Haier 1U12AP2VHA User Manual

OUTDOOR UNIT CONTROLS & COMPONENTS
PAGE 11
ENGLISH
Discharge Temperature Sensor
Defrost Temperature Sensor
The Defrost Temperature Sensor is a negative coecient
thermistor that will change resistance in response to outdoor
coil temperature changes. The Main Control Board monitors
the temperature of the outdoor coil to determine when the
system is needing to perform a defrost cycle. The sensor also
monitors outdoor coil temperature during defrost cycles to
determine termination conditions.
This sensor connects to the Main Control Board at PLUG
CN-19.
The Discharge Temperature Sensor is a Negative Coecient
thermistor that senses the temperature of the compressor
hot gas. The Main Control Board monitors the temperature of
the compressor hot gas and will make inverter speed changes
in response to input from this device.
This sensor connects to the Main Control Board at PLUG
CN-17.
Outdoor Ambient Temperature Sensor
Suction Line Temperature Sensor
The Suction Line Temperature Sensor is a negative
coecient thermistor that senses the temperature of
the suction line. The Main Control Board monitors the
temperature of the suction line to determine EEV orice size
in an attempt to maintain proper operating superheat.
This sensor connects to the Main Control Board at PLUG
CN-18.
The Outdoor Ambient Temperature Sensor is a negative
coecient thermistor that will change resistance in response
to outdoor air temperature changes. The Main Control Board
monitors the temperature of the outdoor air to determine
outdoor fan speed requirements and inverter speed. The
sensor also plays a role in calculation of required defrost
conditions.
This sensor connects to the Main Control Board at PLUG
CN-20.

Haier 1U12AP2VHA Specifications

General

Brand	Haier
Model	1U12AP2VHA
Category	Air Conditioner
Language	English