SiBE811001EB
Troubleshooting
CONVENI-PACK
148
Abnormal stop output and output during backup in the table above are output setting in outdoor units.
11
HPS
abnormal
detection
H3
High pressure
contactor
These conditions continued 2 min.
—
—
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
00
EJ
Recycle booster power or reset operation switch
12 Inverter error
L1
Inverter PCB
IGBT alarm detection or INV. error detected
4 times or more in 1 hour
—
INV. compressor forced stop turns OFF (52C: OFF)
After 1 min., forced OFF is released
System stops
ON when outdoor
unit is running
—
ON if AIRNET not present
1
00
EJ
Recycle power
13
INV.
compressor
INV. fin
temperature
rise
L4
Inverter PCB
9
• INV. compressor stops
• Fin temperature: 75°C (
φ
3), 73°C (
φ
1) & standby: 1 -
6 min.
• Compressor max limit is ON during retry attempts
• Retry counter decrements 1 when INV. compressor
runs 1 min. or more in total.
• 10
th
retry: INV. compressor stops due to error
• R2 signal goes OFF during retry standby
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
00
EJ
Recycle booster power or reset operation switch
14
INV.
compressor
momentary
overcurrent
L5
Inverter PCB
Overcurrent (65 A DC) flowed through
power transistor
9
• INV. compressor stops
• Standby: 1 - 6 min.
• Retry counter resets when INV. compressor runs
10 min. or more in total.
• 10
th
retry: INV. compressor stops due to error
• R2 signal goes OFF during retry standby
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
[L5 retry count]
10
(L5 output)
00
EJ
Recycle booster power or reset operation switch
15
INV.
compressor
overcurrent
L8
Inverter PCB
DC compressor overcurrent settings
14.8 A × 260 sec.
17.0 A × 5 sec.
9
• INV. compressor stops
• Standby: 1 - 6 min.
• Compressor max limit is ON during retry attempts
• Retry counter decrements 1 when INV. compressor
runs 1 min. or more in total.
• 10
th
retry: INV. compressor stops due to error
• R2 signal goes OFF during retry standby
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
[L8 retry count]
10
(L8 output)
00
EJ
Recycle booster power or reset operation switch
16
INV.
compressor
startup failure
L9
Inverter PCB
When compressor overload was detected,
33 A flowed continuously 5 sec., or
positioning signal disturbance caused by
noise occurred.
L9 pre-count 5
L9 retry count 9
• INV. compressor stops
• Standby: Ready to restart after 10 sec.
• After 5 pre-counts, "L9" retry count is output to
AIRNET
• Retry counter and pre-counter reset when INV.
compressor runs 1 min. or more in total.
• 10
th
retry: INV. compressor stops due to error
• R2 signal goes OFF during retry standby
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
[L9 retry count]
10
(L9 output)
00
EJ
Recycle booster power or reset operation switch
17
INV.
compressor
INV.-to-INV.
transmission
error
LC
Inverter PCB
Transmission has not succeeded for 15
sec. or more.
—
—
"LC" output to AIRNET when
no transmissions for 1 min.
ON when outdoor
unit is running
—
ON if AIRNET not present
1
00
EJ
Resets automatically
18
Power supply
voltage
imbalance
P1
Inverter PCB
Voltage waveform appeared identical to an
open phase
9
• INV. compressor stops
• Standby: 1 - 6 min.
• Retry counter decrements 1 when INV. compressor
runs 1 min. or more in total.
• Compressor max limit is ON during retry attempts
• 10
th
retry: INV. compressor stops due to error
• R2 signal goes OFF during retry standby
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
[P1 retry count]
10
(P1 output)
00
EJ
Recycle booster power or reset operation switch
19
Fin thermistor
error
P4
Inverter PCB
Radiation fin thermistor became OPEN or a
short circuit was detected.
—
—
"P4" output to AIRNET
ON
—
ON if AIRNET not present
1
00
EJ
Recycle booster power or reset operation switch
20
INV.
compressor
voltage too
low
U2
Inverter PCB DC voltage was 190 V or less
9
• INV compressor stops
• Standby: 1 - 6 min.
• Retry counter resets when INV compressor runs 10
min. or more total.
• 10
th
retry: INV compressor stops due to error
• R2 signal goes OFF during retry standby
INV. compressor stops due to
error
ON when outdoor
unit is running
—
ON if AIRNET not present
1
00
EJ
Recycle booster power or reset operation switch
21
Booster/
outdoor unit
transmission
error
U4
Main PCB
No transmissions occurred for 10 min.
—
—
Outputs error code "EJ"
If transmission
error occurs when
power is turned
ON: OFF
If it occurs during
operation or when
outdoor unit is
running: ON
—
ON if AIRNET not present
1
00
EJ
Resets automatically
List of Error Codes (LCBKQ3AV1)
No.
Item
Code
(Remote
controller
display)
Detection
device
Detection conditions
Times of retry
Retry action
Processing after error is
confirmed
R2 signal
Abnormal
stop output
Output during backup
(Only when AIRNET address is 0)
Times when using
AIRNET output
Sub-classification code
Display on
remote
controller
Reset procedure
&
• DC compressor guard timer timed up
• Received thermistor ON signal from
outdoor unit
• Received BU operation enabled
signal
• HPS is activated
• Operating mode = 0
• Operation switch is ON
OR
• Fin temperature rose to 92˚C or
higher
• Fin temperature rose to 78˚C or
higher for 30 min. or more while INV.
compressor ran for 60 min. in total.