Water pump turns off as shower temperature is increased

[choffer74]

Hi all,

We recently moved into our house and have had a few issues with the cold water and showers.

The cold water goes from the tank through a water pump to the shower. hot water is fed from a combi-boiler.

If you turn the shower on with the temp set to cold, you can hear the water pump kick in and the pressure if obviously fine. As you turn the temperature up pressure out of the shower head reduces, and then the cold water pump de-activates.

We can get round it by having the sink tap running with cold water - this activates the pump. But its not ideal!

Any suggestions?

thanks in advance for any advice
Graham

 

[Rob Foster]

Hi all,

We recently moved into our house and have had a few issues with the cold water and showers.

The cold water goes from the tank through a water pump to the shower. hot water is fed from a combi-boiler.

If you turn the shower on with the temp set to cold, you can hear the water pump kick in and the pressure if obviously fine. As you turn the temperature up pressure out of the shower head reduces, and then the cold water pump de-activates.

We can get round it by having the sink tap running with cold water - this activates the pump. But its not ideal!

Any suggestions?

thanks in advance for any advice
Graham

It might be that the mains and tank fed sides are unbalenced , this issue used to be a problem years ago, how old is your gaff ?
centralheatking....what I am suggesting is that its not a component failure but a pre existing installation fault nit picked up when you bought the place. centralheatking

 

[Riley]

Just get your cold pipes to mains and do away with tank

 

[Ben-gee]

As Riley says, but don’t forget to remove the pump when this is done!

 

[Rob Foster]

As Riley says, but don’t forget to remove the pump when this is done!

dont forget to sell the pump on ebay. chking

 

[choffer74]

house is 20 - 25 years old.

we live in a (very) low pressure area - so getting rid of the pump will cause other problems right?

 

[Rob Foster]

house is 20 - 25 years old.

we live in a (very) low pressure area - so getting rid of the pump will cause other problems right?

look the pump is in the wrong place , treat the disease not the symptom, get a big mains booster for the whole place, if you want I can specify
Rob Foster aka centralheatking

 

[Riley]

Does the hot on your combi work?

 

[Rob Foster]

Does the hot on your combi work?

he said yes it just gets busted by the inequal pressure IMHO
chking

 

[Riley]

So get it tested rather than GUessand mains the cold surely??? If they need a booster a pro will tell them I’d be amazed if they had enough pressure for hot but not cold