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when i turn the heat selector on the ac runs also whats going on here?
3 Answers
tennisshoes answered 3 years ago
The system is trying to maintain the 76 degrees you have it set at, so the A/C will cycle on and off. If you set the heat to max heat that should shut off the A/C compressor.
Js08016 answered 3 years ago
On an automatic climate control system, even from the '60s, the A/C compressor will run any time the outside temperature is about 35°F or higher. This is normal. The system does this to keep humidity levels down inside the car so your windows won't fog up in cool damp weather. HTH. -Jim
Sparky222 answered 3 years ago
Thunderbird ATC systems lacked the economy/vent option until 71-2 and the 6th generation. This was the only way to deactivate the compressor above freezing ambient temps. In all other active settings the cabin sensors would cycle the compressor intermittently.
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