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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Honeywell rth9580 screen has gone blank, woke up this am and

Customer Question

honeywell rth9580 screen has gone blank
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: woke up this am and scree is blank
JA: Do you plan on doing the work yourself?
Customer: I will try
JA: Anything else we should know to help you best?
Customer: none at present
Submitted: 9 months ago.
Category: HVAC
Expert:  Phil replied 9 months ago.

Hello, for future reference CLICK HERE, that should be the manual for the thermostat...However I do need the last 4 numbers of the model number to be sure.

The thermostat gets power from the furnace/ air handler... if the breaker to that that is off, then there will be no power to the thermostat... also... if the 24volt control circuit fuse or transformer blows you will have no power to the thermostat.

Tell me a lot about your technical skills and if you have a multi meter or not so I can coach you most appropriately on doing a few tests... we can go from there

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