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Joy Grover Posted on Jan 03, 2019
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My Honeywell ProSeries thermastat has a triangle with an exclamation mark inside of it on the screen by the temperature in the house. What is this alert and how do I clear it?

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brian williams

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  • Master 1,980 Answers
  • Posted on Oct 25, 2021
brian williams
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Usually the case is a low battery but might be filter also... Replace both

Linda Fugget

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  • Posted on Oct 24, 2021
Linda Fugget
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In my case it has to do with the replace air filter alert. I replaced the air filter but it was still on the display so I reset the thermostat by reversing the batteries for 5 seconds and going through setup when it came to the air filter reminder I selected the 1 that meant I wanted a reminder. when I went back to the home screen the triangle with the exclamation in it was gone. After much research on how to get rid of it on the display it was a simple fix. Hope this helps somebody.

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  • Contributor 18 Answers
  • Posted on Jan 04, 2019
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Replace the battery. The Triangle and exclamation point mean the battery is in need of replacement.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Dec 12, 2008

SOURCE: flashing orange light with exclamation mark

Just talked to a mate of mine who said its the ASC that has been turned off. I flicked the ASC switch and problem solved.

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ElDopa

ElDopa

  • 295 Answers
  • Posted on Feb 07, 2009

SOURCE: SEAT TOLEDO WARNING LIGHTS

Could be the motor-management-warning light, but I guess it's the break-warning light. There might be too little breaking-fluid left in the lines ... A boardcomputer-readout should clarify this.

Otherwise, try parking on an ascending road with the nose pointing up, hit the hand-break and wait like 2 minutes; the light should come on. You might wanna retry it with the car's nose pointing downwards as well ... If so, definitely the breaking-fluid, otherwise probably not ;)

In any case - flashing warning light are never ok, so when you see it again and you're sure it's not just the ABS/ESP warning light, go and have your boardcomputer read-out, since it should contain useful errorcodes ..

Anonymous

  • 65 Answers
  • Posted on Feb 12, 2009

SOURCE: Warning light on dash - need to know what it means

if it look like this http://www.postimage.org/Pq8RFN0.jpg its the esp light it means you have a fault relating to that system.you need to get a diagnostic check done,there is nothing you can do i,m afraid its a dealer or specialist job.

Anonymous

  • 2050 Answers
  • Posted on Sep 18, 2010

SOURCE: a symbol showing a triangle

Tire pressure, check them all.

Anonymous

  • 1874 Answers
  • Posted on Jan 22, 2011

SOURCE: Warning light on: Yellow circle

It's the ASR - Acceleration Skid Control system warning light!
For today's typical high-torque engines, traction control (ASR) can increase both comfort and safety, particularly when driving on slippery roads or surfaces offering differing levels of grip. Traction control permits smooth starting and acceleration through the full speed range without wheel-spin or fishtailing.

tdisline_169.jpg


ASR only operates in conjunction with the electronic accelerator (E-gas) and uses components of the anti-lock braking system (ABS). If one wheel suddenly begins to rotate faster than the others (slip), ASR intervenes in the engine management system and reduces power until the wheel stops spinning.
The ASR system represents a further contribution to active safety as it maintains vehicle traction and directional stability throughout the acceleration phase at any speed. In addition, it reduces tyre wear. Activation of the ASR system is indicated by a flashing indicator lamp in the instrument cluster.
The ESP system means the Electronic Stability Program. If the ESP lights on the dashboard permanently the ESP system is faulty. You must access the ESP Electronic Control Unit (ECU) memory for pull out all DTC (Diagnostic Trouble Codes), using diagnostic equipment connected to the data link connector of the car. Then you will be full informed about bad pieces (e.g.: front right wheel abs sensor interrupted, ...). After bad pieces replacement you will be able to erase all faults memored by ESP ECU, in other words reset the ESP system and turn off the warning lamp on dashboard.


Please do rate my response. Thnaks!

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Related Questions:

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What is the warning with a Triangle and exclamation mark inside it

It means "something is wrong". You need to check the messages to find out.
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Triangle w/exclamation troulbeshoot

Battery could have been damaged by temperature extreme or the process of charging it while still frozen. I would have allowed it to reach room temperature before putting it into a charger.
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I have a light on my dash with an exclamation point enclosed in what looks like parenthesis with verticle lines underneath. It's yellow. Do you know what it is?

If it looks like a deflating tire with an exclamation mark inside, its the check your tire pressure light.

If its a triangle with exclamation mark inside its the check engine light.
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2008 RS 125: red triangle warning light with exclamation mark i...

This website can help you www.rsgoldfast.com
They serve good high efficiency, safe and convenient transaction, you can go to experience
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Thermostate temperature setting wrong

Are you saying that the temperature over-shoots it's setting by 5 degrees? If so and if the thermostat has an inticipator device in it you can adjust it. After removing the cover on the thermostat, look for a little brass triangle on the lower right hand side. There will be a scale with numbers on it and they are very hard to see. This device heats up prior to shutting off the thermostat so it will not over-shoot by more than a few degrees. Move the brass triangle either up or down and let the heater cycle a few times. If the temperature swing gets worse, go the other way next time.

If the thermostat is not heat inticipated, there will be a small "Dip" switch where you can adjust to a specific degree of under-shoot.

Visit the Honeywell website and you can pull up the installation/owners manual for your model. www.honeywell.com
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