Profile pcb fault?

[gassafe]

Fitted a replacement PCB on a profile to fix an ignition fault last week & all seemed okay with the new board (reconditioned at customer request to save pennies!!! )

the chap txt today to say the rads now heat up normally but allows the radiators to go fully cold almost before clicking back in to heat up ( approx 1 hour)

it sounds like a dodgy thermostat to me, but iv never used a recon board before, could it be that this has an existing fault on it and delaying the boiler from kicking in sooner?

 

[bright spark]

Could be wrong but doesn't the profile hav white wires going from PCB to thermostat. Just go over and get your test leads out. See if the stat is 'open' or closed. If the stat is calling for the boiler to start maybe the PCB is faulty. If not your stats had it. Certainly requires another look.
Yeh hav to look again. No point thinking about it too much before ye have a look

 

[gassafe]

Yes from memory there are 2 white wires from the pcb to the thermostat!

 

[gassafe]

Customer just txt to say the boiler has died with the same fault as originally!!

First & last time I fit a re-con board!!! Grr!!!

 

[lame plumber]

may be cheaper for the customer, not for you!!! Had a similar with a replacement burner before xmas, went back 4 times to get it working due to oil leaks, failed pump etc etc, never again!!!!!!!!! New or nothing, time always makes you forget!!!!!