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Monitor 441 Solenoid Damper #6406 AC-120V vs DC-110V
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Thank you for this forum and for the generosity of the readers. Wilmington Delaware, where we come from, isn't monitor country. This type of heater is all new to us. This forum has been a Godsend! Thank you!!!
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Originally posted by hawkins111 View PostI would like to know what the symptoms were that caused you to call a stove shop?
Tom
It became worse over time and we had some issues with soot in the chamber bridging the flame rod and shutting the unit down.
It's running well now, and hopefully it will continue into the spring. When it gets warm, it'll get a better going over.
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Originally posted by adnadeau View PostThe solenoid damper actually runs on DC in the first place. When I had my own combustion blower apart, I tried putting AC across the damper, and it wouldn't work. If you can read a schematic diagram, you will see that the AC voltage coming in from the wall plug is rectified into DC before it gets to the solenoid. The 110/120 voltage difference is not critical. It's sort of like referring to a 2-by-4; it's a nominal reference. It'll work fine.
Originally posted by adnadeau View PostI have to wonder why your existing solenoid "was not reliable". There's not much that can go wrong with one. The plunger might get dirty, but you can just wipe it clean. It's shouldn't be oiled; maybe just a little graphite. If you've been following the Monitor forum, you might have seen mention of an o-ring. If your blower is apart, you might find pieces of it inside the housing. Mine was all crumbled. It acts as a bumper when the solenoid plunger retracts. There's a shallow grove around the plunger that sort of keeps it in place.
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I would like to know what the symptoms were that caused you to call a stove shop?
Tom
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The solenoid damper actually runs on DC in the first place. When I had my own combustion blower apart, I tried putting AC across the damper, and it wouldn't work. If you can read a schematic diagram, you will see that the AC voltage coming in from the wall plug is rectified into DC before it gets to the solenoid. The 110/120 voltage difference is not critical. It's sort of like referring to a 2-by-4; it's a nominal reference. It'll work fine.
I have to wonder why your existing solenoid "was not reliable". There's not much that can go wrong with one. The plunger might get dirty, but you can just wipe it clean. It's shouldn't be oiled; maybe just a little graphite. If you've been following the Monitor forum, you might have seen mention of an o-ring. If your blower is apart, you might find pieces of it inside the housing. Mine was all crumbled. It acts as a bumper when the solenoid plunger retracts. There's a shallow grove around the plunger that sort of keeps it in place.
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Monitor 441 Solenoid Damper #6406 AC-120V vs DC-110V
Hello,
A service tech told us that our damper solenoid assembly was on the blink. I was able to get the service manual, thanks to this forum! With it, my husband and I have learned much about our Monitor 441 heater that came with our house. We bought the part on ebay, advertised as part #6406. Once ours was apart, and we compared parts, it's clear our existing solenoid says AC and the replacement solenoid says DC. We are very reluctant to try this new part for fear of harming our heater. Does anyone have any comments about this? Thanks.
Here's our existing solenoid
And here's the new one we received
Although we didn't receive the box, this is what was pictured in the auction and box states part #6406
Thanks very much for any input.
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