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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have two error codes on my Rheem Thermostat. A026_F and

Customer Question

I have two error codes on my Rheem Thermostat. A026_F and A058_F. I'm not sure what either means. I have Rheem AC, hot water heater and HVAC. I also have my humidifier hooked up to the thermostat.
Submitted: 1 year ago.
Category: HVAC
Expert:  Phil replied 1 year ago.

Hello, welcome to Just Answer.

I need the full model number of the Rheem furnace/ air handler... it is inside the furnace near the gas valve if you have a gas fired furnace.. on a tag that shows the BTU rating, serial number and model number.

Meantime tell me if the system works or not. We can go from there.

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