I drained down system to add a rad and move another downstairs. These rads are still off but central heating system is refilled and on (i.e. valves to these rads are closed). Conventional boiler with pump and feed&expansion tank in loft.
I get heat on downstairs rads but not upstairs. Have checked:
Boiler fires and rads heat up downstairs.
Pump works (as have replaced and can hear movement)
Gate valve is locked open.
Feed & expansion tank in loft is full
All rads upstairs cold (heat reaches the TRV on first rad upstairs but does not penetrate rad even though TRV is open)
Have bled rads throughout house.
Any suggestions as we are having to move baby downstairs for heat at night.
Can this be an airlock upstairs? If so how does one fix?
Thanks
I get heat on downstairs rads but not upstairs. Have checked:
Boiler fires and rads heat up downstairs.
Pump works (as have replaced and can hear movement)
Gate valve is locked open.
Feed & expansion tank in loft is full
All rads upstairs cold (heat reaches the TRV on first rad upstairs but does not penetrate rad even though TRV is open)
Have bled rads throughout house.
Any suggestions as we are having to move baby downstairs for heat at night.
Can this be an airlock upstairs? If so how does one fix?
Thanks