Please help bit of an emergency no hot water.

[armyash]

Hi guys

Changed 5 radiators yesterday. now customer saying no hot water. 2 2 port valves. hw cylinder in the loft.

Turned hw on at programmer and hear the motorised valve and boiler fires up and is running but for some reason not getting hot water.

What should i be checking? I have to go back tonight

thanks

 

[Rickster123]

Hi guys

Changed 5 radiators yesterday. now customer saying no hot water. 2 2 port valves. hw cylinder in the loft.

Turned hw on at programmer and hear the motorised valve and boiler fires up and is running but for some reason not getting hot water.

What should i be checking? I have to go back tonight

thanks

Air mate

 

[Paulplumb]

Check for air at cylinder. Look for an bleed vent or crack the flow cylinder Union to let the air escape. Make sure pump is free of air too.

 

[armyash]

No air vents in the loft at cylinder. CH been working fine, no air in rads.

Will bleed the pump again.

Anything else i can check?

 

[stevetheplumber]

stick a bucket under the top union on the primaries at the cylinder and crack it open

 

[armyash]

combination cylinder in loft

 

[Rickster123]

combination cylinder in loft

Still has primary's going to it though doesn't it?

 

[gasmanrob]

Turn the pump upside down and vent the system everywhere possible with it running and boiler stat on low (providing it hasn't got a flow sensor like a solo he) then put the pump back usually does the trick

 

[smtplumbing]

crack a fitting on the hot water tank bud its air man thats all

 

[armyash]

Thanks guys.

It was air as you all said, missed a vent yesterday on a fitting covered by insulation and taped up. Doh! bled the air and felt the pipes get red hot instantly. Sorted.

 

[armyash]

Still has primary's going to it though doesn't it?

Just thought I add extra info in case it made a difference. 🙂

 

[rocketmanbkk]

Air - I'm having a hot flush and I've done nowt!

Glad it's fixed.

 

[stevetheplumber]

if there no vent ash you can crack the union or compression fitting on the top primary just for future ref