Troubleshooting Guide

15
Cause of Error
Cause: The detection of short circuit or open circuit of
external termperature sensor during the inspection of
outdoor unit control panel, indicated by "external
termperature sensor error".
Inspection path: Sensor → Sensor wire → Connectors →
Outdoor unit control panel
Tools Required
Multimeter, 15KΩ standard sensor
Possible Broken Part
External temperaturesensor, outdoor unit control panel.
Troubleshooting
Procedures
1. Check if there’s resistance problem, short circuit or open
circuit in the sensor; the resistance value should be
within a reasonable range (15KΩ under the temperature
of 25℃).
2. Check if the sensor wire is broken.
3. Check if the terminal connectors are well fixed; check if
the weld between the terminal and the main control
panel is loose and pull the terminal slightly for
inspection if necessary.
4. Check if the sensor is damp/wet.
5. Replace the external temperature sensor and check if
the error still exists; if the error disappears, replace the
sensor; if the error still exists, it's possible that the main
control panel is faulted, change the outdoor unit control
panel.
Key Details
DO NOT USE A SENSOR WITH A VALUE LOWER OR HIGHER
THAN 15KΩ
F6 – EXTERNAL TEMPERATURE SENSOR ERROR