SG-38MPRA-02 Specifications subject to change without notice.
21
Troubleshooting (continued)
Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the indicator light flashes in a corresponding series, the timer display may turn on or
begin flashing, and an error code displays. These error codes are described in Table 17.
Table 17 — Error Codes
For other codes
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a temperature reading.
Troubleshooting
Test the indoor unit using the remote control. If the unit display is working however will not respond to the remote, the indoor PCB needs to be
replaced. If there is no display after pressing
LED
and the unit responds, the display board needs to be replaced.
DISPLAY
ERROR INFORMATION
SOLUTION
E0/EA
Indoor unit EEPROM parameter error
Page 29
E1
Indoor / outdoor units communication error
E2
Zero crossing detection error diagnosis and solution
Page 32
E3
The indoor fan speed is operating outside of the normal range
Page 33
E4
Indoor room temperature sensor T1 is in open circuit or has short circuited
Page 39
E5
Evaporator coil temperature sensor T2 is in open circuit or has short circuited
Page 39
EB
Communication error between the indoor PCB and display board
Page 40
EF
Occupancy Sensor module error
Page 35
F0
Overload current protection
Page 41
F1
Outdoor ambient temperature sensor T4 open circuit or short circuit
Page 39
F2
Condenser coil temperature sensor T3 is in open circuit or has short circuited
Page 39
F3
Compressor discharge temperature sensor TP open circuit or short circuit
Page 39
F4
Outdoor unit EEPROM parameter error
Page 29
F5
The outdoor fan speed is operating outside of the normal range
Page 32
P0
IPM malfunction or IGBT over-strong current protection
Page 42
P1
Over voltage or over low voltage protection
Page 36
P2
High temperature protection of IPM module
Page 37
P3
Outdoor ambient temperature is too low
P4
Inverter compressor drive error
Page 38
