Honeywell Tstat - Going Blank then needing to be powered off and back on (2024)

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  1. 01-02-2019,10:02 PM #1

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (3)

    Honeywell Tstat - Going Blank then needing to be powered off and back on

    Stumped on the one, have a Honeywell tstat,
    about once a week it fails by going blank then comes back on but when 5 minute delay is up
    it goes blank again and keeps doing this until
    power is removed from air handler, once this is
    done it will come back on and work normal for
    a week or so, then do it again

    RC

  3. 01-02-2019,11:26 PM #2

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (8)
    What model stat, specifically?

    Any diagnosis done or is the above info all there is to go on?

    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

  4. 01-03-2019,05:15 AM #3

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (13)
    Did you try another T stat

  5. 01-03-2019,05:34 AM #4

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (17)
    Normally a blank Honeywell thermostat that resets and goes blank again, is a over loaded relay that is above the threshold. Or could be a failed thermostat. Need to get out your meter and start pullin amperages and ohm out devices in the circuit to see if it is being overloaded.

    That is all I can say in an open forum.

  6. Thermostat Model - RTH6580WF1001
    Have not tried another thermostat yet.
    American Standard A/H - no fault lights on the board (TAM4)
    Kill all power and turn back on and cycles back on normally, and
    works for a week or so, then the same thing happens again

  7. 01-03-2019,08:47 PM #6

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (27)
    last one I saw doing that, battery had leaked into tstat borad and damaged it. opened up tstat after replaced and saw the juices on board/ corrosion.

    Col 3:23

    questions asked, answers received, ignorance abated

  8. 01-04-2019,07:00 AM #7

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    Honeywell Tstat - Going Blank then needing to be powered off and back on (32)
    Thanks, this particular one does not have a battery, it has been reset and it currently working, but in a few days it will fail again and need resetting. Going back over there next week to do some more checks. By the way after it fails you can select emergency heat or fan only and it will work, it is only failing on a call for the heat pump, but once it has been powered off and back on it works fine for a few days.

  9. 01-04-2019,07:46 AM #8

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (36)
    I had something similar with a Honeywell "VisionPro 8000" going on.

    I may/ may not have found the problem, due to Issues with the Service Panel, that popped up.

    One side of the Main Breaker Failed, thereby stopping the 240V, so I installed a New Service Panel. So far, ... The "Demons" in this T-stat have not returned.

    Could Fluctuations in the supply voltage be contributing to your problem with this Stat Randy?

    Hos 4:6 My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you, that you may be no priest to me. Because you have forgotten your God’s law, I will also forget your children.

    "You've got to Stand for Something or You'll fall for anything" (A. Tippin)

    Mat_15:24 But he answered, “I wasn’t sent to anyone but the lost sheep of the house of Israel.”

  10. 01-04-2019,09:58 AM #9

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (40)
    Is this using power robbing technology?

  11. 01-04-2019,04:05 PM #10

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (44)
    Had a situation similar to this that was caused by moisture inside jacket of thermostat wire. Replaced wire a problem disappeared.

  12. 01-04-2019,05:01 PM #11

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (49)
    It's a retail wifi stat, by model number.

    Furnace may not, since no codes, be the issue. There could be a number of things outside the furnace causing it.

    Could it be a wifi connection issue?

    Could it be an external safety?

    Issue in the heat pump?

    Too many things to guess at without more info.

    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

  13. 01-04-2019,06:27 PM #12

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (53)
    Honeywell Tstat - Going Blank then needing to be powered off and back on (54)
    It is not, it has a common wire

    Thanks

  14. 01-04-2019,08:56 PM #13

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    Honeywell Tstat - Going Blank then needing to be powered off and back on (60) Originally Posted by randy1txHoneywell Tstat - Going Blank then needing to be powered off and back on (61)

    It is not, it has a common wire

    Thanks

    Not to argue, and I assume this was to dispute it being a retail model, but it IS per mfr(Honeywell). Anything with an "R" as the beginning of the model number is a DIY/non-professional model. They will not have the same warranty or features/set up capabilities as a professional model of the same type.

    "C" wire is used with WiFi models. Otherwise no "C" wire.

    https://www.honeywellhome.com/en/pro...ostats#f:type=[Wi-Fi]&f:installation=[DIY]

    https://www.honeywellhome.com/en/pro...ostats#f:type=[Wi-Fi]&f:installation=[Professional]

    Note the check box on the lower left in these 2 links!!

    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

  15. 01-04-2019,09:58 PM #14

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    Post Likes Honeywell Tstat - Going Blank then needing to be powered off and back on (65)
    Honeywell Tstat - Going Blank then needing to be powered off and back on (66)
    Agree, I was aware of this being a DIY tstat. I may try a “real” one before doing anything else.

    Thanks

  16. 01-04-2019,11:44 PM #15

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    Honeywell Tstat - Going Blank then needing to be powered off and back on (72) Originally Posted by randy1txHoneywell Tstat - Going Blank then needing to be powered off and back on (73)

    Agree, I was aware of this being a DIY tstat. I may try a “real” one before doing anything else.

    Thanks

    While it may be a stat, I would focus on other things. Unfortunately that means catching it in failure mode.

    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

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Honeywell Tstat - Going Blank then needing to be powered off and back on (2024)

FAQs

Why does my Honeywell thermostat keep going blank? ›

Display is Blank

If the screen is clear on your programmable thermostat, you may need to install new batteries. If that doesn't solve the trouble or you use a smart thermostat, there may be a wiring problem. Next, you should ensure the power is enabled for your furnace or air handler.

Learn More Now ›
How do you know when your Honeywell thermostat is going bad? ›

A bad thermostat can be detected when your AC or furnace is not turning on, your HVAC systems are not turning off, the thermostat not responding, your HVAC system is short-cycling, the room temperature not matching the temperature displayed on the thermostat, and the programmed setting resetting themselves.

See More ›
Why does the power to my thermostat keep going out? ›

Overloaded Circuit Breaker

Like everything in your home that runs on electricity, the thermostat is connected to a switch in your home's circuit breaker. The system will automatically shut down if the circuit supplying electricity to your thermostat gets overloaded. The circuit will flip to the Off position.

Discover More Details ›
Why does my thermostat keep going black? ›

Thermostat Batteries Died and Need to be Replaced

If your thermostat is blank, the first thing you should do is check the batteries. Chances are, the batteries have died and the thermostat simply can't power on. Replace the batteries and see if your thermostat turns on.

Explore More ›
Why won t my honeywell thermostat stay on? ›

Check the Power Source: Ensure your thermostat is receiving power. Replace batteries if your model requires them or check the circuit breaker if it's hardwired. Inspect the Wiring: Over time, wiring can degrade. Inspect for any loose connections or signs of wear.

Find Out More ›
Why does my Honeywell thermostat keep turning off? ›

It's recommended to check your thermostat's batteries, clean the contacts, and check the wiring. If the problem persists, it may be necessary to contact a professional HVAC technician to diagnose and repair any issues with the HVAC system or to check compatibility issues.

Find Out More ›
What is the life expectancy of a Honeywell thermostat? ›

As with any system, eventually, your thermostat will become outdated. Modern home thermostats tend to have about a 10-year lifespan but are usually replaced sooner due to innovations in the market.

Read On ›
What is the symptoms of a bad or failing thermostat? ›

Watch for These 9 Signs of a Thermostat Going Bad
  • The screen is dead. ...
  • The actual temperature doesn't match the display. ...
  • Your AC or heater is stuck on. ...
  • Your heating and cooling won't turn on. ...
  • Your HVAC is short cycling. ...
  • Scheduled settings stop working. ...
  • Nothing happens when you adjust the settings. ...
  • Temperatures shift.
Aug 9, 2023

Learn More ›
How do I know if I need a new Honeywell thermostat? ›

Your Thermostat Gives Faulty Readings

If you suspect that your HVAC system is giving faulty temperature readings, then you can use an indoor thermometer to determine the current temperature. If it doesn't match what your thermostat says, then it may be time to replace your thermostat.

Explore More ›
How do I check if my thermostat is getting power? ›

You can determine if the wiring is defective by turning the fan from the “Auto” setting to the “On” setting. The blower should start, which means your thermostat is getting power. Or, if the AC is on, turn the temperature down; if the furnace is on, turn the temperature up.

Continue Reading ›

Why does my thermostat keep kicking off? ›

The wiring could be old and need replacing, it might need new batteries, or it could be the location of your thermostat. If your thermostat is placed close to a heat source such as direct sunlight or a heat register, it will skew the temperature reading causing the thermostat to turn on and off irregularly.

Find Out More ›
Why is my thermostat going in and out? ›

Problem: Old Batteries

Most newer programmable thermostats connect to your home's electrical or HVAC system for power. Solution: Switch out your batteries. It can be as simple as switching out the batteries on your thermostat device. This could also be the reason your screen can go blank sometimes.

View More ›
Why would my Honeywell thermostat go blank? ›

A thermostat with batteries it's like any device with batteries. If the display is blank, I do the batteries are bad, or the thermostat is bad. This is what you will do. Try different sets of batteries from different packs.

Read On ›
How to fix a blank thermostat? ›

If your thermostat is battery-powered, the first step is to check if the batteries have run out. Replace them with fresh ones and observe if the screen comes back to life. In the case of a wired thermostat, a tripped circuit breaker or a blown fuse in your home's electrical system could be the cause.

See More ›
How do you reset a Honeywell thermostat? ›

Resetting a Honeywell Thermostat
  1. Power off the thermostat and remove the batteries.
  2. Put the batteries in the wrong way, with negative to positive and positive to negative.
  3. Wait ten seconds and put them back in the correct way.
  4. Your thermostat will be reset to factory settings.

Learn More Now ›
How do you fix a blank screen on a thermostat? ›

Common Troubleshooting Tips for a Blank Smart Thermostat
  1. Double-check to Ensure the Thermostat Is On. ...
  2. Inspect the Thermostat Batteries. ...
  3. Take a Look at the Screen Display Brightness Level. ...
  4. Check for a Circuit Breaker Trip. ...
  5. Check for a Tripped High-Limit Switch. ...
  6. Do Some Screen Cleaning. ...
  7. Look for Wiring Problems.
Apr 15, 2022

Get More Info Here ›
Why is my thermostat blank after changing batteries? ›

If the display is blank, either the thermostat or the batteries are bad. You will try different sets of batteries. Make sure they are inserted properly. Sometimes, the indicators for battery placement is wrong on certain thermostats.

Discover More ›
What happens when a Honeywell thermostat battery dies? ›

When low batteries eventually die, you'll see a black display screen, the thermostat will stop working and your heating or cooling units won't function. The heating and cooling system cannot respond to nonexistent temperature commands.

Learn More ›
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