Troubleshooting by Error Codes SiUS281811EA
212 Part 6 Service Diagnosis
4.3 Error Code Indication by Outdoor Unit PCB
Selection of setting item
Confirmation of error 1
To enter the monitor mode, press
the MODE (BS1) button when in
“Setting mode 1”.
Press the SET (BS2) button and set
the LED display to a setting item.
Press the RETURN (BS3) button
once to display "First digit" of error
code.
Confirmation of error 2
Press the SET (BS2) button once to
display "Second digit" of error code.
Press the RETURN (BS3) button
and switches to the initial status of
“Monitor mode”.
Press the MODE (BS1) button and
return to “Setting mode 1”.
Confirmation of error 3
Press the SET (BS2) button once to
display "error location".
Detailed
description
on next
page.
Confirmation of error 4
Press the SET (BS2) button once to
display "master or slave 1 or slave 2"
and "error location".
Monitor mode
Error Description
Error Code
PCB abnormality
E1
Abnormal high pressure switch High pressure switch activated E3
Abnormal low pressure switch Low pressure switch activated E4
fo noitceteDkcol rosserpmoC inverter compressor lock E5
Overload, overcurrent,
abnormal lock of outdoor fan motor
Detection of DC fan 1 motor lock E7
Detection of DC fan 2 motor lock
Electronic expansion valve
abnormality
9EniaM
Subcooling
3FidT lamronbAerutarepmet epip egrahcsid lamronbA
Abnormal heat exchanger temperature Refrigerant overcharge F6
Defective thermistor of outdoor air
temperature
Defective Ta sensor (short) H9
Defective discharge pipe thermistor Defective Tdi sensor (short) J3
Defective suction pipe thermistor Defective Ts1 sensor (short) J5
Defective Ts2 sensor (short)
Defective outdoor heat exchanger
deicer thermistor
Defective Tb sensor (short) J6
Defective outdoor heat exchanger
liquid pipe thermistor
Defective TI sensor (short) J7
Defective subcooling heat exchanger
gas pipe thermistor
Defective Tsh sensor (short) J9
Defective sensor of high pressure Defective Pc sensor (short) JA
Defective sensor of low pressure Defective Pe sensor (short) JC
Defective PCB (for inverter
compressor)
1LMPI evitcefeD
Abnormal current sensor offset
Abnormal IGBT
Defective current sensor
Abnormal SP-PAM overvoltage
Abnormal Interleave
Abnormal inverter jumper setting
Abnormal EEPROM
Inverter radiation fin temperature rising
Overheating of inverter radiation fin temperature
L4
DC output overcurrent Inverter instantaneous overcurrent L5
Electronic thermal Electronic thermal switch 1 L8
Electronic thermal switch 2
Out-of-step
Speed down after startup
Lightening detection
Stall prevention (Limit time) Stall prevention (Current increasing) L9
Stall prevention (Defective start up)
Abnormal wave form in startup
Out-of-step
Transmission error (Between microcomputers on the outdoor main PCB) LC