Outdoor Ambient Temperature Sensor Error

The ntc sensor s resistance decreases as the outside air temperature increases.

Outdoor ambient temperature sensor error.

43 communication failure with unit a 44 communication failure with unit b 45 communication failure with unit c 46 communication failure with unit d 47 unit a freeze protection 48 unit b freeze protection. System low pressure protection. The sensor detects an abnormally low or high outdoor ambient temperature. The sensor detects an abnormally low or high coil temperature.

Outdoor mid coil temperature sensor malfunction. Out unit low side value temperature sensor t2b open circuit or short. 84 outdoor ambient temperature fault. The ambient atc or outside air temperature sensor is an ntc negative temperature coefficient sensor that informs the semiautomatic automatic temperature control system of outside air temperature.

Check sensor is installed correctly on control. Compressor discharge high temperature protection. F1 ol 2 time tl on outdoor ambient temperature sensor t4 open circuit or short f2 ol 3 time tl on circuit. Check unit placement if the outdoor unit is in a high temperature area wait until the ambient.

Outdoor unit eeprom error. The mounting tabs can be used to surface or suspension mount the temperature sensors. Outdoor ambient temperature sensor open circuit or short circuit. If not available use heat pump if outdoor.

Inverter module igbt over strong current protection. Open circuit or short circuit. Open or short circuit of indoor room or evaporator temperature sensor. Outdoor ambient temperature sensor malfunction.

Outdoor discharge air temperature sensor. Cooling oil return cycle. Condenser coil temperature sensor t3 open circuit or short circuit. Indoor coil temperature sensor is open or shorted control board sets temp to 40 f.

Use elec heat if available for heating. Open or short circuit of outdoor ambient or condenser temperature sensor. Open circuit or short circuit of compressor discharge temperature sensor t5. Open circuit or short circuit of outdoor ambient temperature sensor t4.

24 installation and maintenance service manual 14 18k. The computer uses this input along with other in car temperature. Fan speed out of control. Temperature protection of.

The temperature sensors are mounted in a nema 4x enclosure with integral mounting tabs. The series o 4 outside air temperature sensors are great for monitoring ambient air temperatures in outdoor applications. Unit continues to operate. Outdoor fan speed has been out of control.