How to mend ... 3 Motorised Valve

new valve and pump fitted heating fine no hot water?

Just had an engineer to fit a new c/h pump and 3 way honeywell v4073a motorised mid position valve to a combi ... [Read more]

When boiiler is heating hot water, heating comes on too?

Hi, I have an Ariston presurised system and when the temperature in the hot water tank drops the boiler switch... [Read more]

my ideal mini condensing combi boiler wont fire?

when i call for hot water the boiler wont fire,the pump,exhuast fan and motorised valve all operate as normal.... [Read more]

Heating my hot water system?

We have a 210 litre megaflo tank and our boiler is an oil fired Boulter Camray 90/110 but it will not heat the... [Read more]

pump runs but nothing circulating in system?

Boiler fires up fo 30 or so seconds, the pump runs and the system seems to be working then the boiler stops an... [Read more]

Danfoss motorised valve - 2 port?

Hi, My hot water is extremely hot. The cylinder stat works and is wired ok. I have replaced the head only of... [Read more]

Boiler problem further data on earlier question ?

Thank you for your helpful responses. I have made further observations and these are as follows: I have two... [Read more]

what and where is acuator?

fitting a 2 port motorised valve for a potterton profile 50 what and where is a actuator

how do i fix my potterton netaheat 10-16 Mk 11?

I have just spent 400.00 pounds getting a new hot water cylinder fitted and a new motorised valve aand a consi... [Read more]

Why is my heating not working ?

Vaillant 628 thermocompact boiler ( sealed pressurised system) Drayton 5/2 timer for heating and water + Pott... [Read more]

My Glow worm Space Saver 50 boiler appears to have overheated?

The boiler was having trouble firing up on Saturday morning, this appears to have been solved by securing the ... [Read more]

Heating won't switch off?

Okay, it's a long one.... We have a heating only boiler with a separate water tank for the hot water. A wh... [Read more]

No heating - 3 port motorised mid-position valve?

I have a Tower Mid-Position Valve and although I can get hot water my heating will not come on when we switch ... [Read more]

Central Heating Dilemma?

ok I have a Potterton Mini Minder E (MM)to control when I want the water (DHW) and Central Heating (CH) on and... [Read more]

Potterton CH System will not work!?

I have Potterton Suprima Boiler which is heating water only. The CH system is intermittent and only occasional... [Read more]

baxi solo 2pf?

the pump runs and the motorised valve is working. No ignition is working to light the gas. The fankeeps coming... [Read more]

hoe to wire in a Randall hs a3 motorised valve?

can any one supply me with a wiring diagram for the above valve please as i can only have either hot water or ... [Read more]

How can i stop getting air in my heating system?

I have to bleed my radiators about twice a week. My system is a standard y plan. I have recently replaced the ... [Read more]

Can I run my boiler without the CH pump for Hot Water only operation?

My heating system comprises new(ish) boiler (Potterton Suprima 100), hot water cylinder (with cylinder jacket)... [Read more]

How can i fix my combi boiler, Vokera excell, 80 SP?

The boilers pilot light works but the motorised valve allowing the main gas in does not open for heating or ho... [Read more]