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Old 10-11-2009, 09:32 PM   #16
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Comfortmaker RPJ II Ignites then shuts off?


Well I pulled out the flame sensor rod and cleaned it up. Seems to be working now, however I will have to keep an eye on it over night to see.

It makes sence that the sensor could cut the gas, but it didnt seem all that dirty. Im just glad the heat is flowing again.

If this works I will be sure to report back. I am also going to start a few other threads because I am also insulating my attic and had some questions. I also have another heater in the garage that I am trying to fix.

I sure hope this works, and thanks everyone for the help so far!

If the flame sensor makes a big diffrence and the problems go away should I purchase and install a new one for good measure?

The first photo is before I cleaned it, the second on after. I used some steel wool and fine sand paper to clean it.
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Old 10-11-2009, 10:24 PM   #17
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Comfortmaker RPJ II Ignites then shuts off?


Guys, I know it aint morning yet, but this thing hasnt missed a beat since I cleaned that flame sensor!

I think we got it beat!

Set my new digital thermostat to 75 (Manual overide) and as soon as she dips to 73 she kicks on, flame stays lit and does what its supposed to do.

Im really impressed and I hope it keeps working. Thanks a whole lot guys! I could not have done it without you!

I am still considering getting another flame sensor to have as a backup, unless you guys dont think its nessisary.

Anyway, thanks again!
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Old 10-12-2009, 10:49 AM   #18
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Comfortmaker RPJ II Ignites then shuts off?


Unless you break the porcelain a flame sensor should not need replacing. Get the heat exchanger inspected for cracks and the popped rivets. Huge safety issue there. If you have a A coil directly on top of the furnace then it cannot be easily inspected. A small guy can remove the fan and crawl in and look at it from the bottom.
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Old 10-12-2009, 08:39 PM   #19
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Comfortmaker RPJ II Ignites then shuts off?


Do you really think that is necessary? Won’t the roll out sensor detect if the heat exchanger is damaged?

My unit does have an AC coil on top of it, and about the only person who could fit into the unit would be my kid, whom would have no idea what he is looking at. Surly there must be another way to test this?

I realize you are a pro at these things, and your advice has been spot on thus far. So what you say does make me feel a little un-easy.

I would also like to add that the furnace has not skipped a beat since I cleaned that flame sensor. Thank you.
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Old 10-12-2009, 09:19 PM   #20
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Comfortmaker RPJ II Ignites then shuts off?


The rollout sensor will detect a rollout due to a cracked heat exchanger but we like to catch them before it gets that bad. I also mentioned "budgeting" for a new one. Everyone of my customers pleads poverty when told they need a new furnace. Some people really are strapped for funds and still gamble and live carelessly. Setting aside some $$ and being prepared takes the eventual shock out of the process. Get 2 CO detectors for your house, 1 near your bedroom and 1 in the basement near the stairwell. Take a GOOD look at the flames before the fan cuts in. Then look at them after the fan runs and again after 5 minutes. If cracked you should see the flames being disturbed and sometimes rolling back.
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Old 10-12-2009, 09:26 PM   #21
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Comfortmaker RPJ II Ignites then shuts off?


Got it... I may send the kid in the hold tomorrow after school with the camera, if he will go along with it. I have a CO detector out in the garage, batteries are dead, but I will move it into the house. I only have one level so I think I shal place it in the kids room. I am a mechanic so I have been exposed to a lot of CO in my time, but thanks for the heads up.
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Old 10-12-2009, 10:14 PM   #22
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Comfortmaker RPJ II Ignites then shuts off?


Someone please correct me if i am wrong, but having a CO detector directly in the garage is a bad idea, as it will continuously be exposed to some amounts of CO making the detector less effective if I am right? Unless of course he is just storing it there and then just disregard.
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Old 10-12-2009, 10:18 PM   #23
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Comfortmaker RPJ II Ignites then shuts off?


I often times have vehicles running in the garage with exhaust tubes. I unplugged it because the battery was dead and kept beeping all the time. I have been exposed to so much CO thru my life its not even funny. It doesnt take much for me to start getting that acid like taste in my mouth. Heck sometimes I am forced to take a wiff of the tail pipe of my own accord! (And Im not talking about a Honda).

I dont keep many 9 volt batteries, as very few things take them anymore. Guess Ill need to pick one up.

Edit - It is a detached 3 car garage I should add.

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Old 10-12-2009, 10:22 PM   #24
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Comfortmaker RPJ II Ignites then shuts off?


SellC,

From other things I have read you may want to consider getting a new one to ensure its accuracy, while of course getting that heat exchanger checked. Heck for what you might pay for a 2 pack of 9v batteries these days, it might not be all that much more for a plug in CO detector!
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Old 10-12-2009, 10:27 PM   #25
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Comfortmaker RPJ II Ignites then shuts off?


The one I got is a plug in style, but it has a battery back up... I would think ALL of them have this feature, no?

I got mine some 3 years ago. Used it for 6 months and then just gave up because it would go off every time I brought in a car.

I recall it being almost $50, wonder if they have come down in price? Ill have to surf the HomeDepot again, boy I like that website.
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Old 10-13-2009, 12:10 AM   #26
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Comfortmaker RPJ II Ignites then shuts off?


You are counting six blinks?

That sixth fault was built in to the General 90 board in anticipation of safety up grades.

In the configuration you have it will react to many extraneous borderline safety situations.


You have a bad heat exchanger. The press switch on that system would flutter due to changing pressures in the penetrated heat exchanger, and when the sensor became grounded or dirty the sixth fault light tripped.
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Old 10-13-2009, 12:46 AM   #27
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Comfortmaker RPJ II Ignites then shuts off?


You really think the heat exchanger is bad?

Its been working great every since I cleaned the flame sensor.

I'm going to try and get a photo of the heat exchanger, and Ill even plug in the CO detector to see if any CO's are lurking, but I live by the age old rule of "If it aint broke, dont fix it."

Did I mention my snowblower was made in 1978?
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Old 10-13-2009, 06:06 AM   #28
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Comfortmaker RPJ II Ignites then shuts off?


Quote:
Originally Posted by SELLC View Post
You really think the heat exchanger is bad?

Its been working great every since I cleaned the flame sensor.

I'm going to try and get a photo of the heat exchanger, and Ill even plug in the CO detector to see if any CO's are lurking, but I live by the age old rule of "If it aint broke, dont fix it."

Did I mention my snowblower was made in 1978?
Your snow blower won't kill you in your sleep. Your furnace can.

Yuri speaks from a position of authority as he has plenty of experience
and technical knowledge.

I on the other hand speak from position of a dealer for your ICP product.

Of which I have been one since their inception in Mi back in the late '80s.

I have replaced enough bad heat exchangers and whole furnaces for the reason that Yuri stated.

We can't protect you from your self, but we can no longer any more qustions if you insist on using that equipment with out getting it checked throughly.

You are in Plymouth and I am in Macomb County; there is a supplier in the area who can provide you with a suprior dealer in your area that can give you the final word on your furnace
ANN ARBOR BRANCH
MAP
734-662-3184 Phone



FARMINGTON BRANCH
MAP
248-477-4900 Phone


Call which ever is closest to you to give your self peace of mind.

Please get back to us with what the out come is. We help for no money on this board because the business has been good to us. It is a way we give back.

But in the mean time I am going to ask the mod to temporarily close this thread.
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Old 10-13-2009, 06:29 AM   #29
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Comfortmaker RPJ II Ignites then shuts off?


Quote:
Originally Posted by SELLC
You really think the heat exchanger is bad?

Its been working great every since I cleaned the flame sensor.

I'm going to try and get a photo of the heat exchanger, and Ill even plug in the CO detector to see if any CO's are lurking, but I live by the age old rule of "If it aint broke, dont fix it."

Did I mention my snowblower was made in 1978?

Contact the right people at the numbers I left. They have telescopic TV cameras that get down inside with out disassembling the whole furnace.
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Old 10-13-2009, 06:34 PM   #30
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Comfortmaker RPJ II Ignites then shuts off?


Got my CO detector out of the garage and got a new 9volt. I then placed the CO unit inside the furnace room and cycled the heater to 80 degrees. No alarm. I also did a test in the bathroom, which is right next to the furnace room. I kept the door closed and still no alarm.

I think its safe to say the furnace is not putting out CO. Ill keep the CO detector in action over the winter just in case, but I think my furnace just needed the flame sensor cleaned.

Thanks guys, if I can ever help with some car advice, I owe you one.
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