2WAY VRF SYSTEM
Test Run
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8. Self-Diagnosis Function Table and
Contents of Alarm Display
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Contents of alarm display on remote controller
For the remote controller, there are other alarm contents listed on the following table besides the alarm display on outdoor main
unit control P.C. board.
Wired remote
control display
Detected contents
<E01>
Remote controller is detecting error signal
from indoor unit.
Indoor unit does not respond to remote controller.
<E02>
The remote controller is having error in sending serial
communication signal.
<<E03>>
Controller does not respond to indoor unit.
E04
Indoor unit is detecting error signal from
main outdoor unit.
Outdoor unit does not respond to indoor unit.
E06
Outdoor unit is detecting error signal from
indoor unit.
Some indoor units does not respond to outdoor unit.
E08
Improper setting of indoor unit or remote
controller.
Indoor unit address is dupulicating.
<<E09>>
Two or more remote controllers are set as main on R1-R2 link.
E12
During auto address setting, number of
connected units does not correspond to
number set.
When turning on the power supply, number
of connected units does not correspond to
number set.
(Except R.C. address is “0.”)
Auto Address failed to start.
E15
Fewer indoor units are found in Auto Addressing than the setting
on outdoor PCB.
E16
More indoor units are found in Auto Addressing than the setting
on outdoor PCB.
E20
No indoor unit responded in Auto Addressing.
E24
No response from sub outdoor unit.
E25
The outdoor unit address is duplicating.
E26
The number of responding outdoor units does not match with
the setting on the main outdoor unit.
E29
No response from main outdoor unit.
E31
Error in communication inside outdoor unit control box.
<<L02>>
Improper setting.
Indoor unit model does not match with the outdoor unit model.
(Multi-split/mini-split)
<L03>
Two or more indoor units are set as main in group control.
L05
Two or more indoor units are set as priority indoor unit.
L06
Two or more indoor units are set as priority indoor unit.
L07
Group control wiring is detected for indoor unit set as individual
control.
L08
Indoor unit address is not set.
<<L09>>
Capacity setting of indoor unit is not correct.
L04
Duplicate system address setting on outdoor units.
L10
Capacity setting of outdoor unit is not correct.
L17
Model mismatch between outdoor units in one refrigerant circuit.
L18
Reversing valve or solenoid valve failure.
Remote control display
Alarm contents
P04
Protection device activated. High pressure switch (63PH, 63PH1 or 63PH2) or compressor thermal
protector (49C1 / 49C2).
P05
Missing phase in power input is detected at HIC for 1st compressor.
P09
Connection to the panel of indoor unit is not good.
P10
Float switch of drain pan safety is activated.
P11
Drain pump failure or locked rotor.
P12
Indoor fan inverter protection control is activated.
P14
Input detected at EXCT terminal on indoor PCB for refrigerant detector.
P15
Missing phase in power input is detected at HIC for 2nd compressor.
P16
Overcurrent of 1st compressor on the secondary side of inverter circuit, or inverter failed to syncronize
with rotation.
P17
2nd compressor discharge temperature too high.
P19
Inverter for 2nd compressor failed to start or failed to syncronize with rotation.
P20
Too high load in refrigerant circuit.
P22
Fan motor or inverter drive of outdoor unit has failure.
P26
Overcurrent of 2nd compressor on the secondary side of inverter circuit, or inverter failed to syncronize
with rotation.
P29
Inverter for 1st compressor failed to start or failed to syncronize with rotation.
P31
Other indoor unit in group control has an alarm.
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