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Master Outdoor Unit Inverter Com-
2 9 *
pressor Over Current
Master Outdoor Unit Inverter Com-
3 2 *
pressor1 High Discharge Temperature
Master Outdoor Unit Inverter Com-
3 3 *
pressor2 High Discharge Temperature
3 4 * High Pressure of Master Outdoor Unit
3 5 * Low Pressure of Master Outdoor Unit
Master Outdoor Unit Low Compres-
3 6 *
sion Ratio Limited
Master Outdoor Unit Inverter Com-
4 0 *
pressor CT Sensor Fault
Master Outdoor Unit Inverter Com-
4 1 *
pressor1 Discharge Temperature Sen-
sor Fault
Master Outdoor Unit Low Pressure
4 2 *
Sensor Fault
Master Outdoor Unit High Pressure
4 3 *
Sensor Fault
Master Outdoor Unit Air Temperature
4 4 *
Sensor Fault
Master Outdoor Unit Heat Exchanger
4 5 *
Temperature Sensor (Front side) Fault
Master Outdoor Unit Suction Tempera-
4 6 *
ture Sensor Fault
Master Outdoor Unit Inverter Com-
4 7 *
pressor2 Discharge Temperature Sen-
sor Fault
Master Outdoor Unit Faulty IPM Tem-
4 9 *
perature Sensor
Omitting connection of R, S, T power
5 0 *
of Master Outdoor Unit
5 1 * Excessive capacity of indoor units
Communication error : inverter PCB '
5 2 *
Main PCB
Communication error : indoor unit '
5 3 *
Main PCB of Outdoor Unit
Communication error : Main PCB '
5 7 *
inverter PCB
5 9 * Mixing Installation of Sub Outdoor Unit
Title
Master Outdoor Unit Inverter Compressor Fault
or Drive Fault
Master Outdoor Unit Inverter Compressor1
High Discharge Temperature
Master Outdoor Unit Inverter Compressor2
High Discharge Temperature
High Pressure of Master Outdoor Unit
Low Pressure of Master Outdoor Unit
Master Outdoor Unit Low Compression Ratio
Limited
Master Outdoor Unit Inverter Compressor CT
Sensor open or short
Master Outdoor Unit Inverter Compressor Dis-
charge Temperature Sensor open or short
Master Outdoor Unit Low Pressure Sensor
open or short
Master Outdoor Unit High Pressure Sensor
open or short
Master Outdoor Unit Air Temperature Sensor
open or short
Master Outdoor Unit Heat Exchanger Tempera-
ture Sensor(Front side) open or short
Master Outdoor Unit Suction Temperature Sen-
sor open or short
Master Outdoor Unit Inverter Compressor2 Dis-
charge Temperature Sensor open or short
Master Outdoor Unit IPM Temperature Sensor
short/open
Omitting connection of Master outdoor unit
Excessive connection of indoor units compared
to capacity of Outdoor Unit
Failing to receive inverter signal at main PCB of
Master Outdoor Unit
Failing to receive indoor unit signal at main PCB
of Outdoor Unit .
Failing to receive signal main PCB at inverter
PCB of Master Outdoor Unit
Mixing Installation of Old Sub Outdoor Unit and
New Slave Outdoor Unit
TEST RUN
Cause of Error
91

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  • Robert Falco Sep 02, 2019 01:27:
    looking for piping diagram for an LG unit Arum144