Opened up that shutter thing you said and boom it worked! Thank you very much! Beautiful thing about RUclips is your videos will b up forever. So this year old video on 10/29/22 helped me out and if you are watching it in the future helps you too! Love from Los Angeles!
I want to thank you so very much , i was ready to go and buy a new furnace , but i watched your video and took your advice on the safety switch, i pushed in the reset button and it started working again ., thank you for your videos ., huge help for those that dont know much about furnaces .
Thank you Sir! Finally someone who learns to be construction savvy! That was EXACTLY what happened to my furnace! Frustrating because once it heats after kicking it, hitting the side with a hammer, a broom, etc , you go to sleep,. Only to wake up 45 minutes FREEZING 🥶! No real sleep... UNTIL your suggestion! Sleeping like a baby! House? Warm as ever! Thank you and can't thank you ENOUGH!
Finally went to my mom's house to check her wall furnace (cold weather and rain expected this week) that had the same symptoms as yours. I was ready to remove and change out that switch/sensor. I took off the cover and saw that there were a lot of dust bunnies everywhere including the inner grate. I cleaned out all the dust bunnies and voila...heater is working again.
Another possibility is that there is a problem with the vent system. For example, the cap on top of the vent on the roof might be pushed down, or the vent stack might not be long enough, or there might be trees or such near the vent. If the vent stack is not long enough then wind and weather can disrupt the flow and cause overheating which causes the switch to trip. Read the install instructions for your heater carefully.
So after I had a technician from SoCalEdison out here last week who couldn't pinpoint the problem, I decided to check for any RUclips videos which brought me here. I have the EXACT same Cozy wall heater with the same identical problem. The tech listed off all of the same possible problems: gas valve, thermostat, etc..... I even told him that when I'd tap the top area of the unit (you know, the area right next to the safety switch), it would turn on. You'd think these techs would watch RUclips videos from time to time to pick up on other people's experiences but I guess not. Turns out, my safety switch is fine; it's the connection of the two wires to the tabs that was faulty. Not sure what kind of wiring your unit has but mine are both aluminum (which sucks compared to copper!) I ended up splicing off the ends which exposed clean wire. I then crimped on new connectors and attached them to the switch tabs. So far, the system turns on every time the temp dips below the 67 degree preset I have on my thermostat. Thanks again for taking the time that you did to troubleshoot this! If I had to deal with another experience of waking up in the middle of the night to a home under 60 degrees because my wall heater didn't turn on I was going to lose it!
This video solved it! Thanks so much. I was throwing our kid towels on the heater for 30 seconds to warm them up post bath. The towel tripped that switch so simply pushing the button reset it and voila-it’s working again. Lesson learned!
This video just came in clutch ! I was trying to figure out why my heater wouldn’t turn on , even though the pilot was still going , and I honestly would have never guessed to look up at that part ! I gave it a little tap with a pencil to align it , and BOOM kicked on instantly! I appreciate the video bro ! 💯
Had the same issue replaced the blocked flue safety switch & problem solved. I was smacking mine in the middle of the the night also, your video saved me from replacing parts that were not the problem.
I was smacking in the middle of the night too. If the switch proves to not be the ultimate fix, like it did for me, make sure to watch the handful of videos I made on this...as I kept thinking I fixed it, and then it would return to this issue again and again.
@@brendastringfellow3130 Good! Sadly, don't be suprised if the problem returns. I hope it doesn't for you...but for me it came and went all last winter. It was awful.
@@HeartHandsMikey My problem came back a few days later. I sanded the connections on the bottom and rewired everything still won't start up on its own still having to hit the unit. I'm thinking of soldering the 2 wires together instead of a wire nut any thoughts. I haven't done anything with the top connections on the safety switch.
@@brendastringfellow3130 I strongly suggest you watch ALL of my videos on the furnace issue...because this is what kept happening to me. Basically, you have to go down the line and slowly start trouble shooting the issue and ordering replacement parts. Replace part by part and see which one fixes the issue. But seriously...take it from someone that didn't have these videos: WATCH THEM. they will help you big time.
Watching your videos was like looking in the mirror. (When the mirror wasn't frosted over) I can't believe how your situation was so exactly like ours. I'm on my way to Lowes right now to get the safety valve replaced. I'm sure that's it. P.S. my carbon monoxide meter is in the other room. I'll be moving it next to the heater today. Your a life saver. Literally, a life saver. Thank you thank you thank you.
my williams 5009622A gave alcoholism (not) for a long time! crossthreaded my gas valve too! used JB weld to reseal the leak. didn't work.installed a new unit yesterday. kept tripping the vent switch? a guy said his vent doesn't pop with a fan blowing at the plenum. the new unit has a vent switch closer to the heat. i moved it out to where the old heaters switch was.....been good so far! used to punch mine to fire up! jumping the gas valve red top to bottom black wire worked sometimes....wood run. a day or month tech said it was my Tpile wasn't the problem.
thanks! I used your video last year to troubleshoot my parent's heater and it worked. It started acting up lately and swapped out the safety switch today and it's back on! Thanks again for all your videos. Not sure if i remember you showing how to replace the thermopile in there, but maybe add if you ever need to do that? I'm sure that will be the next part i'm replacing.
are your parents warm and ok? Did you figure it out? I made multiple videos about the furnace. Make sure you watch them all as they are tricky buggers.
If it doesn't, I have a handful of videos showing you all the things I did to fix mine. All solutions are easy, cheap, fairly quick and proper. It just depends on which one is appropriate for you.
I have the exact same heater and it’s crapped out. I thought it was a thermostat. It’s not. Do you know the part number or where to buy the heat sensor switch? Thanks
@@HeartHandsMikey I've been looking online for the 84166 Cozy Heater Spill (limit) Switch and the blue connection wires. I see the switch around but not the blue wires. Is there an official name for those blue wires and where did you buy your replacement switch and wires? Any info would be helpful. Thank you.
Be sure to watch ALL of my videos on this. They are all in a playlist on my page. If you've been battling for 5 years, I think you will find a lot of helpful stuff on the videos.
I have replaced this switch about 10 times now in the last 4 yrs. Had so many HVAC techs not figure it out! Insisted they rewire it last time and it lasted a year with the new wires and crimps. I notice every North East wind episode which my flu is north side of house, vent safety switch burns out. All this has been happening since they rebuilt my flu 4 yrs ago. Now to figure out a way to protect flu from back draft!
This is a great video and great information. Than you. Sorry to ask the same question I'm sure you've answered 1 million times... But did the wiring come with the switch? Or did you order it separately? If you ordered it separately, what is the name of the wiring on Plumbers Stock? I can't find it. I'm certain this is the same issue with my heater. Thanks!
This video is exactly what was happening at a tenants house. I couldn’t figure it out so I called in a company and that’s exactly what they did! I know now for the future😂
It sounds like you had the exact same problem that I've been having for about 2 years. My only question is how do you even access the switch? Probably a dumb question but I have no idea how to get in there to fix it and I can't find any videos either.
I had the same exact issue. Just to add some credibility to your solution, I took the thermostat red wire (that was intertwined with the blue cable) and shorted it with the end of the other blue cable that’s connected to the gas valve. It turned on immediately. I looked at the blue wiring that ran up to the safety switch and saw that a section was burned up. I assume the wiring has gone bad. Thanks for the help!!
Just in case anybody reading this could use this as a solution for heat, can you elaborate? What do you mean by "shorted it"? Thank you so much for the comment! Hopefully this will help someone that is cold!
@@HeartHandsMikey He means connecting them together creating a short circuit. I did this also to troubleshoot mine. btw I've sold a few in my carrier and bought my Cozy thinking at least I have a connection to the company... I've replaced the switch almost every year. I would also like to suggest taking a small plastic tube (maybe 2 feet) and blowing all the dust and debris out (using your lungs) it's necessary yearly maintenance.
@@HeartHandsMikey oh yeah, absolutely! I just happen to have 1/4 tubing in my garage from gardening. I learned that trick from our local natural gas company, a little blow and vacuum every year really helps!
what was it doing to show u that u had a problem ? did it fire up and kick off right before the blower should of turned on ? im having that issue and i cant find a solution
Yes that's exactly what would happen. It also would not kick on all at times. Id have to smack the side of it and then it would fire up. Look at all my videos on this because I did fix it successfully.
I changed the safety switch wire out with 18/2 gage solid copper strand and I haven't have any issues since then. I believe the original wire was to light and it was stranded so the current was having an issue tripping the safety switch. I also wrapped the wire at the top of the heater where it connects to the safety switch with aluminum foil because it gets really hot and it will help keep the wire insulation from melting or cracking. So far only part not needed was the safety switch. The replacement wire is 25 foot at Lowes for only $5.00 I will keep you posted if the problem comes back, but so far so good.
@@HeartHandsMikey they were both getting hot. I don't think heat was the issue the original wire was just to thin and the milli voltage could not generate enough power to operate the safety switch. I just wrapped the wire because it won't hurt anything & possibly help in the long run. I only like to do a job once & not have to do it over a few years later. Heater still kicking on all night & day with no issues in 4 days.
@@brendastringfellow3130 wow good for you! I wonder then if I even needed to replace my gas valve? Mine seems to be working perfectly now, but darn, out of all the advice I sought out online as well as from local heating professionals, no one thought to use a heavier gauge wire. Way to go!
How can I get the same safety switch for the exact same unit you have? If you can please give me the code the link where I can buy it please. Thank you
@@yeyopedroza6594 You have to use the correct switch for your furnace! You can't just put any random limit switch into it's place. You can look in your manual or go to a good HVAC supply place (Locke, where I am, but there are hundreds), give them the exact model of your furnace, and tell them you want the blocked flue limit switch. They can look it up. But it is better if you learn how to read the parts diagram for your furnace yourself, as well. It will have the part number. Some switches will work in multiple furnaces and go by multiple part numbers, but you must have the right one. If you don't, then it will either trip too easily or not at all -- and not tripping at all is a major safety hazard!
I also have a cozy heater smaller model about 4 yrs old. When I push in the pilot there is zero gas entering.It will not ignite. I was told to replace the valve. Any suggestions.
I'm no professional. In fact, I couldn't find a professional that would touch this furnance with a ten foot pole...but yes that sounds like the valve to me, which I have a video on. Everyone makes it like the valve is an impossible job, but it isn't at all. If a musician like me can do it, anyone can. Just be safe with gas and shut it off, have proper ventilation, don't do obviously dumb things like smoke or have open flames close by, do the classic soapy water test, and I whole heartedly suggest that you buy not only a carbon monoxide detector, but also a gas leak detector. I got mine at home depot for like $12. Better to spend $12 and detect a small leak and be able to simply tighten the fitting on the valve than has a small leak you didn't notice and be dead! But honestly, the valve is a little pricey ($100 I think) and the wrenches I bought to get proper torque were big and therefore a bit pricey, plus some pipe dope and pipe tape and good rubber grip work gloves to really grip the wrenches, but it wasn't "hard", it was more so just having the tools to do it and if I didn't have them, making yet again another trip to walmart or home depot. It found it to be like anything home improvement wise: not hard, just need to be safe and do it. And that's coming from someone who isn't that good at home improvement. When you cold and have no help...you get motivated.
Unfortunately, I'm in Florida for at least 4 months and therefore not anywhere near the bag, however I will post what I have from the digital receipt: Description: Cozy 84166 , Blocked Flue Switch. Part Number: 537643
I just watched a different video that said you fixed it by cleaning and tightening the safety wire connections, then accidentally came across this one about safety switch replacement. Is it still working now ?
Yes, has been a very long road of thinking it is fixed then it will run for an hour or a day or a week and then I am back to the drawing board. I am happy to say that according to my dad that is up there and checking on it every so often that he reports it works fine, kick on and off and warms the house. I recommend you watch all the videos and start trying the different things I suggest and the different things people have suggested in the comments. Everyone has similar issues, but the fixes are all different.
@@HeartHandsMikey thanks for reply!! My first ever. I did get it to fire up - for a second. :( Maybe that safety switch - can’t remember if heater guy replaced that before we gave up last winter. Anyway, thanks!!
@@anngotthoffer3950 Absolutely! And so begins the journey so many of us have made here in the comments section. Take your time and know that there is a solution, its just a matter of which one from the videos I post is it?
Hello Mike, Well, if your "Blocked Flue Switch" method is the solution, I wish I could split all the money the plumbers who installed our POS Cozy heater have bilked our landlord for, and we'd be able to buy SEVERAL heaters. This thing has tormented me since it was installed, and the plumbers always blame the fact that I have installed a more sophisticated thermostat than the POS one which appropriately shipped with the POS heater. I try to explain to them that it's simple physics: a switch is a switch is a switch. I appreciate you spreading the word about what has had to be immensely frustrating. My best, Paul
What's funny is that I heard that too, that you cannot install any kind of technical switch to it. The thermostat/switch has to be the one that comes with it or just like that one that comes with it. I went through many thermostats...I do not believe that that played a factor. Then again, who knows...these things have ghosts in them.
There's your FIRST problem...you hired a plumber to do the job of an HVAC tech's job. You don't hire a heating/ventilation/air conditioning technician to install a toilet. ~DERP
Did you write a song about it when you (and Florida guy) finally fixed it? I don't care for that particular kind of safety switch, (the one that went bad) with the exposed springy contacts on the back. As you found out, they can stick slightly together resulting in you trial & tribulations. I have different ones on my furnace (called Spill switches)and they have a re-set button on the back of them. So if they are tripped, you know you have excess heat backing up.
That happened because people don’t want to pay a technician to look at it, some people rather dye with a house fire, carbon monoxide than calling a mechanical contractor. 😂
Opened up that shutter thing you said and boom it worked! Thank you very much! Beautiful thing about RUclips is your videos will b up forever. So this year old video on 10/29/22 helped me out and if you are watching it in the future helps you too! Love from Los Angeles!
Aww that makes me so happy to hear! I want everyone to be warm! Its scary if you don't have the cash but need heat quick. I'm happy I could help.
I want to thank you so very much , i was ready to go and buy a new furnace , but i watched your video and took your advice on the safety switch, i pushed in the reset button and it started working again ., thank you for your videos ., huge help for those that dont know much about furnaces .
Thank you Sir! Finally someone who learns to be construction savvy! That was EXACTLY what happened to my furnace! Frustrating because once it heats after kicking it, hitting the side with a hammer, a broom, etc , you go to sleep,. Only to wake up 45 minutes FREEZING 🥶! No real sleep... UNTIL your suggestion! Sleeping like a baby! House? Warm as ever! Thank you and can't thank you ENOUGH!
Finally went to my mom's house to check her wall furnace (cold weather and rain expected this week) that had the same symptoms as yours. I was ready to remove and change out that switch/sensor. I took off the cover and saw that there were a lot of dust bunnies everywhere including the inner grate. I cleaned out all the dust bunnies and voila...heater is working again.
Another possibility is that there is a problem with the vent system. For example, the cap on top of the vent on the roof might be pushed down, or the vent stack might not be long enough, or there might be trees or such near the vent. If the vent stack is not long enough then wind and weather can disrupt the flow and cause overheating which causes the switch to trip. Read the install instructions for your heater carefully.
So after I had a technician from SoCalEdison out here last week who couldn't pinpoint the problem, I decided to check for any RUclips videos which brought me here. I have the EXACT same Cozy wall heater with the same identical problem. The tech listed off all of the same possible problems: gas valve, thermostat, etc..... I even told him that when I'd tap the top area of the unit (you know, the area right next to the safety switch), it would turn on. You'd think these techs would watch RUclips videos from time to time to pick up on other people's experiences but I guess not. Turns out, my safety switch is fine; it's the connection of the two wires to the tabs that was faulty. Not sure what kind of wiring your unit has but mine are both aluminum (which sucks compared to copper!) I ended up splicing off the ends which exposed clean wire. I then crimped on new connectors and attached them to the switch tabs. So far, the system turns on every time the temp dips below the 67 degree preset I have on my thermostat.
Thanks again for taking the time that you did to troubleshoot this! If I had to deal with another experience of waking up in the middle of the night to a home under 60 degrees because my wall heater didn't turn on I was going to lose it!
Yes, it protects against backdraft by opening circuit when it overheats due to obstructed exhaust
This video solved it! Thanks so much. I was throwing our kid towels on the heater for 30 seconds to warm them up post bath. The towel tripped that switch so simply pushing the button reset it and voila-it’s working again. Lesson learned!
This video just came in clutch ! I was trying to figure out why my heater wouldn’t turn on , even though the pilot was still going , and I honestly would have never guessed to look up at that part ! I gave it a little tap with a pencil to align it , and BOOM kicked on instantly! I appreciate the video bro ! 💯
There you go! Awesome!!
Had the same issue replaced the blocked flue safety switch & problem solved. I was smacking mine in the middle of the the night also, your video saved me from replacing parts that were not the problem.
I was smacking in the middle of the night too. If the switch proves to not be the ultimate fix, like it did for me, make sure to watch the handful of videos I made on this...as I kept thinking I fixed it, and then it would return to this issue again and again.
@@HeartHandsMikey replaced it days ago and working great so far.
@@brendastringfellow3130 Good! Sadly, don't be suprised if the problem returns. I hope it doesn't for you...but for me it came and went all last winter. It was awful.
@@HeartHandsMikey My problem came back a few days later. I sanded the connections on the bottom and rewired everything still won't start up on its own still having to hit the unit. I'm thinking of soldering the 2 wires together instead of a wire nut any thoughts. I haven't done anything with the top connections on the safety switch.
@@brendastringfellow3130 I strongly suggest you watch ALL of my videos on the furnace issue...because this is what kept happening to me. Basically, you have to go down the line and slowly start trouble shooting the issue and ordering replacement parts. Replace part by part and see which one fixes the issue. But seriously...take it from someone that didn't have these videos: WATCH THEM. they will help you big time.
Thank you!!!! I just tapped the safety switch and it came on. Thank you 😃
Watching your videos was like looking in the mirror. (When the mirror wasn't frosted over) I can't believe how your situation was so exactly like ours. I'm on my way to Lowes right now to get the safety valve replaced. I'm sure that's it. P.S. my carbon monoxide meter is in the other room. I'll be moving it next to the heater today. Your a life saver. Literally, a life saver. Thank you thank you thank you.
my williams 5009622A gave alcoholism (not) for a long time! crossthreaded my gas valve too! used JB weld to reseal the leak. didn't work.installed a new unit yesterday. kept tripping the vent switch? a guy said his vent doesn't pop with a fan blowing at the plenum. the new unit has a vent switch closer to the heat. i moved it out to where the old heaters switch was.....been good so far! used to punch mine to fire up! jumping the gas valve red top to bottom black wire worked sometimes....wood run. a day or month tech said it was my Tpile wasn't the problem.
Omg. You're so right ✅. I'm having the same problem. And as soon as I touched the sensor the heater came on. Thank you so much.
Stay warm!
Love your video! It really helps! Could you let us know the part number and place where you get the safety switch replacement? Thanks!
thanks! I used your video last year to troubleshoot my parent's heater and it worked. It started acting up lately and swapped out the safety switch today and it's back on! Thanks again for all your videos. Not sure if i remember you showing how to replace the thermopile in there, but maybe add if you ever need to do that? I'm sure that will be the next part i'm replacing.
are your parents warm and ok? Did you figure it out? I made multiple videos about the furnace. Make sure you watch them all as they are tricky buggers.
This is exactly what is wrong with mine! God bless ya, my child!!
Thank you! I need the blessings!
I have the same furnace, same issue..... thanks for the great info I hope this works🤞
If it doesn't, I have a handful of videos showing you all the things I did to fix mine. All solutions are easy, cheap, fairly quick and proper. It just depends on which one is appropriate for you.
Fixed my heater. Thanks. Mine actually had a red reset button. Good job, homes.
Thank you! Happy you are warm!
Thank you for sharing. Resembles my furnace symptoms, touch wire going up to get heat. You may have helped save me money.
no problem, be sure to watch the other videos about the furnace in my playlist. It will really help you.
Awesome Mikey, thank you!! What is the part #?
I have the exact same heater and it’s crapped out. I thought it was a thermostat. It’s not. Do you know the part number or where to buy the heat sensor switch? Thanks
I know this post is old but that switch is a safety switch for the high limit so it doesn't get too hot it has nothing to do with carbon monoxide
I know, I was just being through. thanks!
Any gas heater has the potential to leak it’s carbon monoxide exhaust into the indoor living area if the flue is not properly vented
@@HeartHandsMikey I've been looking online for the 84166 Cozy Heater Spill (limit) Switch and the blue connection wires. I see the switch around but not the blue wires.
Is there an official name for those blue wires and where did you buy your replacement switch and wires? Any info would be helpful. Thank you.
Thank you my friend very good video very well explain GOD BLESS you
Where did you buy the safety switch
Drats no link to part If u see this comment, can u please reply where you got the limit switch and for $10 !
You saved the day, Problem solved. youre genius. thank you.
Stay warm! Happy to help!
Can you say where I can get one of those safety switch to buy. I really need to replace mine. Thank you.
Mikey, where did you buy that safety switch because that is exactly what’s going on with my wall heater ! Please post so I can get one. Thank you
I think I bought it from Plumbers Direct online
Omg. Same story here. I been fighting this for over 5yrs. This the only thing that hasn't been done. I'll try this soon and I'll let you know.
Be sure to watch ALL of my videos on this. They are all in a playlist on my page. If you've been battling for 5 years, I think you will find a lot of helpful stuff on the videos.
I have replaced this switch about 10 times now in the last 4 yrs. Had so many HVAC techs not figure it out! Insisted they rewire it last time and it lasted a year with the new wires and crimps. I notice every North East wind episode which my flu is north side of house, vent safety switch burns out. All this has been happening since they rebuilt my flu 4 yrs ago.
Now to figure out a way to protect flu from back draft!
This is a great video and great information. Than you.
Sorry to ask the same question I'm sure you've answered 1 million times... But did the wiring come with the switch? Or did you order it separately? If you ordered it separately, what is the name of the wiring on Plumbers Stock? I can't find it. I'm certain this is the same issue with my heater. Thanks!
It's hard for me to remember, but I do believe it came with it.
I'm trying this right now! Will see
This helped me out thanks👍
Where did you get the switch? And what part number is it please let me know!!
I believe I ordered it directly through the company. I'd gladly give you the part number, but I don't have it on me. It's in PA and I'm in FL.
This video is exactly what was happening at a tenants house. I couldn’t figure it out so I called in a company and that’s exactly what they did! I know now for the future😂
It sounds like you had the exact same problem that I've been having for about 2 years. My only question is how do you even access the switch? Probably a dumb question but I have no idea how to get in there to fix it and I can't find any videos either.
I have a whole series on my page about it. Remove the huge face plate and Look up top of the furnace. See my other videos
Then you should probably hire an HVAC tech before you end up burning down your house trying to save a few dollars!
Thank you soon as I pushed the the button on that it kicked right on
Good! Thank God! Are you warm now?
I had the same exact issue. Just to add some credibility to your solution, I took the thermostat red wire (that was intertwined with the blue cable) and shorted it with the end of the other blue cable that’s connected to the gas valve. It turned on immediately. I looked at the blue wiring that ran up to the safety switch and saw that a section was burned up. I assume the wiring has gone bad. Thanks for the help!!
Just in case anybody reading this could use this as a solution for heat, can you elaborate? What do you mean by "shorted it"? Thank you so much for the comment! Hopefully this will help someone that is cold!
@@HeartHandsMikey He means connecting them together creating a short circuit. I did this also to troubleshoot mine. btw I've sold a few in my carrier and bought my Cozy thinking at least I have a connection to the company... I've replaced the switch almost every year. I would also like to suggest taking a small plastic tube (maybe 2 feet) and blowing all the dust and debris out (using your lungs) it's necessary yearly maintenance.
@@vulpineking215 great advice as well! Could you also get some compressed air and hit the components with that?
@@HeartHandsMikey oh yeah, absolutely! I just happen to have 1/4 tubing in my garage from gardening. I learned that trick from our local natural gas company, a little blow and vacuum every year really helps!
High limit safety cut out on thermostat switch..
can someone point me where to buy this part?
what was it doing to show u that u had a problem ?
did it fire up and kick off right before the blower should of turned on ? im having that issue and i cant find a solution
Yes that's exactly what would happen. It also would not kick on all at times. Id have to smack the side of it and then it would fire up. Look at all my videos on this because I did fix it successfully.
I changed the safety switch wire out with 18/2 gage solid copper strand and I haven't have any issues since then. I believe the original wire was to light and it was stranded so the current was having an issue tripping the safety switch. I also wrapped the wire at the top of the heater where it connects to the safety switch with aluminum foil because it gets really hot and it will help keep the wire insulation from melting or cracking. So far only part not needed was the safety switch. The replacement wire is 25 foot at Lowes for only $5.00 I will keep you posted if the problem comes back, but so far so good.
this is great info. Was your old wire getting hot too, or just the new one?
@@HeartHandsMikey they were both getting hot. I don't think heat was the issue the original wire was just to thin and the milli voltage could not generate enough power to operate the safety switch. I just wrapped the wire because it won't hurt anything & possibly help in the long run. I only like to do a job once & not have to do it over a few years later. Heater still kicking on all night & day with no issues in 4 days.
@@brendastringfellow3130 wow good for you! I wonder then if I even needed to replace my gas valve? Mine seems to be working perfectly now, but darn, out of all the advice I sought out online as well as from local heating professionals, no one thought to use a heavier gauge wire. Way to go!
@@HeartHandsMikey probley didn't need the gas value.
@@brendastringfellow3130 but what's weird is that replacing the gas valve has it working perfectly now.
I love you tube and your videos
How can I get the same safety switch for the exact same unit you have? If you can please give me the code the link where I can buy it please. Thank you
I bought through PlumbersStock.com originally so they are where my account is.
@@HeartHandsMikey I have a double wall furnace and wondering if I can use the same spill switch?
@@yeyopedroza6594 You have to use the correct switch for your furnace! You can't just put any random limit switch into it's place. You can look in your manual or go to a good HVAC supply place (Locke, where I am, but there are hundreds), give them the exact model of your furnace, and tell them you want the blocked flue limit switch. They can look it up. But it is better if you learn how to read the parts diagram for your furnace yourself, as well. It will have the part number. Some switches will work in multiple furnaces and go by multiple part numbers, but you must have the right one. If you don't, then it will either trip too easily or not at all -- and not tripping at all is a major safety hazard!
@@CoyoteDan1 What is the easiest way to tell what model my furnace is? Thanks.
Please tell me where you bought the wiring (name) and safety switch. Thank you. I've had same issues as you.
Plumbers Direct online
Sorry, Plumbers Stock online. They sell direct. Thats where I bought the unit from as well.
I noticed my safety switch used to click but now it's all stiff. You think it's going bad?
I don't know but I'll bet it is.
How do you access the safety switch at the top? I can see it. Do I take the entire cover off the heater?
Yes, remove the entire cover. See my other videos.
I wish you could made a video on how to proper clean up the wall furnace
I also have a cozy heater smaller model about 4 yrs old. When I push in the pilot there is zero gas entering.It will not ignite. I was told to replace the valve. Any suggestions.
I'm no professional. In fact, I couldn't find a professional that would touch this furnance with a ten foot pole...but yes that sounds like the valve to me, which I have a video on. Everyone makes it like the valve is an impossible job, but it isn't at all. If a musician like me can do it, anyone can. Just be safe with gas and shut it off, have proper ventilation, don't do obviously dumb things like smoke or have open flames close by, do the classic soapy water test, and I whole heartedly suggest that you buy not only a carbon monoxide detector, but also a gas leak detector. I got mine at home depot for like $12. Better to spend $12 and detect a small leak and be able to simply tighten the fitting on the valve than has a small leak you didn't notice and be dead!
But honestly, the valve is a little pricey ($100 I think) and the wrenches I bought to get proper torque were big and therefore a bit pricey, plus some pipe dope and pipe tape and good rubber grip work gloves to really grip the wrenches, but it wasn't "hard", it was more so just having the tools to do it and if I didn't have them, making yet again another trip to walmart or home depot.
It found it to be like anything home improvement wise: not hard, just need to be safe and do it. And that's coming from someone who isn't that good at home improvement. When you cold and have no help...you get motivated.
Change the thermocouple first.
Where can I buy the switch? Part number?
Can you put the picture of the sku that is on the plastic bag that came with the safety switch
Unfortunately, I'm in Florida for at least 4 months and therefore not anywhere near the bag, however I will post what I have from the digital receipt:
Description: Cozy 84166 , Blocked Flue Switch.
Part Number: 537643
@Mikey hearts hands Mickey thank you for the information
I just watched a different video that said you fixed it by cleaning and tightening the safety wire connections, then accidentally came across this one about safety switch replacement. Is it still working now ?
Yes, has been a very long road of thinking it is fixed then it will run for an hour or a day or a week and then I am back to the drawing board. I am happy to say that according to my dad that is up there and checking on it every so often that he reports it works fine, kick on and off and warms the house.
I recommend you watch all the videos and start trying the different things I suggest and the different things people have suggested in the comments. Everyone has similar issues, but the fixes are all different.
@@HeartHandsMikey thanks for reply!! My first ever. I did get it to fire up - for a second. :( Maybe that safety switch - can’t remember if heater guy replaced that before we gave up last winter. Anyway, thanks!!
@@anngotthoffer3950 Absolutely! And so begins the journey so many of us have made here in the comments section. Take your time and know that there is a solution, its just a matter of which one from the videos I post is it?
Does the safety switch come with the blue cables when you order?
I do believe so!
Hello Mike,
Well, if your "Blocked Flue Switch" method is the solution, I wish I could split all the money the plumbers who installed our POS Cozy heater have bilked our landlord for, and we'd be able to buy SEVERAL heaters.
This thing has tormented me since it was installed, and the plumbers always blame the fact that I have installed a more sophisticated thermostat than the POS one which appropriately shipped with the POS heater.
I try to explain to them that it's simple physics: a switch is a switch is a switch.
I appreciate you spreading the word about what has had to be immensely frustrating.
My best,
Paul
What's funny is that I heard that too, that you cannot install any kind of technical switch to it. The thermostat/switch has to be the one that comes with it or just like that one that comes with it. I went through many thermostats...I do not believe that that played a factor. Then again, who knows...these things have ghosts in them.
There's your FIRST problem...you hired a plumber to do the job of an HVAC tech's job. You don't hire a heating/ventilation/air conditioning technician to install a toilet. ~DERP
Did you write a song about it when you (and Florida guy) finally fixed it? I don't care for that particular kind of safety switch, (the one that went bad) with the exposed springy contacts on the back. As you found out, they can stick slightly together resulting in you trial & tribulations. I have different ones on my furnace (called Spill switches)and they have a re-set button on the back of them. So if they are tripped, you know you have excess heat backing up.
Is it still working?
How do you get to the switch?
Where do I find the blue wire
What do you mean where do you find it? Same place as in this video.
Jeez- I just blew the dust off those wires and after three weeks of scratching my head it finally fired up
when you kicked it probably would shake the safety sensor best way to check it is to jump it temporarily
Possible for some. I replaced that and it was still having the same issue.
Where can I get the switch????
You my he dude!
Thank you so much....so so much
What with the blue fingernails?
well...why not...
Just asking
That happened because people don’t want to pay a technician to look at it, some people rather dye with a house fire, carbon monoxide than calling a mechanical contractor. 😂
I’m having a hard time finding this part… can someone point me in the right direction?
Keeping extra switches on hand they fail often
Why didn't you just press the button rather buy a new one to reset the safety switch.