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Old ideal tybe b boiler piolet light working but burner not working

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There are a couple of things this may be, so will need checking to rule them out as the cause.

There is a "hot wire" sensor in the pilot flame that allows the main gas valve to come on when it gets hot.

You will need to check the output from this when cold, and when hot. It's a safety feature to prevent gas escaping when not lit.

When cold, check there is continuity in the gas valve coils. A faulty gas valve will not open. This should only be replaced by registered trades people if it is faulty.

Check the blower motor coils in the same way for continuity. If they are defective, they will not allow power to the gas valve either - or it will cause overheating.

If everything checks out ok on the boiler side, try jumping the thermostat contacts, and see if it fires up. If it does - replace the thermostat.

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Posted on Jul 06, 2008

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MY IDEAL LOGIC 30 HAS FAULT CODE L2 ALMOST EVERY DAY SINCE INSTALATION DEC 2010


is boiler still under warranty?
normal warranty lasts at least 2 years
if so get ideal to send one of their engineers out
L2 relates to flame failure
either boiler has failed to ignite
or
boiler has not detected flame once lit

several causes

failure to ignite
ignition electrode/spark generator

failure to detect lit flame
detection electrode/detection lead

blocked condensate pipe
or defective condensate syphonic trap

you really need an engineer to check these components

Mar 16, 2011 | Heating & Cooling

1 Answer

The oil tank ran dry..now the boiler wont light now the oil tank is full


Hi,

Here is a tip I wrote about how you can bleed the air out of the lines to get the oil burner working again...

How to Bleed Oil Burner - Beckett Oil Burner Repair


heatman101

Jan 05, 2011 | Heating & Cooling

1 Answer

Got a baxi back boiler about 20 years old works fine upto the other day when the heating is on the thermosate dos'ent seem to be working the boiler is just running on full all the time and not coming on...


Can you control heat with thermostat by turning it all the way down. I assume from your description that burner is running. If it is and turning t-stat all the way down made no difference I would remove t-stat from wall and remove red or white wires from it.This should cut power to gas valve turning burner off. If this works replace t-stat. Hope this helps. Thanks.

Nov 08, 2010 | Heating & Cooling

1 Answer

Gas boiler won't stay lit!


The burners and pilot need to be cleaned.
Turn off gas and power, remove the burners and pilot. Clean with a brass wire brush. (Steel wire can be used but very carefully) Remove all rust dirt etc. reinstall and it should fire right up.

Dec 28, 2008 | Ruud UBHC Air Conditioner

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My Worcester Bosch 35cdi boiler is flashing temp then backwards t forwards t, whats wrong with it.?


35 cdi worcester combi about 3 years old,heating not working,hot water works fine.It's been serviced not long ago.Room stat turned up and trv's ,but boiler want fire up,there's power to the boiler and the room stat the built in time clock is switched to on, but still nothing. do you think it could be the diverter valve, when i got there it was flashing SE which mean's it needs a service,cleaned the heat exchanger and burner with the proper worceter brush etc then re set boiler with technical, they also said it could be the built in clock and told me to disconect it, and just use the heating stat to control it.It still want fire.

Sep 03, 2008 | Heating & Cooling

1 Answer

I have an old gas heater when i go to light it the piolet light wont stay on when i turn the knob to make it hotter.


Old heaters that have a "standing" pilot light that burns all of the time use a device called a thermocouple. The thermocouple sits in the flame of the pilot and when heated by the pilot, produces a very small amount of electricity (approx 30 mV) which the heater interperets as proof that the pilot is burning and indicating that it is okay to turn the main burner on. The thermocouple is a part that wears out and when it fails causes the exact problem that you are describing.

Jun 26, 2008 | DeLonghi Heating & Cooling

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