Sir... I sincerely thank you! It's a cold Sunday morning in December. We woke up to no heat and a blank thermostat. Your video guided me to a simple solution: a pair of double A batteries. Thank you again!!!
@@21toadian the drain line was clogged. I had to flush from inside and outside using a hose with a nozzle attached and bleach to loosen the clog. Just be careful inside around the electrical.
Thank you! The problem was the float switch. I opened it to pour in some ac build up remover. Was getting super frustrated and tried wiggling around and reinserting the tab for it and it worked.
Thank you, you just saved me and my family $$$, ended up being a little moisture in our drain line causing the switch to show water... drained it and we are good to go!!! Again, THANK YOU VERY MUCH!!!
Thank you!!! As soon as you mentioned float switch, I ran up to check my attic. Heard one unit running and the second one silent. Looked down and saw the pan was full. Liked and subscribed!
Thank you, son, for this video. My thermostat is brand new (less than a week installed), and went blank. I know it is hard-wired, but I put batteries in it and it came back on, so at least for tonight it is working. I have a technician coming in the morning.
To Johnny Law, The professionals know their stuff, DIYers sometimes falter, make mistakes, cause havoc, no license, and liability up to their necks if negative circumstances arise.
Thank you for the video. My central air unit/furnace shut down like it should because my p-trap was completely clogged. I replaced the p-trap with an E-Z trap and the AC has been working great. The water is supposed to drain to the outside of the house, but I don't see any water coming out. I heard that there should be about 1 gallon of water draining every two days. I live in a fairly new single level house. There's no water leaking around the central air unit/furnace or in the rooms beside the furnace closet. Where's the water draining? Should I be concerned? Thank you.
Thanks for sharing your knowledge. My buddy called me this afternoon (only 95 today) to tell me that his thermostat screen was blank. Thanks to your video I was able to suggest that he check his Float Switch. Sure enough, all he had to do was give it a twist and his system is back online. His house was only up to 81 .... but it wouldn't have been a comfortable night's sleep.
My daughter just bought a house. The Carrier unit, when heat is on... will start making a random clicking noise. We noticed when it started clicking, the thermostat is blank. It's an old school thermostat. We have to flip it to off then back on to get the thermostat to wake up. Not sure what is going on with it.
I got up for work, and my house was super hot like 85 with thermostat set at 73. So I checked, and my thermostat is blank and replaced the batteries and still blank, but the furnace was still going and blowing hot air... probably way hotter than it's ever blowed. So what would cause this as once I got to the basement the furnace stopped blowing
Man I just paid $10k in January to fix my heat pump and replace duct work after purchasing in November 2023. Money my thermostat went out and I dreaded calling because of the cost. I opened up the panels and realized there was still power going to the unit found your video today (Saturday) the weather has been really good didn’t really need heat or a/c the drain line was tilted up a little I pushed it down a little water came out went in the house and in 5 minutes the unit kicked back on
@@NewHVACGuide The new batteries should show some information on the thermostat's face, even when not connected to the other part of the plate. Mine shows diddly (nothing). Why?
Thanks for the video. I wish I had seen your video first. Power was out to my Bryant Evolution Connex. I tried online recommendations and it said get a new one ($700-$1200 ish). I was stoked that I won one on auction for $400. Waited a week in a bedroom that was 82 degrees. Installed it once it arrived and it didn't work. A buddy of mine at a local HVAC company told me to check the low voltage wires. There was no power, then he said I need an electrician. I then stumbled across your video. My drain line was clogged. I don't know how it slipped my mind.....I guess the bill could've been worse (week and a half of sweating, and $400 for a new thermostat that I can't return).
I replaced the batteries in the thermostat in a fifth wheel im staying in but it's still blank. Heating works. Ac works (even auto) but it just shows blank.
Thank you. I followed the wire that's connected to and noticed the other end of the wire (located in the basement) is not connected to anything. What should I do?
Float switch will ride up (float) if there is no drainage. Look for the condensate pipe. The float switch has wires coming to it. Blow out the pipe to get rid of the clog. Ensure drainage is good.
Thank you man. Leaned senser on roof all started but pump. There is TH4B - Luxaire unit have lead on the side, and black sensor underneath. I moved that sensor before I go on the roof, when cleaned come back, and put lid back, reset unit, and nothing. Pump won't start
My thermostat is blank and I went out and bought a new one.And put it in and still stayed blank.But the furnace started and is working, but now it's getting too hot in the house.Because there's you don't know what temperature it is
Thank you so much. My thermostat was blank and because of this video, I went outside and lowered the drain hose ( I had moved it because it was attracting ants.) Within 5 minutes the thermostat came alive!
What could it be when thermostat goes blank , unresponsive to tap. But screen comes on again each day when set time for AC to go on. Then screen black again until cycle on time starts again next day?
my thermostat did say low battery, there were batteries in there, i put NEW batteries in, screen is blank but air is flowing through the vents but not cold air…..????
My heat was running fine a couple hours later my thermostat went blank. Ive never had batteries in my thermostat, so i put batteries in and the display of the thermostat came on put my heat or AC still would not kick on?? What is my issue???
I have a Bryant evolution deluxe user interface which we can not reset any of the programs our model is systxbbuid01-c is it okay to replace with systxbbuid01-d my series is 19 and the replacement one in series 24 hoping its because of the newer models can not find the exact one I have , but their replacements look identical thank you for your help.
I just got a new ac unit outside in May a Lennox 15.2 seer 3 ton unit for a 1492 square ft home for $4000. I opted not to get the whole HVAC system done, so nothing done in the attic. My home was built in 2010, outside unit was replaced due to dead compressor. I noticed today on thermostat ( 2 months later) that screen was blank. I put batteries in it for the first time ever because I never had this problem. That still didn't work. My ac company now tells me it can be the float switch, I got a feeling their about to charge more thousands. Can this issue be because of faulty installation. What should I check for and asked them before they act like installer couldn't possibly did anything wrong. 11 years in my home and I've never had this problem.
If your thermostat goes blank 95% of the time your safety switch has been activated because your drain pan is getting clogged. Check your safety switch first if it’s clogged than your best bet is to get a shop vac and suck the drain line from the outside by your condenser unit while pouring hot water down your drain line from the inside unit to clear out any possible gunk
Our thermostat honeywell lyric is blank. When I changed the battery it displays a message says no power is coming check the circuit breaker. I checked the circuit breaker doesn't see any one tripped. Can you help us to see how we can fix this problem.
Tried all these and it wasn’t the diagnosis, finally had a pro come out (210$ Later) & the breaker flipped on the bottom right of my “ Air Handler/Furnace”(Not the breaker to the home). So check that also before spending. Pro was in my home for 15min🤦🏾
Asked him that to. He just said it was really rare apparently. And again it was on my air handler not the home panel. Would love to figure out why it happened.
I have a serious question that no tech seems to be able to answer. What causes the compressor to make a rough sound when it kicks on? It seemed to stop at one point when it was recharged after i had a leak. But then it starting making that loud sound on start up again in just a few days. I live in FL and findging a good, honest tech that doesnt rip you off is hard.
Recharging refrigerant has done nothing unless the leak was repaired. That electric motor in that compressor needs vapor refrigerant to cool those windings. The mechanical portion in that compressor needs the oil for lubrication of the moving/mechanical parts, no matter what type of compressor. When you have a leak & run low on gas, the compressor motor windings are not being cooled; along with losing refrigerant due to a leak, you are also losing oil that is needed for lubrication.
I have a Honeywell WiFi smart thermostat. Last night it kept shutting down and going dark every 15 minutes or so and then starting back up. Anyone else have that problem? I believe it to a model RTH9585WH.
I just realized there was a power outage for 3 hours in the middle of the night. That seems to be when it quit working. Break check in the morning. My a/c bill is $10 a week during the winter, and $80 during the summer. A/C's are the worst power consumers.
My thermostat is showing how warm an cold it is when I turn it on it wont show the didgets to set it up to 74 heat what's wrong I put new batteries in it so help please
I changed my thermostat it still wouldn't work. Your 1st issue was the reason it was blank so cleaned it up got it on, but not it only works on fan auto will only last 5 minutes then the AC shuts off and wont go back on.
it's the battery connection - don't press them it too much, don't attach to the wall to hard....that's what I learned, after running around checking drain plugs, fuses, re-re-replacing batteries - it'd light up and show stats but then disappear...I'd get the screen to reappear and v.e.r.y. gently put it back on the wall.............. yes.
never mind. duh. but while I'm here again - my stat wasn't bad, but the battery connections were soooo sensitive. Batteries had to be set just so, and the stat just so on the wall.....
Mine goes blank in the spring and summer, and less often in the winter. When it does, the outside unit shuts off and the temp in the house climbs without me being aware. I have to unplug and replug the thermostat head unit, go in the garage and throw the heat breaker along with the a/c breaker, wait several minutes turn the breakers back on, and 5 minutes or so later the outside unit turns on and the house cools down (or heats up in the winter). I rent, and this house is an overpriced piece of junk. Its more trouble than its worth to call the property management company so I just grin and bear it.
Sir... I sincerely thank you! It's a cold Sunday morning in December. We woke up to no heat and a blank thermostat. Your video guided me to a simple solution: a pair of double A batteries. Thank you again!!!
You’re welcome!
Completely agree. Mine was a pair of AAA batteries. Happy Holidays Christmas 2024!
The float switch was exactly what caused our system to kick off. Thank you for mentioning it first!
Did you have to get a new one or drain the condensate pan
@@21toadian the drain line was clogged. I had to flush from inside and outside using a hose with a nozzle attached and bleach to loosen the clog. Just be careful inside around the electrical.
Thank you! The problem was the float switch. I opened it to pour in some ac build up remover. Was getting super frustrated and tried wiggling around and reinserting the tab for it and it worked.
Thank you, you just saved me and my family $$$, ended up being a little moisture in our drain line causing the switch to show water... drained it and we are good to go!!! Again, THANK YOU VERY MUCH!!!
Thank you. Thermostat was blank and when I went to replace the filter I tripped one of the sensors. You saved me a call.
It was my Braker!! Thank You soo much my dude!!! 💯
You're welcome!
Thank you!!! As soon as you mentioned float switch, I ran up to check my attic. Heard one unit running and the second one silent. Looked down and saw the pan was full. Liked and subscribed!
Same
You are the man! Tech installed the fitting for the t valve upside down. Pan empty but sensor full after 4 years of condensation. You saved me!
Awesome! Join us on our Tuesday night live shows!
Well done, concise video. Much appreciated. I rarely need anything on HVAC, but subscribed out of gratitude. Thanks.
Thank you!
Thank you, son, for this video. My thermostat is brand new (less than a week installed), and went blank. I know it is hard-wired, but I put batteries in it and it came back on, so at least for tonight it is working. I have a technician coming in the morning.
You saved my familys life, thank you so much.
Thanks for the video. 3am and i found the drains are just clogged. Good job man.
Good stuff Brudda. I love listening to true professionals
Thanks pal
To Johnny Law, The professionals know their stuff,
DIYers sometimes falter,
make mistakes,
cause havoc,
no license,
and liability up to their necks if negative circumstances arise.
Thank you for the video. My central air unit/furnace shut down like it should because my p-trap was completely clogged. I replaced the p-trap with an E-Z trap and the AC has been working great. The water is supposed to drain to the outside of the house, but I don't see any water coming out. I heard that there should be about 1 gallon of water draining every two days. I live in a fairly new single level house. There's no water leaking around the central air unit/furnace or in the rooms beside the furnace closet. Where's the water draining? Should I be concerned? Thank you.
Thanks for sharing your knowledge. My buddy called me this afternoon (only 95 today) to tell me that his thermostat screen was blank. Thanks to your video I was able to suggest that he check his Float Switch. Sure enough, all he had to do was give it a twist and his system is back online. His house was only up to 81 .... but it wouldn't have been a comfortable night's sleep.
My daughter just bought a house. The Carrier unit, when heat is on... will start making a random clicking noise. We noticed when it started clicking, the thermostat is blank. It's an old school thermostat. We have to flip it to off then back on to get the thermostat to wake up. Not sure what is going on with it.
I live in a condo and yeah the float switch jumped. your video saved my day, thanks man!
I got up for work, and my house was super hot like 85 with thermostat set at 73. So I checked, and my thermostat is blank and replaced the batteries and still blank, but the furnace was still going and blowing hot air... probably way hotter than it's ever blowed. So what would cause this as once I got to the basement the furnace stopped blowing
Same thing happened to me too I'm wondering the same
Man I just paid $10k in January to fix my heat pump and replace duct work after purchasing in November 2023. Money my thermostat went out and I dreaded calling because of the cost. I opened up the panels and realized there was still power going to the unit found your video today (Saturday) the weather has been really good didn’t really need heat or a/c the drain line was tilted up a little I pushed it down a little water came out went in the house and in 5 minutes the unit kicked back on
Thank you for the information. I got mine fixed with battery issues
Glad I could help
@@NewHVACGuide The new batteries should show some information on the thermostat's face, even when not connected to the other part of the plate.
Mine shows diddly (nothing). Why?
Thanks for the video. I wish I had seen your video first. Power was out to my Bryant Evolution Connex. I tried online recommendations and it said get a new one ($700-$1200 ish). I was stoked that I won one on auction for $400. Waited a week in a bedroom that was 82 degrees. Installed it once it arrived and it didn't work. A buddy of mine at a local HVAC company told me to check the low voltage wires. There was no power, then he said I need an electrician. I then stumbled across your video. My drain line was clogged. I don't know how it slipped my mind.....I guess the bill could've been worse (week and a half of sweating, and $400 for a new thermostat that I can't return).
400 USD for a thermostat?
I replaced the batteries in the thermostat in a fifth wheel im staying in but it's still blank. Heating works. Ac works (even auto) but it just shows blank.
Thank you. I followed the wire that's connected to and noticed the other end of the wire (located in the basement) is not connected to anything. What should I do?
Why not TELL US what to do about a faulty float switch???
Change it out or clean it.
Take out your float switch and flip it upside down. If the unit turns off when the float falls your switch isn’t bad. Your drain might be clogged
Float switch will ride up (float) if there is no drainage. Look for the condensate pipe. The float switch has wires coming to it. Blow out the pipe to get rid of the clog. Ensure drainage is good.
Thank you man. Leaned senser on roof all started but pump. There is TH4B - Luxaire unit have lead on the side, and black sensor underneath. I moved that sensor before I go on the roof, when cleaned come back, and put lid back, reset unit, and nothing.
Pump won't start
My thermostat is blank and I went out and bought a new one.And put it in and still stayed blank.But the furnace started and is working, but now it's getting too hot in the house.Because there's you don't know what temperature it is
I have that problem now I don’t know what to do 😢
Thermostat off but heat is sometime automatically on and off problem ? What I do please give me some tips 🙏🏼
I'd replace the thermostat. Screen may be inoperable
Will a broken prong be a reason why my thermostat is blank
Yes
Water drain line in attic froze ... water tank filled ... turned off Thermostat. Drained tank ... all OK. Thanx!
thank you so much! I came home to a Cold House.. I needed batteries as well!
You’re welcome!
Thank you so much. My thermostat was blank and because of this video, I went outside and lowered the drain hose ( I had moved it because it was attracting ants.) Within 5 minutes the thermostat came alive!
Awesome. Glad it helped!
What could it be when thermostat goes blank , unresponsive to tap. But screen comes on again each day when set time for AC to go on. Then screen black again until cycle on time starts again next day?
my thermostat did say low battery, there were batteries in there, i put NEW batteries in, screen is blank but air is flowing through the vents but not cold air…..????
Omg same thing is happening to me right now , how did you fixed it?
My heat was running fine a couple hours later my thermostat went blank. Ive never had batteries in my thermostat, so i put batteries in and the display of the thermostat came on put my heat or AC still would not kick on?? What is my issue???
Did you figure out the solution
Same for me. Did you get it figured out?
I have a Bryant evolution deluxe user interface which we can not reset any of the programs our model is systxbbuid01-c is it okay to replace with systxbbuid01-d my series is 19 and the replacement one in series 24 hoping its because of the newer models can not find the exact one I have , but their replacements look identical thank you for your help.
Excellent video....really informative......thanks so much!!!!
You’re welcome!
I just got a new ac unit outside in May a Lennox 15.2 seer 3 ton unit for a 1492 square ft home for $4000. I opted not to get the whole HVAC system done, so nothing done in the attic. My home was built in 2010, outside unit was replaced due to dead compressor. I noticed today on thermostat ( 2 months later) that screen was blank. I put batteries in it for the first time ever because I never had this problem. That still didn't work. My ac company now tells me it can be the float switch, I got a feeling their about to charge more thousands. Can this issue be because of faulty installation. What should I check for and asked them before they act like installer couldn't possibly did anything wrong. 11 years in my home and I've never had this problem.
If your thermostat goes blank 95% of the time your safety switch has been activated because your drain pan is getting clogged. Check your safety switch first if it’s clogged than your best bet is to get a shop vac and suck the drain line from the outside by your condenser unit while pouring hot water down your drain line from the inside unit to clear out any possible gunk
Our thermostat honeywell lyric is blank. When I changed the battery it displays a message says no power is coming check the circuit breaker. I checked the circuit breaker doesn't see any one tripped. Can you help us to see how we can fix this problem.
Thanks! My water drain was clogged, and it was tripping the float switch.
Tried all these and it wasn’t the diagnosis, finally had a pro come out (210$ Later) & the breaker flipped on the bottom right of my “ Air Handler/Furnace”(Not the breaker to the home). So check that also before spending. Pro was in my home for 15min🤦🏾
The question becomes, why wasit tripped? They don’t just trip for no reason. Let’s hope they don’t need to come back out.
Asked him that to. He just said it was really rare apparently. And again it was on my air handler not the home panel. Would love to figure out why it happened.
I have a serious question that no tech seems to be able to answer. What causes the compressor to make a rough sound when it kicks on? It seemed to stop at one point when it was recharged after i had a leak. But then it starting making that loud sound on start up again in just a few days. I live in FL and findging a good, honest tech that doesnt rip you off is hard.
Recharging refrigerant has done nothing unless the leak was repaired. That electric motor in that compressor needs vapor refrigerant to cool those windings. The mechanical portion in that compressor needs the oil for lubrication of the moving/mechanical parts, no matter what type of compressor.
When you have a leak & run low on gas, the compressor motor windings are not being cooled; along with losing refrigerant due to a leak, you are also losing oil that is needed for lubrication.
Adding gas without finding the leak is just buying time. That compressor is taking a beating.
Running a compressor with a leaker, especially w/no LPCO (Low Pressure Cut Out) means the compressor is having a rough go.
Good luck.
Amp draw numbers will tell you the health of the compressor
Thank you man, helped a ton
You’re welcome!
I have a Honeywell WiFi smart thermostat. Last night it kept shutting down and going dark every 15 minutes or so and then starting back up. Anyone else have that problem? I believe it to a model RTH9585WH.
I am now having this same issue. It appears to be rebooting itself. Have you found a resolution to this issue?
@earlkarp4142 any solution? Same issues
Another reason is the mouse chewing on the low voltage wires. I've seen it a lot.
I just realized there was a power outage for 3 hours in the middle of the night. That seems to be when it quit working. Break check in the morning. My a/c bill is $10 a week during the winter, and $80 during the summer. A/C's are the worst power consumers.
My thermostat is showing how warm an cold it is when I turn it on it wont show the didgets to set it up to 74 heat what's wrong I put new batteries in it so help please
Definitely sounds like something may be malfunctioning. Have a pro take a look or replace the thermostat entirely and properly.
In my case the Safe-T switch was the culprit. Thank you!
You’re welcome!
My thermostat goes blank most of the time, and comes back on occasionally. Any ideas on what to do?? Thanks
I replaced the batteries, same deal.
Mine is blank today? At least we’re not it needing heat in late summer. Did you end up fixing your issue?
Thank you so much. I will like and subscribe.
👍
You're welcome and thank you!
I changed my thermostat it still wouldn't work. Your 1st issue was the reason it was blank so cleaned it up got it on, but not it only works on fan auto will only last 5 minutes then the AC shuts off and wont go back on.
Might be time to call a pro.
Thank you!
You’re welcome
My circuit board blow out from the recent hurricane in Houston. It was located in my furnace box
Mise shew in the thermostat wires also cause this problem
Good info/ ty
You’re welcome ☺️
Thank you
You're welcome
Thank you! ❤❤
Good info
Thank you!
Thank you Sir!!!
What about an old Trane unit that is outside and ancient 😢
Oh no! The reasons explained in this video still could be valid.
Join us on Tuesday for our live show!
www.youtube.com/@hvacguideliveshow
Mine said I needed to change the batteries on it. I put brand new batteries in it and then the screen went blank, but lights up....?
Oh no! Maybe the stat is bad?
@@NewHVACGuide the what?
The thermostat (stat) may be malfunctioning
it's the battery connection - don't press them it too much, don't attach to the wall to hard....that's what I learned, after running around checking drain plugs, fuses, re-re-replacing batteries - it'd light up and show stats but then disappear...I'd get the screen to reappear and v.e.r.y. gently put it back on the wall.............. yes.
never mind. duh. but while I'm here again - my stat wasn't bad, but the battery connections were soooo sensitive. Batteries had to be set just so, and the stat just so on the wall.....
Neckties
Contracts
HIGH VOLTAGE ⚡
It went blank after i changed the batteries
Mine was a circuit board
Replacing batteries fixed my issue
Dont care. Smashed it. Buying a better new one. When im home, stuff needs to work when i finaly go to use it. Over it.
I have power to my thermostat and new batteries. Fan switch works, but no temp display or light. No ac.
Found out the problem? I have the same problem
My emergency switch was off 🤦
🙂
Our system has no batteries
Mine goes blank in the spring and summer, and less often in the winter. When it does, the outside unit shuts off and the temp in the house climbs without me being aware. I have to unplug and replug the thermostat head unit, go in the garage and throw the heat breaker along with the a/c breaker, wait several minutes turn the breakers back on, and 5 minutes or so later the outside unit turns on and the house cools down (or heats up in the winter). I rent, and this house is an overpriced piece of junk. Its more trouble than its worth to call the property management company so I just grin and bear it.
Put in new batteries heat still not on
Sounds like you may need to call a pro
I dropped the unit onto the ground and think it broke, it's now blank
This vid is BS….
For every problem call a pro call a pro that’s all his advice
Some things will need a pro to troubleshoot 🙂
BS? It just solved my problem in 2 minutes at 3am.
better blank than woke 😂
Kinda the same thing sometimes. Lol.
as usual 1 yr and the thermostats go, if we stop putting up with junk being made we might survive!