T
teecee90
Forgot to mention that when the room thermostat gets up to temperature and clicks off, the boiler starts to get noisy and clancks and bangs before overheating and tripping out to F5 error.
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It's an easy check, but must be carried out by a gsr engineer if checking at the boiler or an Electritian with heating experience.
to prove your theory ( likely to be correct) it's a matter of checking if the boiler is receiving a switched live after everything is turned off.
your plumber should have checked for this.
to prove your theory ( likely to be correct) it's a matter of checking if the boiler is receiving a switched live after everything is turned off.
your plumber should have checked for this.
It seems like it's been wired so the stat kills the power to the pump and it never gets pump overrun.
T
teecee90
Update
Well....its taken about 6 weeks but the problem is finally fixed (fingers crossed). After getting a second opinion the first plumber confirmed a faulty 2-way CH valve and has today replaced it free of charge. They still claim that the replacement Pump and PCB was necessary but have given me a £100 refund as a goodwill gesture. Everything seems to be working well now.
Replacing the CH valve was quite a big job though as the valves are tucked behind the HW cylinder meaning the cylinder had to be disconnected and moved out of the way to get access to replace the valves. Apparently a really bad design when the house was built.
I had the HW vale replaced at the same time as a precaution. The new valves are apparently serviceable without having to be removed so if they develop another fault later they can be repaired without having to remove the HW cylinder.
Thanks to everyone that contributed to the thread.
Well....its taken about 6 weeks but the problem is finally fixed (fingers crossed). After getting a second opinion the first plumber confirmed a faulty 2-way CH valve and has today replaced it free of charge. They still claim that the replacement Pump and PCB was necessary but have given me a £100 refund as a goodwill gesture. Everything seems to be working well now.
Replacing the CH valve was quite a big job though as the valves are tucked behind the HW cylinder meaning the cylinder had to be disconnected and moved out of the way to get access to replace the valves. Apparently a really bad design when the house was built.
I had the HW vale replaced at the same time as a precaution. The new valves are apparently serviceable without having to be removed so if they develop another fault later they can be repaired without having to remove the HW cylinder.
Thanks to everyone that contributed to the thread.
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