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MY thermostat screen is blank and the unit is not working. I
MY thermostat screen is blank and the unit is not working. I changed the batteries. No difference. I do not have the manual booklet that came with the unit. Can you help me trouble shoot to find the p… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
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My honeywell thermostat screen is blank so the AC doesn't
my honeywell thermostat screen is blank so the AC doesn't work. How can I reset the thermostat? I've changed the batteries and checked the breakers...nothing works and it's hot! … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
9,999 satisfied customers
I have a Lennox thermostat and the screen has gone blank.
I have a Lennox thermostat and the screen has gone blank. Does this … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,884 satisfied customers
My thermastat is blank I have reset my circuit breakers
My thermastat is blank I have reset my circuit breakers although they were not tripped , taken it off wall and replaced , still no reading … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
7,807 satisfied customers
No ac. found the thermostat screen was blank. Tried
no ac. found the thermostat screen was blank. Tried inserting batteries. The screen came on, but still no ac. checked voltge coming into the thermostat. no 24vdc there. went upstairs where the wire go… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
I have a carrier kfceh3101c15 furnace and a Carrier programmable
I have a carrier kfceh3101c15 furnace and a Carrier programmable thermostat. The thermostat screen is blank, with no apparent power to it. I flipped the breakers at the electrical panel and the breake… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,884 satisfied customers
The LCD of my honeywell thermostat chronotherm iv plus goes
The LCD of my honeywell thermostat chronotherm iv plus goes blank. I removed the panel and found no battery. The model is T860002028. What should I do? Thank you!… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,884 satisfied customers
i have a AC with robertshaw 300 series thermometer. the ac
i have a AC with robertshaw 300 series thermometer. the ac stopped and the screen said AC for power failure, so i reset the circuit breaker. but the ac is still off and the thermometer screen is blank… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
we have a honeywell T8411R 1002 (2) thermostat and we tried
we have a honeywell T8411R 1002 (2) thermostat and we tried to turn on the heat but it would not turn on. when we first looked at the thermostat it was blank, we pulled it out from it's housing and pl… read more
Tom
Tom
HVAC Technician
Vocational, Technical or Trade Scho
770 satisfied customers
I have purchased an RTH2300 thermostat. I wired it accordingly
I have purchased an RTH2300 thermostat. I wired it accordingly and installed fresh batteries. The screen is blank. The fan will run with the "on" setting. What have I done wrong? Sal… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
My Carrier 38DXA185913 air conditioner has shut down and I
My Carrier 38DXA185913 air conditioner has shut down and I cannot find the cause. The programmable thermostat (no markings as to which type) LCD has gone blank, so no error codes available to help wit… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
9,999 satisfied customers
I have a honeywell thermostat that turns off automatically
I have a honeywell thermostat that turns off automatically prior to reaching the desired temp. I've flipped all breakers in and outside the house. That did not work. I removed the batteries, thermosta… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
My Carrier Programmable Digital Thermostat (53DFS250-FS)s
My Carrier Programmable Digital Thermostat (53DFS250-FS)'s LCD goes blank once the air conditioner kicks on. What causes this?… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,362 satisfied customers
I have a Lennox Merit series 10A CC. This afternoon I noticed
I have a Lennox Merit series 10A CC. This afternoon I noticed that the Honeywell T8400C thermostat had gone blank. I switched with another T8400C but still no go -- that one was blank, too (When I put… read more
Rick Mather
Rick Mather
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Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a Honeywell T8775C1005 White Digital Round 24V Digital
I have a Honeywell T8775C1005 White Digital Round 24V Digital Round Thermostat and the display went blank recently. I know that it is not battery powered and I have no blown fuses. Where should I look… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,362 satisfied customers
My honeywell TH8000 Thermostat is completely blank and the
My honeywell TH8000 Thermostat is completely blank and the system has shut off. I pulled the thermostat and replaced the batteries, but it is still blank screen. Any ideas?… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,884 satisfied customers
i own a honeywell thermostat and it just quit working al at
i own a honeywell thermostat and it just quit working al at once . I checked the breakers and there ok and on but the digital thermostat is not working… read more
Kenton Guidry
Kenton Guidry
HVAC Technician
Vocational, Technical or Trade Scho
963 satisfied customers
The display is blank on Honeywell T8001C and ac unit not operating.
The display is blank on Honeywell T8001C and ac unit not operating. AC repair company asks me to check battery; however manual does not say location. Where is the battery? Thanks… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
13,884 satisfied customers
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Meet the Experts:

Phil

Phil

Mechanical Engineer

9,999 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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