How to mend ... Water Going Cold Burner

Vokera Maxin 28e combi boiler, DHW runs hot and cold?

A few months ago DHW temperature started to fluctuate mildly between hot and warm. This problem got worse so a... [Read more]

how can i fix my Worcester 24i combi boiler?

when I turn on the hot water tap my boiler ignites and heats the water like it should, but after about 5 mins ... [Read more]

Glow worm 100E small burner flame, now hot water?

Hi, i hope you can help me with a problem that is just baffling me. I have a Glow worm 100E that has heating ... [Read more]

How can I fix my Saunier Duval Semia Condens boiler?

The Central Heating (CH) side works perfectly but the Domestic Hot Water (DHW) has developed a problem, thus..... [Read more]

Worchester junior 28i hot water no heating 5 flashes in service mode?

I have a Worchester junior 28i boiler, the hot water is working but not the heating and the green burner indic... [Read more]

Why the hot water keeps flowing hot and then cold and again hot and cold?

Why the flame remains always at the same size? That is why the hot water cannot be kept at a constant temperat... [Read more]

Ravenheat LS100?

Installed LS100 in the loft way back in 2003 and it's never missed a beat. 3 weeks ago I installed a mixer sh... [Read more]

My Glow Worm Micron 30FF wont light. How can I check whats wrong&fix it?

I have a Glow worm Micron 30FF which was installed new 4 years ago. Since then it has been serviced and a new... [Read more]

How can i fix my Ariston A23 Mffi E Combi boiler NO DHW URGENT?

No Dhw, runs cold after a few minutes when demanded either alone or with CH demand, the burner continues to ru... [Read more]

faulty combi boiler?

I have a ferroli f30 combi boiler with a fault on the hot water. Boiler fires water runs hot then burner cuts ... [Read more]

Vaillant ecoTEC 828 pump starts with cold water tap?

When I turn on the cold water taps everything is fine until I turn the tap OFF. Then the pump (not the burner)... [Read more]

biasi spa 24s jr combi runs hot & cold?

hi,i have a biasi spa 24s jr combi boiler which is 10 yrs old & has a problem with hot water,heating works fi... [Read more]

ravenheat csi 85 a [t] boiler?

main burner fires up on off repeatedly, heating water gets hot, domestic gets hot for few minuits then runs co... [Read more]

hot water going hot and cold, burner coming on and going off?

Heatline S30 compact What is the cause of hot water going hot and cold, burner coming on and going off?

worcester 24i rsf. intermittent pump and unreliable burner firing?

problem with boiler - when i demand hot water, the pump will work but sometimes burner will not fire up, somet... [Read more]

Heatslave 15 19 burner not igniting on hot water demand?

According to the manual, the burner should come on under hot water demand. Mine doesn't unless the shower temp... [Read more]

Potterton Performa 30 HE Central Heating Sensor?

Hi all, I'm experiencing some intermittent problems with my Potterton Perform 30 HE. If anyone could advise... [Read more]

How can I fix my Greenstar CDi condensing combi boiler?

...after nearly 4 years of fault free operation from new, this morning I had no hot water & a "EA" message dis... [Read more]

VUW GB242E no ignition?

The boiler goes through the lighting sequence on heating and water ,all lights on except burner then lock out ... [Read more]

how to change thermistor on biasi m1132sm/e?

as above, on demand the burner goes on and off thus water goes hot and cold even with tap on half demand, boil... [Read more]