Everything indicated the PCB and it was changed but that didn’t work
Plumb center seal the pcb..broken seal =no return..Thread is 4 years old.
I as a heating engineer have NEVER fitted a PCB to return it to the supplier if PCB did not cure the fault (If i use it, it becomes stock item). Reason for that is yonks ago a family member passed away and I was in London for his funeral. Picked up replacement PCB locally to return to Glasgow. Removed the PCB that I had repaired to give customer service. "New" PCB did not work as some scroat had killed the PCB and put it back on the shelf then I gets it. Now if I see an open box that has been tinkered with, I will look at the pCB. If I see the board has been 'used' will reject it or warn the supplier the PCB will be coming back if stuffed.
Can be the microswitch, not always though
Electrical contacts are self cleaning, they do go high resistance but more often the snap action that effects changeover gets screwed.
Even after following flow charts and speaking to Baxi Tech,I have changed pcb and not cured the fault...V v annoying but happens..Pins stick up,stick down,etc etc...sometimes mistakes are made no matter how familiar one is with appliance,or clever,you are.Best you can do is keep learning.No not at all.What makes you think that.Please take the time to read my posts before you reply.It could of been pump,diverter pin,diaphragm,water pressure etc.One thing I can assure you is that I do not change PCBs lightly and view it as the last thing I would want to do.What I am clearly stating is that in this particularly instance (as others have also done) had changed the PCB as directed by manual.
Can you make an alternate suggestion as to what to do when you follow the manufacturers manual and it flowcharts to change PCB.
Even after following flow charts and speaking to Baxi Tech,I have changed pcb and not cured the fault...V v annoying but happens..Pins stick up,stick down,etc etc...sometimes mistakes are made no matter how familiar one is with appliance,or clever,you are.Best you can do is keep learning.
Okay had a similar problem on a job.Customer had a similar problem and kept resetting the boiler until it failed at error 60 and resetting failed to clear error.
Pump working and hot water diverter pin was striking the micro switch and showing continuity
Everything indicated the PCB
What I do know about micro switches is they have internal contacts which degrade and are not visible
Your PCB is very sensitive to slight fluctuations in voltage and resistance and trip very easily to error code
The diverter has two identical micro switches
You want to bet?not normally done for others
My glass would be half full for that clear. Look at reply no 17new micro switch was £17.
On this repair switching the micro switches took 5 minutes on site and confirmed the fault and will assist somebody in future
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