Panasonic U-8ME1E81, Руководство по обслуживанию

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2WAY SYSTEM
Trouble Diagnosis
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
4. 2WAY Alarm Codes
P14 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check and
Correction
Example
Notes
P14
O
2
sensor operation
(1)
1-1
System configuration
Is an O
2
sensor being used? If “Yes”, see “3-1”.
If “No”, see “2-1”.
If “Yes”, change the setting of item code 0B
to “0000” from “0001”.
If “No”, see “3-1”.
If “Yes”, see “3-3”.
If “No”, see “3-2”.
(2)
2-1
Indoor EEPROM setting
Is the EEPROM setting, item code 0B, on the indoor control board set to 0001?
(3) Indoor control board
3-1 Is the alarm triggered if the EXCT socket (wire) is disconnected, and the power is reset?
3-2 Since there is no error, see what happens.
3-3 Indoor control board defective
replace board
—
—
(1) It is judged an error whenever the outdoor unit receives the signal “O
2
Alarm Generated”
from the indoor unit.
(2) With the indoor unit's EEPROM setting (item code 0B) set to 0001, the EXCT input was
shorted.
—
P16 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
P16
Compressor 1 (INV) overcurrent alarm
This alarm occurs when current trouble or current detection trouble occur (when trouble
judgement current is detected in the primary or secondary current, or when an instantaneous
secondary current of 18A* or higher is detected).
*
(1) When more than the over-current values shown in the table were detected in the primary
and secondary current.
(2) When more than the current values shown in the table are instantly detected in the
secondary current.
Secondary Primary
18A 18A
21A 21A
6 horsepower compressors
10 horsepower compressors
Changed to output error by current regardless of the inverter frequency.
In addition, there are 6 horsepower and 10 horsepower compressors.
There is a strong possibility of a compressor failure.
An alarm occurs for current detection trouble when it is judged that no current is flowing after
start (DCCT is damaged). In this case, the cause is a DCCT failure.
Check the power wiring and connector wiring.
It is possible to resolve this trouble by limiting the maximum frequency.
—
—
Secondary
28A
36A
6 horsepower compressors
10 horsepower compressors
L1
Power terminal board
Primary
current
L2 L3 N
Inverter compressor
HIC PCB
U
V
W
Secondary
current
P14 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check and
Correction
Example
Notes
P14
O
2
sensor operation
(1)
1-1
System configuration
Is an O
2
sensor being used? If “Yes”, see “3-1”.
If “No”, see “2-1”.
If “Yes”, see “3-1” after modification.
If “No”, see “4-1”.
If “Yes”, Modify the wiring.
If “No”, see “4-1”.
If “Yes”, see “4-3”.
If “No”, see “4-2 ”.
(2)
2-1
Indoor EEPROM setting
Is the EEPROM setting, item code 0B, on the indoor control board set to 0001?
(3)
3-1
EXCT wiring
Is the EXCT socket (wire) shorted?
(4)Indoor control board
4-1
4-2
4-3
Is the alarm triggered if the EXCT socket (wire) is disconnected, and the power is reset?
Since there is no error, see what happens.
Indoor control board defective
replace board
—
—
(1)
2
Alarm Generated”
from the indoor unit.
(2)
It is judged an error whenever the outdoor unit receives the signal “O
With the indoor unit's EEPROM setting (item code 0B) set to 0001, the EXCT input was
shorted.
—
P16 Alarm
2WAY SYSTEM
Trouble Diagnosis
4. 2WAY Alarm Codes
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
P16
Compressor 1 (INV) overcurrent alarm
This alarm occurs when current trouble or current detection
trouble occur (when trouble judgement current is detected
in the secondary current).
*
When more than the current values shown in the table are
instantly detected in the secondary current.
Changed to output error by current regardless of the inverter
frequency.
There is a strong possibility of a compressor failure.
An alarm occurs for current detection trouble when it is judged that no current is flowing after
start (DCCT is damaged). In this case, the cause is a DCCT failure.
Check the power wiring and connector wiring.
It is possible to resolve this trouble by limiting the maximum frequency.
—
—
Inverter compressor
HIC PCB
U
V
W
Secondar
y
current
Horsepower of unit
Secondary current
Current (A)
8HP
19.6 10HP
21.8
12HP
17.6
14HP
21.0
16HP
22.5
18HP
21.0
20HP
21.0
SM830205-04_2WAY_VRF_Euro.indb 26 15/01/20 15:29:48