Upstairs Rads Hot, downstairs Cold

[Harvey Parsons]

Hello,

Have Worcester 40CDI that is running hot upstairs and cold downstairs, no hot water. Boiler display is flashing top left and bottom right corners at the same time in between showing water temp which goes up to 104.

Have reset and, after a few seconds the boiler kicks in and lights, after a couple of minutes goes out, At the boiler, Flow pipe is hot return cold.

I am assuming airlock but have bled all rads so any ideas as to where the issue maybe would be appreciated.

 

[Riley]

Have you done anything to allow air into the system?

 

[Harvey Parsons]

Have you done anything to allow air into the system?

Leak under floor boards, so system turned off very quickly as old sweated joint failed.

 

[Riley]

If you have a combi airlock are less likely as you can force the air out. Are all radiators full and bled? I’d be looking at a circulation problem

 

[ShaunCorbs]

Gas safe engy required key is you've not got hot water but heating upstairs (gravity)

 

[Harvey Parsons]

If you have a combi airlock are less likely as you can force the air out. Are all radiators full and bled? I’d be looking at a circulation problem

Yes, all full and bled

 

[Harvey Parsons]

Yes, all full and bled

Pump is turning over as normal, sounds as it did before the issue although lower 22mm pipe, output i believe is hot, but upper, flow in I believe, is cold

 

[Riley]

Note to self must read full opening post. Sorry I thought you had heating upstairs but not down I missed the bit about hot water.

 

[Harvey Parsons]

Thanks for the responses, sorted now, dodgy valve at the pump, bit red faced as I should have spotted that in the beginning, but, learnt not to rush and take the time to ensure things are doing what they should be doing.

 

[Riley]

Thanks for letting us know