How to mend ... Check Air Switch

is my boiler overheating?

I have no experience with boiler, I touched the flue duct on the top of the boiler, it's hurt, very very hot... [Read more]

Potterton Suprima 50 - Pilot won't light?

Lovely flashing red light after three or so attempts by the boiler to re-light the pilot. Reset just restarts ... [Read more]

How can I stop my Ravenheat CSI 85B tripping out?

I had a new Ravenheat CSI 85 B T installed today. It worked for the plumbers who installed it - they left and ... [Read more]

Viessmann Vitodens 100 30kw combi?

Any help appreciated. boiler comes up with F5 fault .In book states burner blocked, check air pressure switch.... [Read more]

WHY'S MY VAILLANT BOILER NOT FIRING UP?

My Vaillant boiler isn't firing up when heating is turned on or when hot water taps are turned on. All the se... [Read more]

28i junior locking out?

Hi all, I am a GSR engineer and had a look at a worcester 28i junior combi today which keeps locking out (4 fl... [Read more]

Ferroli Domina 80 problem Tech help needed?

Hi I have a domina 80 combi that wont fire up for either hot water or ch. If you switch HW on the demand light... [Read more]

Worcester 24CDi Series - Domestic Hot Water demand indictor flashing?

How do I check that the flue terminal has not been obstructed and that the fan and air pressure switch are in ... [Read more]

baxi combi will not light when tap is running ?

fault light showing fan now and again it fires and i get hot water is it the air pressure switch and can i lin... [Read more]

How to sort this boiler problem out (majorca 240/6 back boiler/frontfire)?

How to sort this boiler problem out (majorca 240/6 back boiler/frontfire)? I have a majorca 240/6 back boiler... [Read more]

How can I solve fault code e33/34 on an ariston microgenus? ?

How do I solve the fault codes e33/34 on my ariston microgenus 28kw condensing boiler? I have changed the air ... [Read more]

Potterton Netaheat Profile 80e?

The boiler will not fire up when heat is called for. The pilot lights up and remains on with the fan working a... [Read more]

f30 on/ off?

tubes ok venturi ok fan ok flue ok how do i check air pressure switch ok !!!!

the fan on my johnson & starley j25-32 warm air unit is no longer working?

how can i check that the fan is dead' iam not so sure it is because hteres a fan switch unit and a fan transfo... [Read more]

Vaillant Turbomax No Water/Warmstart/Heating S.33 Error?

Hi, I have moved into a house with this dreadfull boiler. Hot water has been intermittent i.e takes ages to... [Read more]

Potterton Puma 80e - low pressure switch - boiler not firing?

I have just changed a low preesure switch on a Potterton Puma 80e. When I recconnect the two cables the boiler... [Read more]

Ravenheat CSI 85AT boiler tripping problem?

Ravenheat condensing combi boiler CSI 85AT fault? My 1.5 year old boiler has developed a random & intermitt... [Read more]

Ravenheat condensing combi boiler CSI 85AT fault?

My 1.5 year old boiler has developed a random & intermittent tripping fault, in both modes of heating (i.e. CH... [Read more]

Ferroli Optima 901 -occasional Hot water problem?

Hi I have a Ferroli Optima 901 combi boiler and have recently been experiencing occasional problems with no ho... [Read more]

Potterton Profile 80E not lighting?

My potterton profile 80 E is not firing; the fan seems to be humming continuously. How can I check if the fan ... [Read more]