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Failure code
Abnormal communication
between wired controller and
indoor unit PCB
Drainage system abnormal
The short-connector disconnected, or at wrong
position, or the float switch broken down or the
float switch disconnected,or at wrong position
FAILURE CODE
(CHECK THE WIRED
REMOTE CONTROLLER)
TROUBLE SHOOTING
(indoor unit)
TROUBLE SHOOTING
(ourdoor unit)
FAILURE CODE
(CHECK THE WIRED
REMOTE CONTROLLER)
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Abnormal communication
between chip TMP/807 and chip
TMP/846
0E
Faulty indoor unit PCB
POSSIBLE REASONS
Indoor unit address repeated
09
Wrong setting of indoor unit address
07
Wrong connection, or use the wired controller
be disconnected, faulty PCB
08
Faulty defrost sensor Te
Sensor disconnected, or broken, or short circuit
Faulty sensor Tao Sensor disconnected, or broken, or short circuit
Faulty sensor Ts Sensor disconnected, or broken, or short circuit
Faulty sensor Td
Sensor disconnected, or broken, or short circuit
Input overcurrent
Over current of the system, or broken of the
current sensor,or malfunction with indoor or
outdoor fan motors, or faulty PCB.
15
16
17
14
19
System high pressure
protection
High pressure switch is disconnected, or high
pressure switch worked, or Tc too high and
faulty outdoor fan motor when cooling, or
faulty indoor fan motors when heating, or
refrigerant overabundance
1E
System low pressure
protection
Low pressure switch is disconnected, or low
pressure switch worked, or Te too low and
faulty outdoor fan motors when heating, or
faulty indoor fan motor when cooling, or
refrigerant shortage
1F
IPM protection
IPM over current, or short circuit, or IPM
temperature too high, or IPM input voltage
too low,or faulty SPDU(or ISPM).
EEPROM fault
Faulty outdoor unit PCB
20
21
Over hot protection of
compressor
Serious lack of refrigerant of the system, or
the ambient temperature too high, or PMVs be
blocked
22
Over hot protection of SPDU
(or ISPM)
Ambient tempreatrue too high, or outdoor fan
be blocked, or bad air circulation of outdoor unit
23
DC fan motor fault
Fan is blocked, or the terminal is disconnected
from the PCB
24
POSSIBLE REASONS