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We have 155 questions about mending 'intermittent hot water'

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Mend Heating, Home Heating Systems

how can i fix my baxi combi 80 eco?

My Boiler keeps firing on hot water when no hot water is been drawen. The hot water DHW Pressure Differential... [Read more]
Mend Heating, Home Heating Systems

Bosch 532i Hot Water overheating?

Fault seems to be intermittent. Had local engineer in who fitted a new high temperature sensor last week. Ev... [Read more]
Mend Heating, Home Heating Systems

intermittent problem with central heating valve not opening?

We have a Drayton wireless for our central heating, and a Drayton ZA5679-2 2 Port motorised valve also for hea... [Read more]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

would the low pressure affect heating of hot water for taps?

low pressure showing on boiler and intermittent hot water supply
Mend Heating, Home Heating Systems

Vokera Linea 24?

Boiler fires up then cuts out. heating is on but hot water is intermittent, usually when I run a tap the boile... [Read more]
Mend Heating, Home Heating Systems

Baxi Bahama 100,efd ignition board?

I have a Baxi Bahama 100 with intermittent hot water,found a burnt out resistor on the EFD Ignition board(2406... [Read more]
Mend Heating, Home Heating Systems

Synchronous Motors - Hot Water No CH Poterton Neataheat Profile 30e - 80e?

Hi, Further to my recent (and ongoing since Oct/Nov 2009!!) Answer/Post/update - under title; 'Hot Water Bu... [Read more]
Mend Heating, Home Heating Systems

Halstead Ace Circa 2001 - Not Heating?

Problem – Intermittent fault or faults causing the boiler to cease heating water and or Central Heating. Oc... [Read more]
Mend Heating, Home Heating Systems

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]
Mend Heating, Home Heating Systems

Grundfos Selectric 15-50 - noisy when on, intermittent banging?

For the last few weeks our pump has been getting noisy, now we get loud vibration/banging noises that are some... [Read more]
Mend Bathroom Appliances, Baths and Showers

intermittent hot water - Valliant Combi?

Hi, I have a Valliant Combi (about 10yrs old, no model number that I can find) that sometimes just doesn't giv... [Read more]
Mend Heating, Home Heating Systems

Low water pressure and no hot water on a Worcester 28i Junior?

Intermittent problem whereby the water pressure is weak and trickles out of both hot and cold taps, however th... [Read more]
Mend Heating, Home Heating Systems

intermittent lighting?

my sime formay c boiler is not working properly the boiler will only light for 2-3 seconds and this is very in... [Read more]
Mend Heating, Home Heating Systems

worcester 350 combi 10 years old two pumps?

the pilot lights but the flame doesn't spread across the burner to the flame sense electrode this happens on b... [Read more]
Mend Heating, Home Heating Systems

intermittent hot water?

i have a ferroli optimax 901 boiler.c/h is fine but hot water usually not working-occasionally does.replaced b... [Read more]
Mend Heating, Home Heating Systems

Ravenheat boiler with no hot water?

Have a CSI 85..CH is working fine but hot water is non existent. Started out intermittent.. Boiler fires up ... [Read more]
Mend Heating, Home Heating Systems

brittany combi se 80 hot water fault?

guys, i have the above boiler, and before xmas had a problem where i had no hot water, i called an engineer w... [Read more]
Mend Heating, Home Heating Systems

Potterton Performa 28 intermittent hot water ?

Hot water cuts out but CH works fine. Sower makes funny noise just before water going cold then again when th... [Read more]
Mend Heating, Home Heating Systems

My radiators on the first floor do not work until I run some hot water?

We have a problem with our Worcester Bosch “Heatslave 26/32 RS0 GB oil Combi” boiler, which provides hot w... [Read more]
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