2013 Carrier/R22 2018 Goodman Customer stated that outdoor unit was coming on and off. Checked system and found it had been in defrost. Customer was unfamiliar with heat pumps, explained defrost cycle. Checked pressures, amp draw and capacitor. System is R22 but in good working order at this time. No other issues found with system. Customer signing up for Silver membership. There is a guest house with another system.