Nomadic Cooling Co 5 X Series AC Unit Operation Guide Version 1.0-100323
1. The battery power is insufficient and
under voltage E2.
A. Check the battery for aging and
repace it.
B. If the battery is not fully charged,
it needs to be charged.
C. Connect the negative pole of the
power line to the metal or the genera-
tor, reconnect the wirings or harness.
2. Pressure Fault (System leakage) E4.
• Refrigerant leakage or poor
heat dissipation.
3. Sensor Fault E0 or E1.
A. Check whether the plug-in is loose
and re-insert it tightly.
B. Sensor quality problem, repace
the sensor.
4. High current protection F6, or
electronic fan fault F7.
A. Check the condenser heat dissipation,
whether the surface is dirty/blocked.
B. Check whether the terminal or plug-
in of the power line is loose.
C. Check if the plug-in of the fan is loose,
and plug it in again.
D. Condenser fan failure, repace the fan.
If any of the below codes appear, turn off power to the AC unit. After 5 minutes, turn the AC
unit power back on. If the fault is not solved, please refer to the maintenance manual or contact
the local dealer.
Code Description Troubleshooting
E0 Outlet temp sensor fault Check sensor connector
E1 Inlet temp sensor fault Check sensor connector
E2 Low Voltage Check battery or harness
E3 High Voltage Check battery or power
E4 Pressure (system leakage) Check R134a leakage
F0 Disconnected/Blocked compressor Check cooling fan working / R134a over charge
F1 Compressor driver overheat Check cooling fan working / Ambient >55ºC
F2 Compressor driver wire low-voltage Check harness false connection or not
F3 Compressor driver over voltage Check wire false connection
F4 Compressor driver phase absence Check wire false connection
F5 Driver output overload Check wire false connection
F6 Driver output over current Check cooling fan working / Ambient >55ºC
F7 Cooling fan fault Check cooling fan working
X SERIES FAULT CODES AND PROCESSING METHODS
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