Troubleshooting with LED SiBE18-821_C
326 Troubleshooting
Error code indication in monitor mode
<Selection of setting item>
<Monitor mode>
<Confirmation of malfunction 1>
To enter the monitor mode, push the
MODE (BS1) button when in
“Setting mode 1”.
Push the SET (BS2) button and set
the LED display to a setting item for
error code.
Refer to page 143 for setting item.
Push the RETURN (BS3) button
once to display "First digit" of error
code.
<Confirmation of malfunction 2>
Push the SET (BS2) button once to
display "Second digit" of error code.
Push the RETURN (BS3) button and
switches to the initial status of
“Monitor mode”.
∗ Push the MODE (BS1) button and
returns to “Setting mode 1”.
<Confirmation of malfunction 3>
Push the SET (BS2) button once to
display "malfunction location".
Detail
description
on next
page.
<Confirmation of malfunction 4>
Push the SET (BS2) button once to
display "master or slave 1 or slave 2"
and "malfunction location".
Contents of malfunction Error code
Outdoor unit PCB abnormality Detection of DIII-Net
E1
Actuation of high pressure switch High pressure switch activated (S1PH) E3
Actuation of low pressure switch Abnormal Pe
E4
Compressor motor lock Detection of compressor lock
E5
Outdoor fan motor abnormality Detection of fan motor lock (M1F)
E7
Detection of fan motor lock (M2F)
Moving part of electronic expansion
valve (Y1E, Y3E) abnormality
Y1E (main)
E9
Y3E (subcooling)
Outdoor temperature thermistor (R1T)
abnormality
Short or open circuit (R1T)
H9
Discharge pipe temperature
abnormality
Abnormal Td
F3
Refrigerant overcharged Refrigerant overcharge
F6
Discharge pipe thermistor (R2T)
abnormality
Short or open circuit (R2T) J3
Suction pipe thermistor (R3T, R5T)
abnormality
Short or open circuit (suction 1: R3T) J5
Short or open circuit (suction 2: R5T)
Outdoor heat exchanger thermistor
(R4T) abnormality
Short or open circuit (R4T) J6
Outdoor liquid pipe thermistor (R7T)
abnormality
Short or open circuit (R7T) J7
Subcooling heat exchanger gas pipe
thermistor (R6T) abnormality
Short or open circuit (R6T) J9
High pressure sensor abnormality
Short or open circuit (S1NPH) JA
Low pressure sensor abnormality
Short or open circuit (S1NPL) JC
Outdoor unit PCB abnormality Faulty IPM L1
Abnormal current sensor offset
Abnormal IGBT
Faulty current sensor
Abnormal SP-PAM overvoltage
Radiation fin temperature rise Overheating (FINTH)
L4
Inverter compressor abnormality Inverter instantaneous overcurrent
L5
Inverter current abnormality Electronic thermal switch 1
L8
Electronic thermal switch 2
Out-of-step
Speed down after startup
Lightening detection
Inverter start-up error Stall prevention (Current increasing)
L9
Stall prevention (Faulty start up)
Abnormal waveform in startup
Out-of-step
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