Carrier MRA120741-2027 Compressor Overload 322056-301 counter-clockwise to decrease) to match

counter-clockwise to decrease) to match the required system inches of water column

The Lennox Y4152 HSI Kit is a field-proven integrated furnace control board upgrade designed for technical precision in two-stage heating systems

making it the standard choice for McQuay thin-line fan coils and unit ventilators where space and acoustic performance are critical

It allows technicians to route the wires safely through factory grommets and reach the control board without the need for splicing or wire extensions

Maintaining clean

Carrier MRA120741-2027 Compressor Overload 322056-301 counter-clockwise to decrease) to matchThe Carrier MRA120741 2027 Compressor Overload is an essential OEM replacement part engineered for high precision thermal and electrical protection in residential and commercial refrigeration systems. Designed specifically for Carrier heat pumps and air conditioning units, this internal compressor overload functions as a critical safety switch, interrupting the electrical circuit to the common winding when it detects a locked rotor current or an over