How to mend ... Pump Hot Water

Do the Rayburn central heating pipes need to be 22mm or is 15mm ok ?

On the diagram it shows the hot take off for the central heating as 22mm, my circuit is 15mm could this be the... [Read more]

Where should the pump go on my rayburn 355 for the cental heating ?

I am in the process of plumbing in my rayburn 355 SFW. Have followed the diagrams to the letter, but when I ha... [Read more]

Rover 25 Thermostat?

The in car heater has stopped working. The pipes in the engine bay that feed the heater remain cold as does th... [Read more]

pump overrun vaillent?

not even running put on the heating just shuts down but have hot water

my tenants potterton prima needs rebooting every morning?

Please please can anyone help. We've got a tenanted property (only 13 years old) with a potterton prima system... [Read more]

no hot water?

i have got a optimax 25c boiler central heating is working but no hot water,i have change the pump diverter, f... [Read more]

Grundfos UPS 15 Circulation Pump Fault?

Our Circulation pump has become very noisy over the past few days. The radiators seem to be working ok and the... [Read more]

No heating but plenty of hot water ?

Here's a strange one. Vaillant VCW 242 EH. Heating cuts out after a couple of seconds but keeps trying to hold... [Read more]

how can i fix pulsacoil a class?

i have a pulsacoil a class the pump seems to be very hot,heat exchanger is cold and i dont get any hot water a... [Read more]

halstead ace high problem?

Hi, I have a problem with my hot water and heating. The Halstead Ace High boiler does not come on when a deman... [Read more]

vaillant 18 t3w combi?

t3w 18 combi pilot light okay and lit ,pump running but no heat or hot water,differential valve okay.solen... [Read more]

how can i fix my Glow-worm fuelsaver ufb 40f?

Hi, Pilot light has gone out on my boiller, followed instruction re relight the pilot, not working, no heati... [Read more]

worcester greenstar 24i junior boiler stopped working?

Help I have a worcester 24i junior boiler 4 years old which the pressure keeps dropping had a leak a few weeks... [Read more]

Pressure fault on Worcester 28Si II?

Hi. I'm repairing my boiler after it froze. I have the central heating working now (pump and flow sensor damag... [Read more]

hot water but no heating 24i worcester?

heat but no hot water have pump run but wont fire it trys

ravenheat white star clicking,intermitent stop start on hw and heating?

usualy fires up fine then cuts out on both systems.pump still runs then fires again lots of clicking noises th... [Read more]

how do you tell if the pump isnt working worcester heatslave?

two rads not receiving hot water could it be the pump?

Cold rads down stairs Volkera compact 28?

My boiler produces hot water but will not heat up the rads down stairs. The ones up stairs are only partially ... [Read more]

why wont boiler turn off?

my 831 is 5 years old its had a new pump after just over 2 years old now its had a new pressure sensor (f75) a... [Read more]

ravenheat white star 100?

the boiler will fire up on hot water and heating after a few seconds it shuts down, it will keep coming on the... [Read more]