thermostats

[tjbrown]

boiler classic ff250-boiler goes on/off every
minute roughly pump keeps running but romstat and cyl/stat dont reach set point
even when run seperate any help appreciated

 

[kevplumb]

three port valve stuck

 

[tjbrown]

thanks for reply fitted new 3 port valve but problem still there

 

[kevplumb]

do you have a bypass fitted
is the boiler noisy

 

[brumylad]

are the rads getting hot at all?

Is the water from the taps hot?

 

[tjbrown]

water does get hot after a while/ one rad in hall way gets fairly warm
others virtually nothing/pipes to rads are warm but seems to end there
have drained and filled afew times.sounds at times as though their is air
in system around the boiler. property is/bungalow with cylinder/pump in
the loft dont know if this is any help. thanks for your help.

 

[tjbrown]

there is a 15mm bypass at the pump, boiler is not really noisy,makes a
slight noise when it comes online,but i think this is from the fan.
thanks.

 

[kevplumb]

have you tryed bleeding the pump