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.

Outdoor ambient temperature sensor error.

Overvoltage or too low voltage protection. Out unit low side value temperature sensor t2b open circuit or short. The sensor detects an abnormally low or high outdoor ambient temperature. System low pressure protection.

Cooling oil return cycle. Outdoor ambient temperature sensor open circuit or short circuit. Compressor discharge high temperature protection. The mounting tabs can be used to surface or suspension mount the temperature sensors.

Condenser coil temperature sensor t3 open circuit or short circuit. Inverter module igbt over strong current protection. Unit continues to operate. Indoor coil temperature sensor is open or shorted control board sets temp to 40 f.

The computer uses this input along with other in car temperature. Temperature protection of. Fan speed out of control. The series o 4 outside air temperature sensors are great for monitoring ambient air temperatures in outdoor applications.

Outdoor fan speed has been out of control. Open or short circuit of indoor room or evaporator temperature sensor. Outdoor unit eeprom error. If not available use heat pump if outdoor.

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

The temperature sensors are mounted in a nema 4x enclosure with integral mounting tabs. Outdoor ambient temperature sensor malfunction. The sensor detects an abnormally low or high coil temperature. Use elec heat if available for heating.

Outdoor discharge air temperature sensor. 84 outdoor ambient temperature fault. Outdoor coil temperature sensor is open or shorted sets temp to 20 f. Open or short circuit of outdoor ambient or condenser temperature sensor.

The ntc sensor s resistance decreases as the outside air temperature increases. Open circuit or short circuit of compressor discharge temperature sensor t5. Outdoor mid coil temperature sensor malfunction. Open circuit or short circuit.