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Sunvic Thermostat is where whirring/buzzing coming from as it switches off. At first I thought it was coming from programmer. Should it be making this noise.

Horstmann CentaurPlus C21 Hot water not coming on just heating. Can I take programmer off and test the hot water connection.

Thank you will give it a go

Here are some photos. There is no name on windows

Double glazing fanlights not closing tight. Can they be adjusted. Moved here about 11 yrs ago and windows in then so not sure when installed.

horstmann centaurplus c21 makes whirring noise. Sometimes i hear a whirring noise just before it switches off. Have had 2 actuators and pump fitting lately.

Could this be causing bubbling noise in radiators. This happens when pump indoors comes on.There is no air in them but they are warm at bottom and hot at top.

Warmflow B Series oil fired boiler. What does this do and would it effect radiators. The central heating went wrong and this which I take to be the Auto Air Vent was leaking water at vent so boiler man tightened this and there has been no water leaking. Should this be tight?

Can some one please answer this question for me: can I do without the Sunvic valve and just keep valve for ch open all the time It is on thermostat in room and also timer.

It is more like water bubbling. Have tried turning radiator nearest to it off a bit and will see whats happens.

It is an oil fired boiler Warmflow. Valve 2 port. Sunvic was a replacement. Rads and hot water heated seperately. The hot water also has a Sunvic. Thermostat is room one. thermostat on boiler as well it is set between 60-70

When the ch comes on first thing in morning the bedroom rad starts making noise like as if water was boiling. The bottom of rad is lukewarm and top hot. This all started when boiler broke down. New Sunvic control was put on pipe to open and close when boiler comes on and off. I have noticed...

Just replaced Sunvic Valve for central heating but find it noisy when opening and closing. Can I just set valve to remain open when heating rads. Do you really need one. There is a thermostat in room.[/img]

How does the cover come off Sunvic Simplex Sentinel 200. Can dust effect the performance?

The AW1000 or AW1001 are different Is this the number you mentioned Pr.n 914212109 (01)

Tricity Bendix AW 1002W Unable to get manual have searched web and Tricity site.

Having same problem not filling. Is there a diagram of matrix and how to take panel off.