How to mend ... Test Boiler Fault

Ferrloi 25c no Heating after new PCB fitted?

Initial fault of F26 caused by frozen condensate pipe. F 26 couldn't be cleared so the PCB had to be changed. ... [Read more]

Alpha HE CB33 Boiler keeps tripping the RCD?

I have an alpha boiler with an intermittant fault. Now and again just before it fires up the RCD will trip. I ... [Read more]

Ravenheat LS100T combi boiler?

The boiler is not working on either the hot water or the central heating. When I go to switch it on the green ... [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]

baxi 105e gas valve fault?????????????????????

hi there,having problems with baxi combi boiler.belive the problem is gas vavle.need to know if there is no ga... [Read more]

Has the Fan Assembly truly failed?

Hello all I have a Glow Worm Ultimate 120FF boiler that serves the central heating in my home. The system ... [Read more]

Fault code 'A02' with my Ferroli Optimax HE Boiler?

I have a continued problem with my boiler that just won't go away! About once a week the heating & hot water g... [Read more]

POTTERTON NETA HEAT 16-22 ELECTRONIC?

BOILER WILL NOT FIRE UP FAN RUNS SOLENOID VALVE CLICKS ONCE BUT HAVE NO SPARK, HOW CAN I CHECK OUTPUT FROM PCB... [Read more]

How can I fix my Baxi Combi 105HE boiler?

The heating has suddenly stopped working today. We have a combi boiler and the hot water still comes on insta... [Read more]

My central heating does not work, it firesup then cuts out after 20 seconds?

I have a condensing fanned boiler the CSI 85T. The problem I have is with the central heating side in that whe... [Read more]

FERROLI OPTIMAX 25C OVERHEATING?

When I turn on the hot tap the boiler fires up then a few seconds later it overheats and I get F3 fault code, ... [Read more]

HOW CAN I FIX MY IDEAL ISAR HE30?

IT WOULD APPEAR THAT THERE IS NO POWER TO BOILER BUT WHEN I TEST IT WITH A MULTI METER ITS GETTING POWER UP TO... [Read more]

Drains test?

I have to do an air pressure drains test for a new build that is nearing completion. There are 3 pipes to test... [Read more]

Vaillant turbomax VUW/GB282/1E heating fault?

I was called to take a look at this particular model earlier today and whilst waiting for a response from Vail... [Read more]

How do I remove PCB board?

The 407677 pcb in my potterton profile 40 is faulty ( thanks to this site for finding answers to symptoms). I ... [Read more]

glow-worm flow switch problem and leak?

i have a glow-worm swift flow 100 and two separate problems. the first is the pressure loss, it after the heat... [Read more]

Heating Fault - Pump continually runs (Maxol microturbo 402)?

I have a Maxol microturbo 402 domestic boiler that is used for the central heating and hot water in my home. T... [Read more]

vokera compact 28 boiler?

my boiler will not ignite,I have followed the fault finding test A to the point where it (is there 230vacbetwe... [Read more]

PCB for worcester 35cdi mk2 rsf boiler?

Following the fault dianostics, given a fast flashing red lamp, on J flowchart in the owners manua (The fan no... [Read more]

Potterton Boiler?

Jack, Calling a qualified Corgi engineer to service the boiler and give me a certificate was the first thin... [Read more]