Baxi Bermuda

[FrozenDave]

Hi On my baxi bermuda the pilot light won't stay on,I've followed the
intructions to the letter,turning the grey knob and waiting three minutes
etc but it's having none of it ,the light goes out soon as I release the
knob. Exactly the right time of year for this to happen!! So boiler not
providing heat or hot water. Anything I can do without blowing myself up?
Thanks

 

[Dave Plowman]

Hi On my baxi bermuda the pilot light won't stay on,I've followed the
intructions to the letter,turning the grey knob and waiting three minutes
etc but it's having none of it ,the light goes out soon as I release the
knob. Exactly the right time of year for this to happen!! So boiler not
providing heat or hot water. Anything I can do without blowing myself up?

Sounds like a classic thermocouple fault - assuming the pilot light is of
the correct size.

Many sheds stock thermocouples - or any PM. It's an easy DIY job.

 

[FrozenDave]

Thanks for that. Confirmed my suspicions. Just now got to figure out how to
dismantle the fire and get at the thermocouple.

Cheers

 

[Philip Stokes]

Sounds like a classic thermocouple fault - assuming the pilot light is of
the correct size.

Many sheds stock thermocouples - or any PM. It's an easy DIY job.

Mine does the same with tiresome regularity. You might want to try
cleaning the pilot jets before replacing the thermocouple - just blow or
hoover them out, don't poke anything into them. I find a straw sealed
with masking tape to the nozzle on the vacuum cleaner to be just right
for the job. The small side jet on the pilot seems to block up with dust
every 6 months or so, weakening the flame and triggering the safety
cut-out. The first time it happened I bought a new thermocouple, but
I've never had to use it.

I don't think my house is dustier than anyone elses, but the dog likes
to lay in front of the fire, and I suppose the dust and hair just gets
sucked into the boiler cavity.

 

[Set Square]

In an earlier contribution to this discussion,

Thanks for that. Confirmed my suspicions. Just now got to figure out
how to dismantle the fire and get at the thermocouple.

Models vary - I've had 2, and they were both different. The top of the fire
is likely to be held in place either with a spring loaded bar or with wires
which pass through J-shaped tubes with locknuts on the ends.

You'll have to remove the radiants and the lagging behind them. You'll then
find 2 pins passing through 2 lugs. Remove the pins, and lift the fire off -
having disconnected the electrics, of course.

All the control gubbins slides out from under the heat exchanger, having
undone one screw, turned off the gas, and disconnected the gas pipe at the
crane (conical compression) joint.

You can then get at the pilot and thermocouple etc.

 

[FrozenDave]

Thanks one and all. Problem solved. Not frozen anymore. Was a duff
thermocouple. Total cost of repair £4.50