Rollout Switch keeps tripping on Comfortmaker Gas Pack

any advice? i'm thinking about replacing the switch. I'm not reporting any CO in the house, so I don't the think the heat exchange is bad. I've noticed by the igniter on the burner the flame is touching the top plate that the rollout switch is attached to.

 

http://www.youtube.com/watch?v=F4vKKRZIrSY&feature=youtu.be it makes sense if the plate gets to hot to trip the rollout switch

 

CALL A PRO!!!! You sir, I almost guarantee have a failed heat exchanger. This is not DIY, This is not I'll just keep resetting the switch, This could be fatal! Call a pro please!

 

had a pro here the other day and diagnosed the control board as to why the fans kept running and not letting things cycle through. we replaced the control board and the problem ended up being the tripped rollout switch. i've reset it twice, but this morning it burned fine with no interruption as i observed it for 30 minutes. I've got another appointment with a tech Monday morning and i've indicated that we will need to look at the heat exchanger to see its condition. I just figured I would be picking up some sort of CO readings in my house if there was a problem with the heat exchanger.

 

No, just because a heat exchanger has a crack or a hole does not mean that the flue gases will leak out, it does mean that it has the potential to do so. The other option is that the air circulated across the HE will blow into it.

Also, CO alarms are not detectors. Co alarms are very dumbed down to get their UL listing. Read more @ coexperts.com. A detector is what I use at work that cost $1000+ and is very accurate and gets calibrated before every heating season.

 

while i completely agree with you in regards to the CO meter vs detector, I would assume that a detector is going to pick up an unsafe level of CO in the air. Otherwise what would be the point of the detectors.

Just curious how someone would just assume by my video that the heat exchanger has failed. The rollout switch just tripped for the first time yesterday. I plan to use a camera on Monday to look inside the unit to inspect the heat exchange. This is will obviously rule out the condition of the unit.

Any advice on replacing the heat exchange or the whole unit? I know changing out the heat exchange can be labor extensive, but the part seems relatively cheap. What would a bottom of the line 3 ton package unit go for these days installed. i plan to sell the house in the next year or so, so I don't care to spend that much money on a good system.

 

Your flames were rolling out. Yes, the pilot was hitting the switch or there abouts, but that looked like the flames were surging which is indictive of a failed HE. The pilot would also not between pulling into the heat exchanger if it had a large hole init. Most times if the roll out switch is tripping it is due to a failed or plugged HE. By the way, the only way to confirm a heat exchanger failure is to view it from the outside, not just from the inside.

 

If that gas pack is over 10 years old, I'd almost guarantee the heat exchanger has failed. At least that's the case around here.

 

I wouldn't go to sleep with something like that heating my house.

A new roll out switch would also continue to trip until the heat exchanger or entire unit was replaced.

 

I'm convinced there is some sort of a heat exchanger issue. i've left the unit off since it tripped.

question, do i really need a service call or should i go ahead and just schedule to have the exchanger or unit replaced and save the money

i'm looking at a 3 ton system to replace if this is the case. the warranty was 10 years, so that option is out. i would have to buy the new heat exchanger and pay for the labor. what is the typical cost for a new 3 ton package unit? like i said earlier, i will be selling this house so economical is the plan

any help appreciated.

 

I couldn't begin to tell you the cost of a new unit since prices in different areas vary widely as do prices from brand to brand. As a selling point, "new furnace & air conditioner" is always a plus.