Quad Classic Bay chewing up snap disks like that's its job

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goathead

Member
Hearth Supporter
Jan 17, 2009
71
Northern CT
Ok, just fired up the stove for the first time this year and the convection blower isn't coming on. I jump the snap disk and it runs fine. This was a stove I got new this year and I've run maybe 1/2 ton of pellets through it. Now in that 1/2 ton, this is the 4th time this snap disk has gone bad. This is snap disk 1 for the convection blower. I'm calling the dealer again on Monday, but come on, 4?!?! Any idea what causes this?
 
goathead said:
Ok, just fired up the stove for the first time this year and the convection blower isn't coming on. I jump the snap disk and it runs fine. This was a stove I got new this year and I've run maybe 1/2 ton of pellets through it. Now in that 1/2 ton, this is the 4th time this snap disk has gone bad. This is snap disk 1 for the convection blower. I'm calling the dealer again on Monday, but come on, 4?!?! Any idea what causes this?

Make sure you get a ceramic one if the one you have isn't.

Also if they aren't tight in their mount they may not get the contact they need.
 
Sounds like a bad batch of snap discs!! You can get adjustable ones from Grainger. Then you can, like several here have done, adjust the turn on point so the fan comes on sooner.
 
tjnamtiw said:
Sounds like a bad batch of snap discs!! You can get adjustable ones from Grainger. Then you can, like several here have done, adjust the turn on point so the fan comes on sooner.

Whoa...please tell me more. This sounds like a plan!
 
Going on 4th season and no snap disc's here.. Although the insert model is a little different.

Having it go through that many, in that short of time. Would have me looking elsewhere. These questions may have little/to nothing to do with your problem. but worth checking.

1.) Do you have a surge protector hooked up to your unit? Being you have another stove and a member for awhile. It would be a safe bet you do.

2.) Have you checked the incoming voltage in the house/and or outlet the insert is hooked to? Power supply can do funny things.

I am very interested in these adjustable snap discs also??? tjnamtiw... Please, do say more.
 
tj must be off nappin!

I'll post what I can. But I might not have the correct model. also what is the close temp on the current switch? Your looking for fan control. Which is N/O or close on rise. Link below is what I assume is the stock replacement.

(broken link removed)

Here is a couple of grainger links to the adjustable snaps!

(broken link removed)
Fan On Temp. (F) 90 to 130
Fan Off Temp. (F) 70 to 110

(broken link removed)
Fan On Temp. (F) 140 to 180
Fan Off Temp. (F) 120 to 160
 
DexterDay said:
Going on 4th season and no snap disc's here.. Although the insert model is a little different.

Having it go through that many, in that short of time. Would have me looking elsewhere. These questions may have little/to nothing to do with your problem. but worth checking.

1.) Do you have a surge protector hooked up to your unit? Being you have another stove and a member for awhile. It would be a safe bet you do.

2.) Have you checked the incoming voltage in the house/and or outlet the insert is hooked to? Power supply can do funny things.

I am very interested in these adjustable snap discs also??? tjnamtiw... Please, do say more.

Yeah, both go through a surge protector and I checked the voltage and it's fine. My other Quad was in the same place for years and never had an issue so I know the circuit is stable.
 
j-takeman said:
tj must be off nappin!

(broken link removed)
Fan On Temp. (F) 90 to 130
Fan Off Temp. (F) 70 to 110


;-) :cheese: No, Saturday night football!!!!!
My original snap disk #1 was a 120 but some are lower at 110.. That first one is the one I have now that turns the fan on at about 100 degrees now and it won't shut off until every bit of heat is out of the stove. It wasn't my idea last year to get it. I am ashamed to say I forget who it was that suggested it. I hope he forgives me because we worked together along with a few others to suck every bit of heat out of the tubes by putting springs and turbulators in them. I'm sure you followed my experiments.

Oh, one other thing. The new snap disk is bigger than the stock one and you'll have to drill new holes for the sheet metal screws. Also, I used a surface pyrometer and located the first spot to get hot enough to trigger the switch and relocated it there. On the Castile it's on the right side up in the top of the 'triangle' of sheet metal. On the Sante Fe, there's not much room to relocate.
 
tjnamtiw said:
j-takeman said:
tj must be off nappin!

(broken link removed)
Fan On Temp. (F) 90 to 130
Fan Off Temp. (F) 70 to 110


;-) :cheese: No, Saturday night football!!!!!
My original snap disk #1 was a 120 but some are lower at 110.. That first one is the one I have now that turns the fan on at about 100 degrees now and it won't shut off until every bit of heat is out of the stove. It wasn't my idea last year to get it. I am ashamed to say I forget who it was that suggested it. I hope he forgives me because we worked together along with a few others to suck every bit of heat out of the tubes by putting springs and turbulators in them. I'm sure you followed my experiments.

Sure did, Very interesting thread for sure. Might have to go dig it up! But its my nap time so maybe in the morning! ;-)
 
nite nite!!! :-)
 
Well, spoke with the dealer I bought my stove from and they are going to come out and look at the stove next Monday which is great. I was expecting to just receive another snap disc. I'll post back what I hear. Still intrigued by the adjustable snap disk though, might be an option for my Castile.
 
Gotta get my bet down before they get there. A short somewhere along the way is frying the snap disks.
 
BrotherBart said:
Gotta get my bet down before they get there. A short somewhere along the way is frying the snap disks.

More likely they are those bakelite jobs that crack or flex messing up the contacts. A little heat and no workey.
 
I'm with BB - at the rate it's eating them, something electrical is going on; a shorted wire, bad motor, even a bad connection can do bad things. 4 discs in ½ ton = real problem.

But….I also have to wonder if they were not overtightened when installed, which could contribute to the situation Smokey mentions.

I'd better split my bet - 1¢ on each!
 
Well I can tell you I installed three of them and only snugged them up, I didn't really crank them down. Not sure if that's too tight, but I wouldn't expect that it would be...I should make a poll out of this!
 
goathead said:
Well I can tell you I installed three of them and only snugged them up, I didn't really crank them down. Not sure if that's too tight, but I wouldn't expect that it would be...I should make a poll out of this!

Ah yes a pool, were the ones you replaced with the last few times ceramic or the plastic/bakelite crud.
 
Change to the lower 110 snap disc for a Santa Fe, also change location of snap disk with the high limit sensor which is the yellow wires just above it. They went to this new design 3 years ago and its caused this problem.. Use high temp red silicone to seal up air leaks on that side of the air jacket. Also before you replace the snap disk, take it out and touch the face with a match, if the fan starts the disk is prob not bad. Just that this new location takes forever to collect enough heat to activate the disk.
 
humpin iron said:
Change to the lower 110 snap disc for a Santa Fe, also change location of snap disk with the high limit sensor which is the yellow wires just above it. They went to this new design 3 years ago and its caused this problem.. Use high temp red silicone to seal up air leaks on that side of the air jacket. Also before you replace the snap disk, take it out and touch the face with a match, if the fan starts the disk is prob not bad. Just that this new location takes forever to collect enough heat to activate the disk.

And be careful with the match test. There's 110 volts on that switch!!!!!
 
I have heard of bad snap disks but since I have been a Quad dealer we have not had one go bad on any stove we have sold. knock on wood. I would call the dealer because this is a warranty item. if you use other brands it could void the warranty.

Eric
 
humpin iron said:
110.......it's only a sparkle.

:bug: You haven't felt anything until you touch a 25,000 volt flyback transformer on an old TV.
 
tjnamtiw said:
humpin iron said:
110.......it's only a sparkle.

:bug: You haven't felt anything until you touch a 25,000 volt flyback transformer on an old TV.

Even off and unplugged them old timers could send you across the room.
 
kinsman stoves said:
I have heard of bad snap disks but since I have been a Quad dealer we have not had one go bad on any stove we have sold. knock on wood. I would call the dealer because this is a warranty item. if you use other brands it could void the warranty.

Eric

I asked my dealer about a spare one, he never heard one going bad.
 
tjnamtiw said:
humpin iron said:
110.......it's only a sparkle.

:bug: You haven't felt anything until you touch a 25,000 volt flyback transformer on an old TV.

BTDT! It hurts big time! And most of those old sets had regulated supplies, so they would try to keep the voltage up, even as you were getting nailed. And what hurt even more was the skin you lost when you jerked your hand out past the sharp sheet metal edges of the set.
 
SmokeyTheBear said:
tjnamtiw said:
humpin iron said:
110.......it's only a sparkle.

:bug: You haven't felt anything until you touch a 25,000 volt flyback transformer on an old TV.

Even off and unplugged them old timers could send you across the room.

Tell me about it!!!!! :red:
 
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