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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
DC fan motor over-load protection
1.Error definition:
a) The fan rotation speed is less than 240RPM if it has the running signal.
b) The rotation speed difference between the detected value and target one is over 200RPM
for 3 minutes.
2.Possible causes:
Damaged main control board
Malfunction of fan motor
Disconnected wiring between fan motor and main control board
YES
NO
Is the fan motor cable connected to CN8 on main control board?
Connect the cable
Turn off power supply, check whether the motor shaft is stuck.
(Try using tools to rotate the motor manually)
NO
YES
Replace the motor
Replace the main control board
Low compressor voltage protection
1.Error definition:
P8: The detected compressor voltage by main chip is less than 310VDC.
E8: System locks up when P8 has occurred three times in 60 minutes.
2.Possible causes:
Abnormal power supply voltage
Damaged main control board.
Display
or
YES
Abnormal power supply voltage
Contact agency supplying power
to verify that they are sending the
correct voltage.
Replace the main control board
NO
NO
Had the IoT gateway successfully communicated with cloud
after installation?
Make sure the IoT gateway can
work.
YES