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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8326
Experience:  Furnace, A/C and heat pump specialist.
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On my comfortlink ii thermostat, error 26 lights up when

Customer Question

On my comfortlink ii thermostat, error 26 lights up when furance is on for awhile. What does that mean?
Submitted: 11 months ago.
Category: HVAC
Expert:  airheatman replied 11 months ago.

The error 26 is a high temp code. It indicates an over temperature limit in furnace is shutting unit off.

Usually caused by dirty filter, fan not coming on or moving enough air or a restriction in airflow such as a dirty ac coil.