My problem.
Boiler stopped working one morning.
Our local gas engineer attended and found the condensent drain had blocked causing a water leak inside the boiler and consequently the fuse had blown on the main PCB.
So drain cleared, water cleared, fuse replaced. Boiler fully serviced at same time.
Problem is now although the central heating works wonderfully if we turn on the hot tap within seconds the boiler shuts down, red light flashs and F17 shows as error on display. The boiler then restes and does the same until the tap is turned off. We are aware the F17 is voltage less than 170 but this seems very odd as the voltage at the input is always 240 (via multimeter) .
Engineer has changed the Overheat Thermostat and both Heating thermistors without any luck.
Please could you advise ? we are currently thinking possibly the flow sensor ?
Boiler stopped working one morning.
Our local gas engineer attended and found the condensent drain had blocked causing a water leak inside the boiler and consequently the fuse had blown on the main PCB.
So drain cleared, water cleared, fuse replaced. Boiler fully serviced at same time.
Problem is now although the central heating works wonderfully if we turn on the hot tap within seconds the boiler shuts down, red light flashs and F17 shows as error on display. The boiler then restes and does the same until the tap is turned off. We are aware the F17 is voltage less than 170 but this seems very odd as the voltage at the input is always 240 (via multimeter) .
Engineer has changed the Overheat Thermostat and both Heating thermistors without any luck.
Please could you advise ? we are currently thinking possibly the flow sensor ?