Carrier Edge Thermostat

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Old 09-22-2017, 11:42 PM
gummybear223 gummybear223 is offline
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Default Carrier Edge Thermostat

Does anyone know if the Carrier Edge thermostat has a battery for the display? The display was normal earlier today, then when I went to turn down the temperature, it is blank with no backlight. The on-line manual does not mention a battery or explain how to get the panel off the wall and I don't want to yank it off and end up breaking it. I really don't want to have to wait until Monday to go through warranty department if I can just change a stupid battery myself. (and yes, the circuit breakers for the AC are on!)
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Old 09-23-2017, 07:03 AM
retiredguy123 retiredguy123 is online now
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Have you tried adjusting the backlight level as described on page 38 of the manual? I don't think the thermostat has a battery.
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Old 09-23-2017, 07:26 AM
gummybear223 gummybear223 is offline
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There is no display, period----pushing any buttons has no effect. I woke up during the night and saw that it was on again so I was able to adjust the temperature down, but this morning it is back to blank! It is a three-year-old house that I just bought two months ago. It was fine up 'til now.
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Old 09-23-2017, 10:35 AM
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It sounds like you may need a new thermostat, but, at least the part should be covered under warranty.
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Old 09-23-2017, 03:52 PM
gummybear223 gummybear223 is offline
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It looks like that will be the case. It came to life again earlier in the day but is dead now!
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Old 09-23-2017, 03:59 PM
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asianthree asianthree is offline
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Quote:
Originally Posted by gummybear223 View Post
It looks like that will be the case. It came to life again earlier in the day but is dead now!
Look at it this way now you can get a thermostat that you can connect to your phone and make changes whenever you want. There needs to be a bright side sometimes.
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Old 09-26-2017, 09:18 PM
gummybear223 gummybear223 is offline
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in case anyone does a search, here's the culprit: clogged drain pipe! When I called Munn's and they were scheduling a warranty service call, I described the problem, including that it seemed like it was on for 6 hours, and then shut off for 4 or so. He said to fix it, take off the cap for the pipe that's by the air handler, then go outside and put suction on the pipe with a shopvac. I did that and got a "whoosh" of over a gallon. When the water sits in the pan, a float will trip the safety shutoff switch and turn the system off to keep from flooding your house, garage, whatever. With the system off, the water slowly drains and the system resumes normal operation.
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Old 09-27-2017, 03:29 AM
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I really don't see how that aliens to your thermostat, maybe I'm missing something
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Old 09-27-2017, 06:01 AM
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aninjamom aninjamom is offline
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We just had a Lennox installed, but the 21st century thermostat they put in has a touch screen, and goes to "sleep" just like a computer monitor. It goes black until you touch it. Yours might be the same way?
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Old 09-27-2017, 11:28 AM
Wiotte Wiotte is offline
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Default Carrier Edge Thermostat

The carrier installer can wire the overflow float switch several ways. One way is to break the secondary hot on the control transformer. This will kill the thermostat. Another is to break the Y leg going to the outside condenser. This will kill the compressor but leave the thermostat live.
Breaking the transformer hot is preferable as long as the operator knows that a blank thermostat means it’s time to check the overflow.


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battery, edge, carrier, thermostat, display


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