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So would the most likely cause be the microswitch or the diverter valve diaphragm? To me it seems more probable that its the microswitch given the boiler firing up regularly without call?

No signs of dirt at all, the pin seems free on the dhw side. I have not had the DV valve in bits yet, would signs of dirt/water cause the boiler to fire up every five to ten minutes with no call for heat or hot water as this has been happening. Why do you need to change the water diaphragm...

I've just been at the back of the fridge and felt the compressor, which was red hot, this I imagine is activating the thermal cutout. Is this sort of temperature normal for a compressor, especially one so young? What could be the root cause of this?

I have an Indesit A+class upright fridge freezer, under 18 months old which seems to have completely ceased working. The fridge will only get luke warm and the freezer section is keeping the food only half frozen. I have removed the thermostat and linked out the wiring to eliminate this as a...

Based on this diagnosis, would you advise a new diverter valve or is it likely that this can be overcome with a new diaphragm? As I have found a diaphragm set for £12.50 and the entire valve is about £100!

For some time the boiler has been firing up every ten minutes or so, for about fifteen seconds even though there has been no call for heat or hot water. Could this also be attributed to a faulty diverter valve?

MY BOILER IS A HALSTEAD FINEST COMBI AND IT SEEMS TO TAKE AN ETERNITY TO GET HOT WATER. I HAVE TAKEN THE MICROSWITCH ASSEMBLY OFF AND OPERATED THIS MANUALLY AND THIS MAKES THE BOILER FIRE UP STRAIGHT AWAY. THE PROBLEM SEEMS TO LIE WITHIN THE ASSEMBLY WHERE THE LITTLE FLOW OPERATED PLUNGER COMES...

MY PARENTS ARE MOVING FROM A THREE BEDROOMED HOUSE TO A PARK HOME AND HAVE BEEN TOLD THAT THEY WILL NEED THE JETS ADJUSTING ON THEIR EXISTING GAS COOKER TO COMPENSATE FOR THE CHANGE FROM MAINS GAS TO CALOR GAS. IS THIS THE CASE AND IF SO HOW IS IT DONE AND IS IT A CORGI JOB? CHEERS!

MY PARENTS ARE MOVING FROM A THREE BEDROOMED HOUSE TO A PARK HOME AND HAVE BEEN TOLD THAT THEY WILL NEED THE JETS ADJUSTING ON THEIR EXISTING GAS COOKER TO COMPENSATE FOR THE CHANGE FROM MAINS GAS TO CALOR GAS. IS THIS THE CASE AND IF SO HOW IS IT DONE AND IS IT A CORGI JOB? CHEERS!

:D Boiler fixed, removed the fan assembly and gave it a good clean out and it's working fine. Thanks to everyone who took the time to give their advice!

Sounds expensive, do I need to buy a whole fan assembly or can I refurbish the existing one. If so can anyone recommend a good (cheap) parts supplier. Thanks

Thanks Chris, I tried shorting the wires out on the air pressure switch and it fired up first time, do I now need to replace the switch or am I looking for an air blockage elsewhere?

Cheers Corgiman, would you recommend replacing the thermistors first? Or is it a straight to PCB renewal job? Any idea why it doesn't even try to spark and goes straight to lockout.

Firstly, the overheat thermostat hadn't cut out. The pressure gauge reads approx 1.5 bar The boiler hasn't been lower than 1.0 bar, and didn't need refilling after bleeding the rads, there was hardly any air in them. I have checked the fan, which is running, the pump feels like it is pumping...

Any likely suspects for the overheat problem?

Is there a possibility of air in the pump and if so how do you bleed it? I bled all the radiators and this had no effect.

I'm referring to flow chart 1 on page 27 of the manual, I think I may have misread the diagram slightly, I veered off where it says 'is the green light illuminated', the green light stays on and the constant red light comes on and stays on immediately.

-The red light is constant -The fan starts up and stays on -Pump, not sure if it starts up or not -The flow diagram is in the manufacturers manual for the boiler.

MY (APPROXIMATELY 5 YEARS OLD) HALSTEAD FINEST COMBI BOILER SAFETY LOCKOUT LED IS CONSTANTLY SHOWING RED AND THE IGNITION ELECTRODE DOESN'T EVEN ATTEMPT TO SPARK. I HAVE CHECKED THE TROUBLE SHOOTING GUIDE IN THE MANUAL, WHICH SAYS CHECK THE SUPPLY VOLTAGE AND THE PCB FUSES - WHICH ARE ALL...