i have a 7 year old carrier heat pump. tonight was the first night cold enough to turn heater on (about 40 outside). by chance, i happened to be near the outdoor unit when it came on. it turned on and fan spun for about 10 seconds then shut off for 5 seconds then back on, etc. i then turned thermostat way down and attempted to get it to output cold air instead of heat. this worked fine, the unit outside turned on and stayed on, no problems at all. i then retested heat mode and it once again started short cycling.
any ideas?
any ideas?