Hi all, I have 2 problems that may or may not be linked??
My sisters heating has just decided to only heat u/stairs rads and HW has never worked from controller and stops CH igniting.
Rads have heat u/stairs but cold d/stairs.
The rads are on are not very hot
The boiler/main pipes clang after about 10 mins of running
Hot water has never worked from controller since day one
When HW selected from controller the CH will not call for heat from controller or stat
Going by the posts I have read it could be one of 3 things:
1.Air in system
2.Pump had its day
3. Boiler faulty, pressure problem
Ideal ICOS boiler (combi or condense??)
HW/CH header tank in loft - (sealed sytem or vented??)
Hercal 110 Cylinder
Motorised valve - Danfoss HSA3
Controller - Danfoss
Stat - Danfoss
This a 5 year old house, in plastic microbore, it has TRV's on 8 rads and normal on hall downstairs. A TRV is missing its top in the d/stairs toilet but she says it has always worked fine without it??
I have already done the following:
Pump is running in all 3 settings
Bled all rads - no air
Tested for voltage (I am a spark) when calls for heat on m/valve, tank stat etc and in control box. All present
Any advice is greatly welcomed.