Hi All,
I've been trying to help a friend out with his central heating issue. He has a wall hung Baxi Solo 3 pfl 60 regular boiler with a vented f&e in the loft. The pipe work to the radiators are 8mm micro bore.
The boiler works good for about 30mins then switches off, then it will restart again and run for 5mins, switch off for 5mins etc.
If the temperature on the boiler is set high the boiler will go into over heat, and will need manually resetting.
Just over the weekend the system was power flushed, F & E taken out cleaned. A fair bit of iron oxide and muck was cleaned, now the water in the system is clear. In the passed month the PCB board, fan and air pressure switch have been changed.
The radiators have been painted, and so my feeling is the boiler is good, but the heat isn't radiating away from the radiators efficiently causing hot water to go back to the boiler, causing it to switch off.
I can't seen any by pass valve fitted which i though could have been the cause.
All radiators valves are fully open up stairs and downstairs, if i close the upstairs and quarter turn them back the system overheats faster.
Lastly the pump is working and looks new.
Any help on this would be great, have we missed something obvious? which is causing the boiler to keep swiching off, and flow pipe to become extremely hot?
I've been trying to help a friend out with his central heating issue. He has a wall hung Baxi Solo 3 pfl 60 regular boiler with a vented f&e in the loft. The pipe work to the radiators are 8mm micro bore.
The boiler works good for about 30mins then switches off, then it will restart again and run for 5mins, switch off for 5mins etc.
If the temperature on the boiler is set high the boiler will go into over heat, and will need manually resetting.
Just over the weekend the system was power flushed, F & E taken out cleaned. A fair bit of iron oxide and muck was cleaned, now the water in the system is clear. In the passed month the PCB board, fan and air pressure switch have been changed.
The radiators have been painted, and so my feeling is the boiler is good, but the heat isn't radiating away from the radiators efficiently causing hot water to go back to the boiler, causing it to switch off.
I can't seen any by pass valve fitted which i though could have been the cause.
All radiators valves are fully open up stairs and downstairs, if i close the upstairs and quarter turn them back the system overheats faster.
Lastly the pump is working and looks new.
Any help on this would be great, have we missed something obvious? which is causing the boiler to keep swiching off, and flow pipe to become extremely hot?