24
Power supply surge or
over voltage.
Power supply voltage
dip or interruption.
Power supply fast
transient or burst.
Check the quality of the power
supply.
Bad earth connection.
Check that all the earth cables are
correctly connected, expecially the
outdoor pcb's earth cable and the
compressor's earth.
Bad connection
between outdoor and
the heatsink.
Check that the outdoor pcb is
properly connected to the heatsink
and that the screws on the pcb are
properly mounted with the right
torque. Check that there is enough
thermal paste between the pcb and
the heatsink.
EEV damaged.
Check the EEV functioning. A
malfunctioning on the expansion
valve may cause liquid flood back on
the compressor.
Compressor and fan
are stopped.
The system restarts
automatically after
3 minutes.
Outdoor pcb damaged.
Only if the error is recurrent, change
the outdoor pcb.
3
PFC (Power Factor
Controller)
protection:
automatic
protection against
power supply
disturbances and
instabilities.
Compressor and fan
are stopped.
Outdoor pcb damaged,
MCE microcontroller not
programmed or MCE
microcontroller
firmware is corrupted.
If the error is permanent, change the
outdoor pcb.
Bad connection
between the fan
motor's module and the
heatsink, or missing fan
module's heatsink.
Check that the fan motor module is
properly connected to the heatsink
and that the screws on the module
are properly mounted with the right
torque. Check that there is enough
thermal paste between the fan
module and the heatsink.
The rear of the outdoor
unit is obstructed.
Remove the obstruction.
4
Automatic
protection against
overheating on the
power electronics
(fan motor
module).
Compressor and fan
are stopped.
The system restarts
automatically after
3 minutes.
Incorrect fan operation. Check that fan works properly.
Fan motor
disconnected.
Check the fan motor connector.
Fan motor blocked /
obstructed.
Remove the obstruction.
Fan motor damaged.
Check if the fan motor starts. If it
does not start correctly, change the
fan motor.
5
Automatic
protection against
fan motor
overcurrent.
Compressor and fan
are stopped.
The system restarts
automatically after
3 minutes.
Outdoor pcb damaged.
Only if the error is recurrent, change
the outdoor pcb.
Summary of Contents for AEI1G 42 EMX
Page 27: ...27 13 Component replacement FRONT RIGHT LEFT AND REAR PANEL ...
Page 28: ...28 ...
Page 29: ...29 CONTROL AND EXPANSION BOARD remove the right the left the front and the rear panel ...
Page 30: ...30 ...
Page 31: ...31 ...
Page 32: ...32 COMPRESSOR remove the right the left the front and the rear panel ...
Page 33: ...33 EXPANSION VALVE remove the right the left the front and the rear panel ...
Page 34: ...34 FAN MOTOR remove the right the left the front and the rear panel ...
Page 36: ...36 15 Labels Energy labels AEI1G 42 EMX ...
Page 37: ...37 AEI1G 50 EMX Energy labels ...
Page 38: ...38 Rating labels ...
Page 39: ... ARGOCLIMA SPA Via Alfeno Varo 35 Alfianello BS Italy ...
