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n23ic
Jan 28, 2008, 06:16 PM
I have central Heat and air and my air works just fine but when I turn the heat on it works just fine also but it will not shut off unless I shut the switch off at the thermostat and it is digital is that my thermostat?
hvac1000
Jan 28, 2008, 06:30 PM
Crossed wire.
Thermostat wiring has shorted.
Thermostat defective.


If replacing by a good quality Honeywell or White Rodgers.
therinnaiguy
Jan 29, 2008, 04:47 AM
Could be a sticking heat relay at the furnace?