Systems and techniques are described for using retrofit control of a ductless mini-split system (DMSS) to improve functionality and use in relation to temperature monitoring within a property. In some implementations, data indicating a command is transmitted to a controller associated with a ductless mini-split system. The command causes the controller to configure an operation to be performed by the ductless mini-split system. Power output associated with the ductless mini-split system is monitored based on transmitting data indicating the command. A determination that the operation has been performed by the ductless mini-split system is made based on monitoring the power output. Data indicating that the operation has been performed by the ductless mini-split system is provided for output.

A multi-split air conditioner and control method are provided. The multi-split air conditioner includes an outdoor unit including an oil separator and a four-way valve. The outdoor unit includes a pipeline connecting the oil separator and the four-way valve, and the pipeline includes a first pipeline and a second pipeline arranged in parallel, wherein the first pipeline is provided with a heat storage module and a heat storage module control valve, and the second pipeline is provided with a first control valve. When the outdoor environment temperature satisfies a certain condition, the first pipeline and the second pipeline are controlled, so that at least part of working medium circulates in the first pipeline between the oil separator and the four-way valve through the heat storage module.

A multi-split air conditioner and control method are provided. The multi-split air conditioner includes an outdoor unit including an oil separator and a four-way valve. The outdoor unit includes a pipeline connecting the oil separator and the four-way valve, and the pipeline includes a first pipeline and a second pipeline arranged in parallel, wherein the first pipeline is provided with a heat storage module and a heat storage module control valve, and the second pipeline is provided with a first control valve. When the outdoor environment temperature satisfies a certain condition, the first pipeline and the second pipeline are controlled, so that at least part of working medium circulates in the first pipeline between the oil separator and the four-way valve through the heat storage module.

A multi-split system and a method and device for adjusting an oil volume of a compressor of a multi-split system. The adjusting method comprises the following steps: recycling oil back to an oil storage tank by controlling a switch unit to turn on and an oil volume adjusting unit to turn off; when a continuous time over which the oil storage tank recycles oil reaches a first pre-set time (t1), controlling the switch unit to turn off and controlling a multi-split system to perform a test run; obtaining, according to a low-pressure piping pressure loss (P1) and a refrigerant flow (Q), a low-pressure piping pipe diameter (D) and a low-pressure refrigerant density (Den), an excess oil volume (Q2) that needs to be recycled, and obtaining, according to the excess oil volume and a maximum oil storage volume (Qz) of the oil storage tank, an oil volume to be expelled (Q3).

A multi-split system and a method and device for adjusting an oil volume of a compressor of a multi-split system. The adjusting method comprises the following steps: recycling oil back to an oil storage tank by controlling a switch unit to turn on and an oil volume adjusting unit to turn off; when a continuous time over which the oil storage tank recycles oil reaches a first pre-set time (t1), controlling the switch unit to turn off and controlling a multi-split system to perform a test run; obtaining, according to a low-pressure piping pressure loss (P1) and a refrigerant flow (Q), a low-pressure piping pipe diameter (D) and a low-pressure refrigerant density (Den), an excess oil volume (Q2) that needs to be recycled, and obtaining, according to the excess oil volume and a maximum oil storage volume (Qz) of the oil storage tank, an oil volume to be expelled (Q3).

An air conditioning unit that includes an interior unit, an exterior unit comprising a top face, a front face and a pair of opposing sidewalls, and a top cover.

An air-conditioning apparatus includes an outdoor unit and an indoor unit between which refrigerant is circulated. The indoor unit includes a body casing that forms an outer shell, a heat exchanger provided in the body casing, a drain pan provided below the heat exchanger, a water-level detecting unit that detects the level of condensate water that has flowed into the drain pan, and a refrigerant-gas detecting unit that is provided in the drain pan and at a higher level than the water-level detecting unit, and detects refrigerant gas that has leaked from the heat exchanger. The air-conditioning apparatus includes a controller that performs control to stop a cooling operation when the water-level detecting unit detects the condensate water that collects in the drain pan.

An air conditioner capable of satisfactorily preventing noise from entering an indoor space includes: an indoor unit that is fixed to a wall surface of an indoor space and houses an indoor heat exchanger; and an outdoor unit that houses an outdoor heat exchanger connected to a refrigerant circuit that includes the indoor heat exchanger. The outdoor unit includes an outside casing that is fitted into an opening formed in a building wall partitioning an outdoor space and the indoor space from each other and defines an internal space that is open to the outdoor space and isolated from the indoor space by being surrounded by a sound insulation wall, and an inside casing that is disposed in the internal space and houses the outdoor heat exchanger.

A climate control system coupled within an opening of a structure, with the opening separating an internal area within the structure and an exterior area external to the structure with the climate control system straddling the opening. The system consists essentially of: an interior unit disposed at the opening within the internal area; an exterior unit disposed at the opening in the exterior area; and a connector between the interior unit and the exterior unit that extends through the opening, the connector including: a circulation hose that extends through the opening to connect the exterior unit and the interior unit.

A climate control system coupled within an opening of a structure, with the opening separating an internal area within the structure and an exterior area external to the structure with the climate control system straddling the opening. The system consists essentially of: an interior unit disposed at the opening within the internal area; an exterior unit disposed at the opening in the exterior area; and a connector between the interior unit and the exterior unit that extends through the opening, the connector including: a circulation hose that extends through the opening to connect the exterior unit and the interior unit.