No hot water from Shower after changing pump

[Fruitbat04]

Hi all,

We noticed yesterday that there was a damp stain on the bedroom ceiling. I had a look in the loft and there was a slow drip coming from the shower pump. It was coming from the pump itself rather than the water connections so I replaced it with a like for like

Twin Impeller Shower Pump 1.5 Bar

All seemed to go fine and the leak is now gone but although the pump is kicking in, it's only doing so for cold water - Hot water is not being pumped through.

It can't be that I've forgotten to turn the isolator back on because there wasn't one for hot, only cold and I had to drain down the system.

I'm wondering if it could be an airlock? If so, how can I fix?

The system is traditional gravity fed with a cold water tank in the loft and a hot water cylinder in the airing cupboard. The shower pump only feeds a shower in the en suite. The main bathroom only has a bath.

thanks

 

[Steve weightman]

You've got an air lock on the hot feed

 

[Steve weightman]

You've got an air lock on the hot feed

Maybe if you have one put the shower hose at its lowest point in the tray maybe with the pump turned off you may get the air out when the water comes out

 

[Fruitbat04]

Maybe if you have one put the shower hose at its lowest point in the tray maybe with the pump turned off you may get the air out when the water comes out

Legend!!

Yeah I tried that with the shower head disconnected - it spluttered for a bit and started working again so clearly was an airlock.

Thanks for saving me having to spend more time messing round in the loft with such and easy fix.

 

[Fruitbat04]

By the way, I don't recommend that shower pump. I was hoping the replacement would be quieter but it's just as loud. I would have gone for a different brand had it not meant having to mess around with the pipe work.

 

[Steve weightman]

No problem