15
7.4 Error codes
With the exception of a mode conflict error, contact your supplier or service engineer if any of the error codes listed in
Table 7-3 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 owner's manual for reference only.
Notes:
NO.
1
2
3
4
5
6
7
8
9
10
Display output
Four LED display Digital display
Mode conflict
Communication error between
indoor and outdoor units
Indoor ambient temperature
sensor error
Indoor heat exchanger mid-point
temperature sensor error
Indoor heat exchanger outlet
temperature sensor error
Fan error
EEPROM mismatch
Outdoor unit error
Water level error
The indoor unit has not been
assigned an address
Content
DEF./FAN LED
flashes rapidly
TIMER LED flashes
rapidly
OPERATION LED
flashes rapidly
ALARM LED flashes
slowly
OPERATION LED
flashes rapidly
OPERATION LED
flashes rapidly
TIMER LED flashes
rapidly
DEF./FAN LED
flashes rapidly
ALARM LED flashes
slowly
OPERATION LED
flashes rapidly
E0
FE
EE
Ed
E7
E6
E4
E3
E2
E1
Table.7-3
Error Code Table
Possible causes
Communicaon wires between
indoor and outdoor units not
connected properly.
Interference from high voltage
wires or other sources of
electromagnec radiaon.
Communicaon wire too long.
Damaged main PCB.
The indoor unit’s operang mode
conflicts with that of the outdoor
units.
Temperature sensor not
connected properly or has
malfunconed.
Damaged main PCB.
Fan stuck or blocked.
Fan motor not connected properly
or has malfunconed.
Power supply abnormal.
Damaged main PCB.
Damaged main PCB.
Outdoor unit error.
Water level float stuck.
Water level switch not connected
properly.
Damaged main PCB.
Drain pump has malfunconed.
Indoor unit has not been assigned
an address.
EEV error
/
Eb
Line loosened or broken.
The electronic expansion valve
in stuck.
Damaged main PCB.
11
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