Kaysun KCOF-22 DN4.0, Owner'S Manual

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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.
Table.7-3
Error Code Table
NO. Content
Display output
Possible causes
Four LED display Digital display
1 Mode conflict DEF./FAN LED flashes rapidly E0
The indoor unit’s operating
mode conflicts with that of the
outdoor units.
2
Communication error between
indoor and outdoor units
TIMER LED flashes rapidly E1
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.
3
Indoor ambient temperature
sensor error
OPERATION LED flashes
rapidly
E2
Temperature sensor not
connected properly or has
malfunctioned.
Damaged main PCB.
4
Indoor heat exchanger mid-point
temperature sensor error
OPERATION LED flashes
rapidly
E3
5
Indoor heat exchanger outlet
temperature sensor error
OPERATION LED flashes
rapidly
E4
6 Fan error TIMER LED flashes rapidly E6
Fan stuck or blocked.
Fan motor not connected
properly or has malfunctioned.
Power supply abnormal.
Damaged main PCB.
7 EEPROM mismatch DEF./FAN LED flashes rapidly E7 Damaged main PCB.
8 EEV error / Eb
Line loosened or broken.
The electronic expansion valve
in stuck.
Damaged main PCB.
9 Outdoor unit error ALARM LED flashes slowly Ed Outdoor unit error.
10 Water level error ALARM LED flashes slowly EE
Water level float stuck.
Water level switch not
connected properly.
Damaged main PCB.
Drain pump has malfunctioned.
11 The indoor unit has not been
assigned an address
OPERATION LED flashes
rapidly
FE
Indoor unit has not been
assigned an address.
Notes:
Flashing rapidly means flashing twice per second; flashing slowly means flashing once per second.