Loss of hot water pressure

[fintan]

Hello,

I'm looking for some advice about loss of hot water pressure throughout our house.

We live in a bungalow and have our hot water tank in the airing cupboard and the cold water tank in the attic.

For the past month or so every time we switch on the hot water tap in either the bathroom or the kitchen, the water comes out at normal pressure for about ten seconds then slows to a trickle.

We do have a booster pump installed in the airing cupboard which connects to both the hot and cold water pipes.

Any ideas as to what could be causing the loss of pressure?

Thanks in advance!

 

[foxhole]

You may have trapped air causing lack of pressure , you don't say what the pumps for , is there a shower which uses the pump, does the pump run?

 

[fintan]

It's a salamander RHP 45 pump a whole house one?

I've actually checked the pump itself and it is not making any noise or whirring when water is running, and the black electrical box that the power goes into on the top of the pump is loose so I'm wondering if it's a problem with the power supply to the pump.

 

[clf-gas]

I've actually checked the pump itself and it is not making any noise or whirring when water is running, and the black electrical box that the power goes into on the top of the pump is loose so I'm wondering if it's a problem with the power supply to the pump.


Then congrats you have found your problem


You may have trapped air causing lack of pressure , how did the air get in

 

[fintan]

No idea, I'll check the pump and then get a plumber in if it's anything more complex than a blown fuse

Thank you!

 

[clf-gas]

Fintan, Sorry this was not a question directed at you,

You may have trapped air causing lack of pressure , how did the air get in

I was just being lazy with the keys

Your problem lies with the pump, do you feel competent to check it electrically

 

[gas4you]

Could also be a blockage in the cold feed to the hw cylinder

 

[fintan]

I've replaced the fuse and it's not that.

As regards feeling competent to checking it electrically yes I think I so.

The most complex electrical thing I've done in the past has been to wire in a cooker, if that answers your question.

What would I need to do?

I've opened up the power box on the pump for want of a better word and it looks like all the wires into it are securely connected.

The cold water is fine for pressure, and we've not had a problem with not getting hot water i.e. the tank not refilling, it's a pure hot water pressure problem