4
Cause of Error
Cause:The unit detects a short circuit or open circuit of the
indoor temperature sensor during the inspection of main
control panel in the indoor unit, indicated by “internal
temperature sensor error”.
Inspection path: Sensor → Sensor wire → Connectors →
Main indoor unit control panel
Tools Required
Multimeter, 15KΩ standard sensor (25℃)
Possible Broken Part
Internal temperature sensor, main internal 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. If no standard sensor is available, replace the internal
temperature sensor, and then check if the error persists;
if yes, check the main internal control panel and replace it.
Key Details
You can switch the unit to “Fan” mode and judge the accuracy
of the sensor though the temperature displayed on the screen.
DO NOT USE A SENSOR WITH A VALUE LOWER OR HIGHER
THAN 15KΩ
E1 – INTERNAL TEMPERATURE SENSOR ERROR
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