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T8411r1127 digital thermostat for my a/c just quit- no read out or display we checked for a battery and did not see on

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Digital carrier thermostat reading P- on display. Any idea what this means


Some thermostats run on their own batteries, but some need power from the furnace to display, check this first. "P" may mean power.

Nov 22, 2016 | Carrier Heating & Cooling

1 Answer

Digital thermostat has no display


Hello, first if the thermostat uses a battery check it to make sure it is working, if the thermostat does not use a battery itncould be a bad transformer or blown fuse on the circuit board.

Jul 09, 2011 | Heating & Cooling

1 Answer

I had a problem with the lock remote control. Please help me how to unlock the remote.


  1. 1
Remove the thermostatfrom its base and replace the batteries. To remove the thermostat, grasp it atthe edges and pull toward you. The batteries are on the back of the thermostathousing. If this doesn't unlock the touch screen, continue to the next step.
  1. 2
Check that the furnace'sfuse is not blown or that the circuit breaker is not tripped. Replace a blownfuse or reset a tripped circuit breaker, and try the thermostat again.
  1. 3
Press the"Screen" button on the touch screen, then wait for 30 seconds andpress "Done." In many cases, this will unlock the screen and thethermostat will be ready for normal use.
  1. 4
Wait five minutes for thecompressor timer to reset if "Wait" is displayed on the screen. Thenoperate the system normally.

Read more: How do I Unlock the Digital Display on a HoneywellRTH8500 Thermostat? ' eHow.com http://www.ehow.com/how_7267447_do-display-honeywell-rth8500-thermostat_.html#ixzz17KUJvAB9

Jan 12, 2011 | Haier Heating & Cooling

1 Answer

ITS LOCKED AT 75 DEGREES AND DONT KNOW HOW TO UNLOCK


Remove the thermostatfrom its base and replace the batteries. To remove the thermostat, grasp it atthe edges and pull toward you. The batteries are on the back of the thermostathousing. If this doesn't unlock the touch screen, continue to the next step. Check that the furnace'sfuse is not blown or that the circuit breaker is not tripped. Replace a blownfuse or reset a tripped circuit breaker, and try the thermostat again. Press the"Screen" button on the touch screen, then wait for 30 seconds andpress "Done." In many cases, this will unlock the screen and thethermostat will be ready for normal use. Wait five minutes for thecompressor timer to reset if "Wait" is displayed on the screen. Thenoperate the system normally.

Read more: How do I Unlock the Digital Display on a HoneywellRTH8500 Thermostat? ' eHow.com http://www.ehow.com/how_7267447_do-display-honeywell-rth8500-thermostat_.html#ixzz17KUJvAB9

Jan 04, 2011 | Heating & Cooling

1 Answer

How can I unlock this th


Remove the thermostat from its base and replace the batteries. To remove the thermostat, grasp it at the edges and pull toward you. The batteries are on the back of the thermostat housing.

Read more: How do I Unlock the Digital Display on a Honeywell RTH8500 Thermostat? ' eHow.com http://www.ehow.com/how_7267447_do-display-honeywell-rth8500-thermostat_.html#ixzz17KTxLwBU

Dec 05, 2010 | Honeywell Heating & Cooling

1 Answer

No power to white rogers thermostat


Hi,
Either you blew the fuse on the air handler control board or you burnt out the air handler transformer.
The thing that blew the fuse is probably the contactor in the condenser unit. You will need to check out out cause of the outage before replacing the fuse or transformer.

heatman101

Apr 08, 2010 | Carrier 38CKC036 Air Conditioner

1 Answer

Thermostat is making a clicking sound, eveything on display is lit up.


If the thermostat has a display and making a clicking sound, that sounds like the thermostat is working.

If your thermostat has batteries, then its most likely your batteries that are keeping the display lit.

You can try removing and replacing the batteries first. Also, check all your breakers. If these two steps fail and the system is not functioning, then you have a problem somewhere.

Jan 17, 2010 | Heating & Cooling

1 Answer

The digital display is not functioning


the thermostat could be bad. It may have gone bad on its own or due to a short in the supply wiring. Sometimes mice will chew on the wiring in the wall that leads to the thermostat. But I wouls change the thermostat. They do go bad. Make sure you turn the inside unit off first in case you accidently touch wires together. This will blow the transformer inside the unit if the fuse doesn't blow first. I even scene thermostats with fuses inside. So you may want to take the thermostat apart and check for inside fuse also.

Jun 18, 2009 | Honeywell Heating & Cooling

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