How to mend ... Cycling Off Off

Resistor R15 value for Potterton Ignition Control Unit Part No.407677?

Does anyone know the resistor R15 value for a Potterton Control Unit Part No.407677 which has partly burnt out... [Read more]

I have a potterton profile 80el short cycling 1 min 'off' 1.5 min'on'?

Replaced pump (sticking)and heat exchanger (leaked). Since these changes the boiler started short cycling - ... [Read more]

boiler cycling?

when my c/heating swithes on the boiler starts after a few minuits the boiler starts to cut in and out obout e... [Read more]

Spectrum Fuel-Miser Mk IV?

My central heating system has a Spectrum Fuel Miser Mk IV which provides: . Electronic temperature control of... [Read more]

Potterton Prima F cycling?

I have noticed over the last few weeks that my Potterton boiler is cycling much more frequently than usual. W... [Read more]

How can I optimize settings on Glow Worm Ultra com 30cxi? ?

Boiler was installed 3 winters ago. First winter very poor, rads took hours to heat and boiler was off when th... [Read more]

Can can I fix an airlock in the central heating system?

I have recently had a new valliant eco plus gas boiler fitted, along with 13 new lockshield valves and TRV's o... [Read more]

Vokera linea ag plus. Domestic hot water cycling hot and cold?

I have the same problem with taps or showers. Checked again and its not just the showers, hot tap turned on an... [Read more]

Up grading Potterton Profile?

Currently we have a Potterton Profile 55e that works well and is very reliable. Due to changes in the layou... [Read more]

CHAFFOTEAUX RSc 2.24 HW inconsistant ?

Domestic HW is tempermental. Nearest HW tap works(most times) but remote HWtap in kitchen fails most times an... [Read more]

Ravenheat CSI 85 A (T) Burner Cycling Constantly?

Hi all... I've got a Ravenheat CSI 85 A (T) combi and shows the following symptoms. It's fine with HW on... [Read more]

Boiler cycling - 10 seconds on 10 seconds off?

Myson apollo 30si, CH only, boiler thermostat on low, no room stat, radiator stat's on 4 radiators - 2 without... [Read more]

Potterton Performa 24 combi boiler on off cycling problem?

Potterton Performa 24 combi boiler on off cycling problem?

Prima F40 - No hot water or heating?

Hi, My Prima F40 boiler is doing nothing when hot water and/or heating is turned on. The heating pump kicks... [Read more]

Intermittant Boiler opeartion?

Good morning, Friends of mine have a Vailant Turbo Max 828E, they say heating apparently works fine however... [Read more]

How can I fix my Ideal Classic HE15 condensing gas boiler?

When the programmer has instructed the boiler to turn off on the time sequence, the boiler still ignites for 1... [Read more]

Potterton Prima 50 F main burner will not remain on?

I've got a twelve or thirteen year old Prima F which has run reliably until the last year or so. I fixed the u... [Read more]

My boiler is continuously cycling on/off for 10s periods; stop this?

I have an Ideal C95FF combi-boiler which was working fine although not all of the radiators heated up to the m... [Read more]

Potterton 50e fan cycled, changed the pcb, now nothing?

My CH fan was running but it was not firing up, kept cycling for over 40 minutes before starting up and heatin... [Read more]

Ravenheat 85 cycling on/off?

My ravenheat 85 a works fine when asking for HW however when the CH is demanded the burner will ignite, burn ... [Read more]