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ESI Outdoor Unit Installation Instruction
05.2018
Manufacturer reserves the right to change at any time for specifications or designs without notice and incurring obligations.
Display
Module temperature sensor fault (TF)
YES
NO
Check whether TF sensor is seated to the specified location and
connected to CN22 on the main control board.
Reconnect the sensor
Check whether the resistance of sensor is in the range of
Temperature sensor B*
.
YES
NO
Replace the faulty sensor
*Note
Check whether there are other heat sources around sensor
NO
YES
Remove all the other heat source
Replace the main control board
1.Error definition:
The module temperature sensor (TF) is short circuit or open circuit.
2.Possible causes:
Damaged main control board
Loose connection at port on main control board.
Temperature sensor failure
There are other heat sources around the sensor
Note:
TF senor has been laid inside the assembly control box with silicon gel contacting the radiator . It’s
required to replace the main control board in this case.