Furnace is a Goodman GMP-075-3 1998
A/C condensing unit is a Goodman 2 ton 10 SEER unit 1998
It is now the middle of a hot summer . The split system is cooling fine but a problem has just developed where the A/C and fan stays on regardless of the thermostat setting . I can only tun it off by placing the switch on thermostat in the off position (between heat and cool ) . I suspect that is probably a bad control board or thermostat . How do i diagnose this further (and repair) ? - Thanks
A/C condensing unit is a Goodman 2 ton 10 SEER unit 1998
It is now the middle of a hot summer . The split system is cooling fine but a problem has just developed where the A/C and fan stays on regardless of the thermostat setting . I can only tun it off by placing the switch on thermostat in the off position (between heat and cool ) . I suspect that is probably a bad control board or thermostat . How do i diagnose this further (and repair) ? - Thanks