just fitted TRV struggling to get rads on afterwards

[cheesesarnie]

hi.

was very pleased to get a replacement rad fitted & TRV but now after bleeding all rads only the upstairs bedroom rads are on..bathroom is luck warm & no downstairs rads are on.../cant work it out,,,gut feeling is an air lock somewhere

any ideas

normal system with a tank..not combi

many thanks

 

[Newcastle88]

sounds like an air lock. is all the system full and rads bled? what boiler do you have? and what is brand of pump?

 

[kevplumb]

what is the system

 

[cheesesarnie]

hi....eurostar oil boiler..tank in air cupboard..grundfos pump

all rads are bled./.all rads have water in...how do i tell if the system is full>?

i found a bleed valve in airing cupboard....bled that...wonder if theres more somewhere..

when i turn heating on pump sound louder than normal...thanks for help

 

[glasgowgas]

try bleeding the pump?

 

[cheesesarnie]

theres a big disc on the front of the pump (about 1 inch across) is that the bleed valve?

 

[glasgowgas]

have a look at the FAQs at top of page, it will lead you.

there is a big silver slotted disc on the front of the pump.

turn off central heating, remove slotted disc, allow water to dribble from pump, also spin the shaft with a screwdriver, to check the pump rotates freely,replace slotted disc and turn on central heating

 

[ChrisR]

If it has a slot it's a screw - undo until water comes out.

See what speed it's set to . It can make matters better - or worse, to set higher.

Then close any rads which get warm. That'll force air into the other rads.
If any refuse, you have a sludge problem, like many many others.

 

[kevplumb]

View media item 667

 

[cheesesarnie]

cheers guys....all that bleeding & a nights sleep kicked the whole thing into life!