For a while now my boiler has been running hot water and then going cold after a few minutes then hot again.The boiler then just stopped working so we called a local plumber who said it was the pcb.The plumber laft and about half an hour later the boiler fired up and has been on ever since but I don`t want to turn it off incase it doesn`t come on again. Any suggestions
Ravenheat boiler
- Thread starter dandg
- Start date
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You needed a boiler engineer rather than a plumber.
Its a common tactic to say the PCB has failed if they dont know whats wrong and have no diagnostic skills.
The PCB on your model is about the most reliable there is. It uses Finder relays with chunky silver contacts and they virtually never fail but cost several times the price of cheap ones.
We have had a spare PCB in stock for the last five years and never needed to use it.
Its difficult for me to guess the fault on yours but a sticking pump sounds a possibility.
Tony
Its a common tactic to say the PCB has failed if they dont know whats wrong and have no diagnostic skills.
The PCB on your model is about the most reliable there is. It uses Finder relays with chunky silver contacts and they virtually never fail but cost several times the price of cheap ones.
We have had a spare PCB in stock for the last five years and never needed to use it.
Its difficult for me to guess the fault on yours but a sticking pump sounds a possibility.
Tony
I have turned the boiler off now to see if it will fire up again.When the plumber was here he checked the pump and said it was ok
i would not trust a "plumber" who always blames the PCB. They usually follow by saying its not worth repairing and suggest a new boiler!
Just because a pump is working now does not mean its going to be working later.
Dirt in the system can cause pumps to fail to start or to jam when they get hot.
The pump needs to be checked when it has failed to work. There are about 100 other parts in a boiler though.
Tony
Just because a pump is working now does not mean its going to be working later.
Dirt in the system can cause pumps to fail to start or to jam when they get hot.
The pump needs to be checked when it has failed to work. There are about 100 other parts in a boiler though.
Tony
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thanks for the advice.I have been back up to the boiler and its all fired up and I have hot water.Do you suggest that I get this cheched by a boiler engineer.
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