Patent ID: 11946671
Assignee: nan
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. A heat pump type air conditioning system control method comprising:
sending a conventional AC voltage output toggling on and off on one wire to outdoor main controller; and
responding by the outdoor main controller from power-off to determine if the system needs to run in cooling mode or heating mode; and
processing the cooling and heating instruction at the outdoor main controller; and sending an instruction for cooling or heating to a driver; and
determining conditions at the outdoor main controller, from historic data on ambient temperature, system operation commands received by the system, timing data; and
interpreting cooling and heating instruction whenever the outdoor unit is powered up; and
determining from power-off if the system has run in cooling mode, and that the cooling mode was previously run before the power was cut, and whether the outdoor ambient temperature T′ recorded before the power-off is within a threshold A from the current outdoor ambient temperature T, and when −A<(T−T′) is satisfied, sending an instruction for cooling to the driver, or sending an instruction for heating when the conditions are not met.