Baxi DuoTec Combi HE 28 - explosive ignition

[jimmyhur]

I have the above named gas condensing boiler - been in about 3 and a half years. It's been OK in that time, although it did require a new fan last winter.

Although it's been regularly serviced by the guy who installed it, the one thing that is becoming frustrating is the explosive ignition. Last winter we experienced this for a while before the boiler eventually errored with E133 (gas problem or flame failure). Resetting the boiler worked a few times, but we had to call the installer eventually and he fixed the problem by moving apart the spark electrodes (I think). From my googling, the spark electrode issue (the fact that they move closer together over time stopping the spark being generated) appears to be common to this model of Baxi boliers.

We are now experiencing yet again some explosive ignitions when the heating is on or when the hot water tap is opened. I'm going to call my installer, but before I do, can anyone tell me if there is a replacement part that can be fitted - i.e. new spark electrodes - that have a different design and are not susceptible to this problem? I don't really want the installer to just move the electrodes apart again only for the problem to reoccur in the future.
Thanks

 

[powell30]

Part no 72003100. New style electrodes

 

[jimmyhur]

Thank you. I will pass on to plumber.

 

[perchpatrol]

Hi. Had the same problem. My gas fitter thought it could be the main board after talking to Baxi.Tried board but still same.Googled it and found answer on this site. He tied it and we now have hot water after 4 days without. Shower here I come.

 

[jamesboyd]

i think the spark gap must have been too big not too small!

 

[adlplumbing]

their is away messuring the spark gap but its not a diy job

 

[jamesboyd]

adl is the way you mean to do with a coin! I was gonna mention that

 

[adlplumbing]

yep but it happens to be in the cc so where not ment to mention that

 

[jamesboyd]

of course, sorry to bring it up

 

[adlplumbing]

no worries erm are joining the cc

 

[jamesboyd]

i would like to, i will apply in a minute actually. i am trying to learn more about boiler breakdown's myself, so it could help possibly?

 

[adlplumbing]

it will

 

[jamesboyd]

adlplumbing - did you go on any boiler breakdown courses? I would like to go on 1 or 2 but not sure which is a good one or not! ....?

 

[adlplumbing]

baxi run some good ones

 

[jackecole]

heard the baxi is rubbish (now any way) - abosulte junk I was told