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15.4 Error Codes
With the exception of a mode conflict error, contact your supplier or service engineer if any of the error codes listed in the following table are
displayed on the unit's display panel. If the mode conflict error is displayed and persists, contact your supplier or service engineer. These errors
should only be investigated by a professional technician. The descriptions are provided in this manual for reference only.
Content
Mode conflict
Communication error
between indoor and
outdoor units
Indoor ambient
temperature sensor
(T1) error
Indoor heat
exchanger mid-point
temperature sensor
(T2) error
Indoor heat
exchanger outlet
temperature sensor
(T2B) error
Fan error
EEPROM error
indoor EEV coil error
Outdoor unit error
Water level error
The indoor unit has
not beenassigned an
address
Notes:
Flashing rapidly means flashing twice per second; flashing slowly means flashing once per second.
Digital display output
E0
E1
E2
E3
E4
E6
E7
Eb
Ed
EE
FE
Possible causes
The indoor unit's operating mode conflicts with that of the outdoor
units.
Communication wires between indoor and outdoor units not
connected properly.
Interference from high voltage wires or other sources of
electromagnetic radiation.
Communication wire too long.
Damaged main PCB.
Temperature sensor not connected properly or has malfunctioned.
Damaged main PCB.
Fan stuck or blocked.
Fan motor not connected properlyor has malfunctioned.
Power supply abnormal.
Damaged main PCB.
Damaged main PCB.
Line loosened or broken.
The electronic expansion valve in stuck.
Damaged main PCB.
Outdoor unit error.
Water level float stuck.
Water level switch not connected properly.
Damaged main PCB.
Drain pump has malfunctioned.
Indoor unit has not been assigned an address.
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