SOURCE: 20 year old central a/c heater not working
Check your thermostat and mode selector setting, thermostat setting should be set at warmer and mode selector setting should be at low heat or hight this is applicable for manual unit.
If it is a remote control just set the remote to heat mode.
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SOURCE: My goodman cple18-1c model central
Ths sounds like the outside unit or compressor is not kicking in, check for power to the unit at the breaker box, or at the bottom of the contacts!
SOURCE: amps needed to run a central air unit
Central air requires a 2 pole 30 amp breaker or fuse. You may be able to get by without it but 200 amp service is recommended.
SOURCE: no heat coming from central air unit when heat is turned on.
check t stat make sure its set up for you system some stats have to be set up for a heatpump or iits gas or electric heat
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