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-   -   Red button on control box keeps tripping (http://www.diychatroom.com/f17/red-button-control-box-keeps-tripping-64770/)

secutanudu 02-18-2010 08:50 AM

Red button on control box keeps tripping
 
I have a ~1994 Weil-McLain oil fired boiler. A few weeks ago the control box went bad and it cost me a Sunday service call to have it replaced. It worked fine for about 2-3 weeks after that. Then, the red button popped up while I was at work. Pressing the button once started it up, and it worked fine for 1-2 more weeks.

Then it tripped again, I hit the button, and 3 days later (yesterday) it stopped working again. So yesterday I hit the button one more time, and it was running this morning.

Some more history:

-I get the boiler cleaned/serviced every year
-I got the transformer replaced about 2 years ago
-Combustion chamber replaced last year

The service tech checked the motor when he was here 3-4 weeks ago and said it was ok. Is this likely a dud Honeywell control box (I hope, since it'd be free under warranty), or is this likely something else?

Is there anything I can check before the tech comes out this afternoon?

Thanks.

beenthere 02-18-2010 03:28 PM

Probably wasn't a bad primary to begin with.

Could be a bad nozzle. They can go out in less then a year.

secutanudu 02-18-2010 05:19 PM

With the old primary it would not reset, ie the red button did nothing to turn it back on.

THe guy just came and replaced the nozzle, he things that was it.

beenthere 02-18-2010 08:52 PM

Quote:

Originally Posted by secutanudu (Post 402243)
With the old primary it would not reset, ie the red button did nothing to turn it back on.

THe guy just came and replaced the nozzle, he things that was it.

He didn't check anything else?

secutanudu 02-18-2010 11:05 PM

He checked a bunch of stuff...said the nozzle looked really dirty so he replaced it. He checked the oil on the boiler-side of the filter, said it was clean, looked at the transformere, and he said the motor sounded fine.

I think he checked a few more things but I'm not sure exactly what. What should he have checked?

beenthere 02-18-2010 11:13 PM

Oil pressure.
Transformer spark(not just see if it jumped 3/8", but how strong it was).
Draft over fire, if too low it will/can damage the nozzle.
If the nozzle looked really dirty. And you get it serviced every year. Should check for a cause. It can be the nozzle itself. Or other problems.

secutanudu 02-19-2010 07:38 AM

Well, I don't think he checked all of that, i just hope it was a bad nozzle. I guess I'll see...


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