Hello, I have a glow wrom ultimate 35c combi boiler which has terrible flow rate.
Flow rate used to be strong but one day around 2 weeks ago it just slowed to almost a dribble.
To date i have replaced the flow rate sensor, the pressure sensor, I have replaced the springs inside the diverter valve and i have replaced the actuator that drives said valves components and still, no improvements.
Pressure is building and holding fine, the radiators on all 4 levels of the property are working fine (so assuming pump isnt the issue) as are all of the controlled aspects of the heating system such as the timer.
Water flow to the boiler appears to be fine and cold water tap pressure is still strong so not thinking theres an issue with enough water getting to the unit.
All filters have also been stripped and cleaned as well as the heat exchange plate.
Kind of running out of ideas.
Could a faulty PCB be the possible culprit?
Flow rate used to be strong but one day around 2 weeks ago it just slowed to almost a dribble.
To date i have replaced the flow rate sensor, the pressure sensor, I have replaced the springs inside the diverter valve and i have replaced the actuator that drives said valves components and still, no improvements.
Pressure is building and holding fine, the radiators on all 4 levels of the property are working fine (so assuming pump isnt the issue) as are all of the controlled aspects of the heating system such as the timer.
Water flow to the boiler appears to be fine and cold water tap pressure is still strong so not thinking theres an issue with enough water getting to the unit.
All filters have also been stripped and cleaned as well as the heat exchange plate.
Kind of running out of ideas.
Could a faulty PCB be the possible culprit?
I’m guessing your a homeowner?