How to mend Boiler Heating Cycling

Worcester Boiler cycling and not heating properly?

After a few hours goes to ignition lockout. Cycles every 20s or so, even though can hold hand against exit pi... [Read more]

Sime Super 90 MkII fails to ignite 'sometimes'?

My boiler 'sometimes' fails to ignite. I have my boiler on timer early morning / late evening and notice somet... [Read more]

Ravenheat combi boiler continually firing then shutting down?

My 3 year old Ravenheat CSI 85A combi boiler developed the following fault: Firstly, the domestic hot water w... [Read more]

vaillant vc gb 221 h boiler cycling?

My boiler fires up as normal for about 15 seconds then switches off (pilot still on)cuts back in 10-15 mins la... [Read more]

3

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]

1

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]

potterton 24 performa cycling?

i have followed the answers having a similar problem, the hot water works fine having replaced (some time ago)... [Read more]

2

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]

POTTERTON PRIMA F ERRATIC FAILURE TO IGNITE?

When the hot water or heating is switched on the boiler attempts to start up, i.e. the fan starts and stays on... [Read more]

cYCLING PROBLEM?

The boiler is an Ariston A27/MFFI Eurocombi. The boiler is fine on the hot water side but when the heating is ... [Read more]

3

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]

4

Intermittant Boiler opeartion?

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

3

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]

1

baxi 105HE combi is short cycling?

my Baxi 105HE combi boiler works ok for hot water but in heating it runs for 5 seconds and off for 15 seconds ... [Read more]

1

potterton netaheat 16-22 not lighting probs?

I have just replaced all the rad valves in a mates house, drained the system, replaced all the velves and retr... [Read more]

1

Vokera 12_24 RSE Mynute Central Heating Boiler Burner keeps going out?

I have a Vokera 12-24 RSE Mynute Heating Boiler(Direct System)When the room thermostat calls for heat the pump... [Read more]

4

Potterton Kingfisher Mf. on-off cycling?

Boiler 3 yrs old. At the end the heating cycle there is about 8-10 clicking sounds in say 10 secs with the fan... [Read more]

1

Baxi 105e c/heating cycling?

The boiler seems to be heating in bursts. The main burner is only lighting for a few seconds and then shuts o... [Read more]

4

Potterton Performa 24 combi boiler on off cycling problem?

My Potterton Performa 24 combi boiler ignites correctly but only stays on for a minute initially then switches... [Read more]

2

Ferroli Falcon cycling on and off with heating and hot water?

Hi, My boiler has been cycling on and off for a while now on both the heating and hot water. I have changed th... [Read more]