12 03(03H) 20D Fault in outdoor coil/suction
line sensor
Sensor is open-circuit or
short-circuit for 2min or longer.
Restorable when
given corrective
signal.
To test input signal of
system.
Hardware connection, I/O
voltage division
13 13(0DH) 31D Temperature shut-off Directional valve malfunction
repeats three times.
Restorable after
repair.
To prevent malfunction
of four-way valve.
Sensor, four-way valve,
system, control board
15 05(05H) 17D EEPROM error EEPROM data loss Default
operation/reset
restoration.
To set data/control
parameter.
EEPROM, data match, control
board
17 80(50H) 15D Compressor overheat Detected temperature of
discharge line is higher than
120°C.
Restorable when
lower than 100°C.
To prevent overload
(temperature
parameter).
Temperature, fan motor,
pressure, system
18 12(0CH) 23D Fault in operation mode Indoor units operate in different
modes.
Restorable in
same operation
mode.
To ensure same
operation mode.
User setting
>a__WcU[S^ <[c >a`V[e[a`Wc
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