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  1. R

    Worcester Highflow 3.5 RSF - won't fire up

    Found the fault :) While taking apart some more I noticed arcing on the PCB when it attempted to fire up. I have now repaired and all seems well, fingers crossed. Richard
  2. R

    Worcester Highflow 3.5 RSF - won't fire up

    Hi Tony :) If someone were to tell me that it was a gas part I would almost certainly leave it to an engineer. What I'm looking for is someone that has experienced this problem and and can say it the 'abc sensor or the large PCB etc. or get your multimeter and test terminal 7 etc. I...
  3. R

    Worcester Highflow 3.5 RSF - won't fire up

    Thanks Tony If I can't fix the problem I usually get Worcester Bosch out. It's about £150 from memory. Often these problem are simple probe / circuit board I paying £100 ish for someone to unscrew the boiler front and simple fit something is excessive. I understand the 'It's the knowing where...
  4. R

    Worcester Highflow 3.5 RSF - won't fire up

    Hi Tony :) Not had it serviced yet. Been in the house for just over a year. Previous owner had it done and supplied receipt before sale. (so about 1 1/2 years ago) I have had a similar problem before in my last house. I changed some bits but when I requested an engineer to visit it was...
  5. R

    Worcester Highflow 3.5 RSF - won't fire up

    Hi :) Worcester Highflow 3.5 RSF Gas GC 47 311 40 The boiler problem is this: The boiler won't fire up it just keeps clicking and trying. The fan works the pilot light is on. It makes no difference turning on and off etc. Very rarely it does fire up and runs properly until it reaches...
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