Potterton Performa 28 - pump or water pressure fault

[fix]

Hi I've recently bought a repossessed house which was empty for 6 months and the boiler and water system were completely drained during that time.

I've re filled the boiler and set it to the correct pressure, but it's coming up with a pump/water pressure fault which is a flashing red light by the 60 degree and triangle sign.

When first turning the boiler on and switching to ch/hot water you can hear water going through the system suggesting the pump is doing something, but after 30 seconds or so the light starts flashing,

I was wondering if anyone could suggest what may be wrong? I was hoping it may be air lock at the pump with the system being completely drained until now.

Thanks

 

[McCombi]

The pump proving microswitch probably isn't making therefore stopping the sequence of operation.
Could just be an airlock preventing it, a blockage or the rubber diaphragm is split.

Remember not to remove inner chamber cover.

 

[fix]

Thanks for the reply, is the pump proving microswitch the flow microswitch?

I can bleed the pump if it's possible to do that on this pump to start with

 

[Agile]

Bleeding the pump is a normal thing to do when refilling a system.

I would always recommend a gas engineer is called to check an unknown system which has not been used for months!

Tony

 

[fix]

Thanks for the reply yes I understand with regard to a heating engineer.

To be honest I just wanted to have a go myself with the more straight forward things, and if I can't get it working I will call someone out, the house is top rent out so I would be getting a certificate for all the gas appliances before anyone moved in anyway.

I'm guessing if I undo the bleed screw and water comes out there won't be anything blocking the pump?

Any tips on locating the pump microswitch? I'm assuming it's close by, I can see a couple of switches to the left of the pump.

Thanks

 

[Agile]

The pump may well be seized up! That usually happens when not used for months!

See the FAQ on this site!

Tony

 

[fix]

Thanks I did read the faq last night which I never realised was there so can test for the pump being seized.