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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My AC stopped working tonight. I have a Honeywell T8400C

Customer Question

My AC stopped working tonight. I have a Honeywell T8400C 1099 with no display.
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: First time
JA: Do you plan on doing the work yourself?
Customer: Yes
JA: Anything else we should know to help you best?
Customer: I've never done this before, but I'm mechanically inclined.
Submitted: 10 months ago.
Category: HVAC
Expert:  Webb-Guy replied 10 months ago.

Have you tried checking the batteries to see if they need replaced? Also try checking the breaker to see if that is the problem.

Expert:  Webb-Guy replied 10 months ago.

Are you still needing help with this?

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