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Author Topic: Blodgett 1000 pilot light out when door is shut  (Read 231 times)

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Offline falsenorth

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Blodgett 1000 pilot light out when door is shut
« on: July 12, 2017, 11:26:57 AM »
I have a stack of Blodgett 1000's. Yesterday one of them started to behave a bit weird. The pilot light keeps going out. It lights back up just fine and the element heats up as it should. But almost as soon as I shut the bottom access door, the pilot light goes out. This seems like it would have something to do with airflow, but I can't find a thing that has changed that would restrict air to that area. I'm flummoxed. It's been working just fine now for about a half hour with that door open. But dollars to donuts, as soon as I shut that door, the pilot will go off within a minute.

Thanks!

Offline vtsteve

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Re: Blodgett 1000 pilot light out when door is shut
« Reply #1 on: July 12, 2017, 11:49:20 AM »
Gas appliance Rule #1: It's almost always the thermocouple.   :)

Seriously, a TC needs to have a hot junction and a cold junction to generate voltage. Leaving the door open may keep the cold end just cool enough that a (failing) TC can keep the gas valve open.
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Offline waltertore

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Re: Blodgett 1000 pilot light out when door is shut
« Reply #2 on: July 14, 2017, 01:42:15 PM »
When the  thermocouplers start to go out the pilot light begins to go out intermit.  I would replace it.  It is an easy fix anyone can do in 10 minutes.  Walter
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Offline falsenorth

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Re: Blodgett 1000 pilot light out when door is shut
« Reply #3 on: July 17, 2017, 02:12:06 PM »
Thanks for the insight. My first thought was the TC, but I don't think it's even been a full year yet since I had a new one installed. I adjusted the TC a little closer to the pilot light and that seems to have held for the past few days. It must have just wiggled its way out of position. I'll keep a close eye on it though, just in case this is a symptom of it starting to go bad.

Offline waltertore

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Re: Blodgett 1000 pilot light out when door is shut
« Reply #4 on: July 17, 2017, 02:52:03 PM »
Thanks for the insight. My first thought was the TC, but I don't think it's even been a full year yet since I had a new one installed. I adjusted the TC a little closer to the pilot light and that seems to have held for the past few days. It must have just wiggled its way out of position. I'll keep a close eye on it though, just in case this is a symptom of it starting to go bad.

Good news.  That could be the fix as I have had the same thing happen.  I keep a couple extra thermocouplers at the shop so when they do go out we do not go out ( of business till we get a new one)  :)
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