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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 a 90i heater, a Goodman GSC140481AE AC, and LUX

Customer Question

I have a Bryant 90i heater, a Goodman GSC140481AE AC, and LUX PNP511 thermostats. Although the system worked last year, when I use the thermostats now, the heater and AC only go on briefly and then shut off and that repeats, whereas they used to come on and stay on. Please help.
Submitted: 10 months ago.
Category: HVAC
Expert:  airheatman replied 10 months ago.

Have you tried replacing the batteries?