Panasonic U-8MF1E8 Mode D'emploi page 26

1 Press and hold the button and button for 4
seconds or longer (simple settings mode).
2 "ALL" is displayed on the remote controller.
3 Next, press the button.
4 The address is displayed for 1 of the indoor units which is
connected to the remote controller. Check that the fan of
that indoor unit starts and that air is discharged.
5 Press the button again and check the address of
each indoor unit in sequence.
6 Press the button again to return to normal remote
controller mode.
Number changes to indicate which
indoor unit is currently selected.
Indoor unit address
* 2 How to change the setting from PC
Be sure to make a setting from a personal computer when
utilizing the shared solenoid valve kit by Method 3.
• Setting change must be necessary at all indoor units of
same refrigerant system.
• Consult how to change the setting.
Remote Controller Test Run Settings
1 Press the remote controller button for 4 seconds or
longer. Then press the button.
●
"TEST" appears on the LCD display while the test run is
in progress.
●
The temperature cannot be adjusted when in Test Run
mode.
(This mode places a heavy load on the machines.
Therefore use it only when performing the test run.)
2 The test run can be performed using the HEAT, COOL, or
FAN operation modes.
Note: The outdoor units will not operate for approximately
3 minutes after the power is turned ON and after
operation is stopped.
3 If correct operation is not possible, a code is displayed on
the remote controller display.
(Refer to "Table of Self-Diagnostic Functions" and correct
the problem.)
4 After the test run is completed, press the button
again. Check that "TEST" disappears from the LCD
display.
(To prevent continuous test runs, this remote controller
includes a timer function that cancels the test run after 60
minutes.)
* If the test run is performed using the wired remote
controller, operation is possible even if the cassette-type
ceiling panel has not been installed. ("P09" display does
not occur.)
SUPPLEMENT
7-5. Caution for Pump Down
Pump down means refrigerant gas in the system is returned
to the outdoor unit. Pump down is used when the unit is to be
moved, or before servicing the refrigerant circuit. (Refer to the
Service Manual)
CAUTION
● This outdoor unit cannot collect more than the rated
refrigerant amount as shown by the nameplate on the
back.
● If the amount of refrigerant is more than that
recommended, do not conduct pump down. In this case
use another refrigerant collecting system.
7-6. Meaning of Alarm Messages
Table of Self-Diagnostics Functions and Description of
Alarm Displays
Alarm messages are indicated by the blinking of LED 1 and 2
(D72, D75) on the outdoor unit PCB. They are also displayed on
the wired remote controller.
●
Viewing the LED 1 and 2 (D72 and D75) alarm displays
LED 1 LED 2 Alarm contents
Alarm display
LED 1 blinks M times, then LED 2 blinks N
times. The cycle then repeats.
M = 2: P alarm 3: H alarm 4: E alarm
5: F alarm 6: L alarm
N = Alarm No.
Alternating
Example: LED 1 blinks 2 times, then LED
2 blinks 17 times. The cycle then repeats.
Alarm is "P17."
( : Blinking)
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Alarm
Possible cause of malfunction
message
Remote controller Error in receiving serial
is detecting error communication signal. (Signal
signal from indoor from main indoor unit in case <E01>
unit. of group control) Ex: Auto
address is not completed.
Error in transmitting serial
<E02>
communication signal.
Indoor unit is detecting error signal from remote
<<E03>>
controller (and system controller).
Indoor unit is Error in receiving serial
detecting error communication signal. When
signal from main turning on the power supply,
outdoor unit. the number of connected E04
indoor units does not
correspond to the number set.
(Except R.C. address is "0.")
Error of the main outdoor unit in
receiving serial communication <E06>
signal from the indoor unit.
Improper setting Indoor unit address setting is
E08
of indoor unit or duplicated.
remote controller.
Remote controller address
connector (RCU. ADR) is
<<E09>>
duplicated. (Duplication of main
remote controller)
During auto. Starting auto. address setting
address setting, is prohibited.
number of This alarm message shows
connected that the auto address E12
units does not connector CN100 is shorted
correspond to while other RC line is executing
number set. auto address operation.
Error in auto. address setting.
When turning
(Number of connected indoor
E15
on the power
units is less than the number
supply, number
set)
of connected
Error in auto. address setting.
units does not
(Number of connected indoor
correspond to
E16
units is more than the number
number set.
set)
(Except R.C.
address is "0.") No indoor unit is connected
E20
during auto. address setting.
Main outdoor unit is detecting
error signal from sub outdoor E24
unit.
Error of outdoor unit address
E25
setting.
The number of connected main
and sub outdoor units do not
E26
correspond to the number set
at main outdoor unit PCB.
Error of sub outdoor unit in
receiving serial communication E29
signal from main outdoor unit.
Indoor unit
Error of main indoor unit in
communication receiving serial communication
E18
error of group signal from sub indoor units.
control wiring.
Alarm
Possible cause of malfunction
message
Improper setting. This alarm message shows
when the indoor unit for
L02
multiple-use is not connected
to the outdoor unit.
Duplication of main indoor
unit address setting in group <L03>
control.
Duplication of outdoor R.C.
L04
address setting.
Group control wiring is
connected to individual control L07
indoor unit.
Indoor unit address is not set. L08
Capacity code of indoor unit is
<<L09>>
not set.
Capacity code of outdoor unit
L10
is not set.
Incorrect wiring of remote
group control wiring (in case of L11
shared solenoid valve kit)
Mis-matched connection of
outdoor units which have L17
different kinds of refrigerant.
4-way valve operation failure L18
Protective device Thermal protector in indoor unit
<<P01>>
in indoor unit is fan motor is activated.
activated.
Improper wiring connections of
<<P09>>
ceiling panel.
Float switch is activated. <<P10>>
Protective device Compressor thermal protector
in outdoor unit is is activated.
activated. Power supply voltage is
P02
unusual. (The voltage is more
than 260 V or less than 160 V
between L and N phase.)
Incorrect discharge
P03
temperature. (Comp. No. 1)
High pressure switch is
P04
activated.
Negative (defective) phase. P05
O sensor (detects low oxygen
2
P14
level) activated
Compressor running failure
resulting from missing phase
in the compressor wiring, etc. P16
(Start failure not caused by
IPM or no gas.)
Incorrect discharge
P17
temperature. (Comp. No. 2)
Compressor 3 discharge temp.
P18
failure
Outdoor unit fan motor is
P22
unusual.
Overcurrent at time of
compressor runs more than
80Hz (DCCT secondary current
P26
or ACCT primary current is
detected at a time other than
when IPM has tripped.)
IPM trip (IPM current or
H31
temperature)
Inverter for compressor is
unusual. (DC compressor does
P29
not operate.)
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