sensor measured 14k at a (chilly) room temperature, warming it up in situ with a cigarette lighter, it goes to 13k and then rises slowly to 14 as...

Symptoms:- Pilot lights ok when gas valve depressed, fan goes to high speed, pilot lights. On CH demand, pump runs, primary flow switch operates, but fan does not go to high speed- except that sometimes it does. It will then cycle as expected for an hour or 2 , then fail to start and sit...

I don't know for sure yet that the pipe is 15mm all the way from the meter, it's an assumption at the moment that fits the observable facts. If I understand things correctly, the gas valve max pressure set to low would give the same symptoms of too low a gas consumption, so no point me finding...

Geeze guys, I implied it was a fault because that is what I thought it was. The boiler is in a flat my son lives in, he had been there for 6 months before he mentioned the hot water in the kitchen ran cold sometimes. With the CH on (which gets hot fine) you get a big slug of hot water from...

bengasman, I think you have put your finger on it, the helpfull guy a Ferroli replied to my email:- "14 metres of 15mm tube will pass slightly over 1m3/hr. To operate correctly the F30 requires 3.5m3/hr." one third of the gas the boiler needs would explain how it is behaving, Thanks to all...

Had a 4 hour session with my beloved boiler last night:- I have checked the APS, safety stat, low water pressure switch and the CH limit stat. I have removed and checked the PCB for visual damage or dry joints. I have replaced the DHW flow temp sensor with a 20K ohm variable resistor, and...

That's interesting, I would have expected low pressure in the CH loop would have affected the CH, or tripped the pressure switch and stoped everything. Have to wonder what is going on for that to effect the DHW? I will check the low pressure switch, although there is no warning light, and the...