Panasonic EAIRC-MJ Series Installation Instructions

32
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
(D302, D303) on the outdoor unit PCB. They are also displayed
on the wired remote controller.
●
Viewing the LED 1 and 2 (D302 and D303) 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.
Example: LED 1 blinks 2 times, then
LED 2 blinks 17 times. The cycle then
repeats. Alarm is “P17”.
Alternating
( : Blinking)
Possible cause of malfunction
Alarm
message
Serial communication errors⁄ Mis-setting
Remote controller
is detecting error
signal from indoor
unit.
Error in receiving serial
communication signal. (Signal
from main indoor unit in case of
group control) Ex: Auto address
is not completed.
<E01>
Error in transmitting serial
communication signal.
<E02>
Indoor unit is detecting error signal from remote
controller (and system controller).
<<E03>>
Indoor unit is
detecting error
signal from main
outdoor unit.
Error in receiving serial
communication signal. When
turning on the power supply,
the number of connected indoor
units does not correspond to
the number set. (Except R.C.
address is “0”.)
E04
Error of the outdoor unit in
receiving serial communication
signal from the indoor unit.
<E06>
Improper setting
of indoor unit or
remote controller.
Indoor unit address setting is
duplicated.
E08
Remote controller address
connector (RCU. ADR) is
duplicated. (Duplication of main
remote controller)
<<E09>>
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”.)
Starting auto address setting is
prohibited.
This alarm message shows that
the auto address connector
CN-A.ADD is shorted while
other RC line is executing auto
address operation.
E12
Error in auto address setting.
(Number of connected indoor
units is less than the number
set)
E15
Error in auto address setting.
(Number of connected indoor
units is more than the number
set)
E16
No indoor unit is connected
during auto address setting.
E20
Main outdoor unit is detecting
error signal from sub outdoor
unit.
E24
Error of outdoor unit address
setting.
E25
The number of connected main
and sub outdoor units do not
correspond to the number set
at main outdoor unit PCB.
E26
Error of sub outdoor unit in
receiving serial communication
signal from main outdoor unit.
E29
Indoor unit
communication
error of group
control wiring.
Error of main indoor unit in
receiving serial communication
signal from sub indoor units.
E18
Possible cause of malfunction
Alarm
message
Serial communication errors⁄ Mis-setting
Improper setting. This alarm message shows
when the indoor unit for
multiple-use is not connected
to the outdoor unit.
L02
Duplication of main indoor
unit address setting in group
control.
<L03>
Duplication of outdoor R.C.
address setting.
L04
There are
2 or more
indoor units
controllers
which have
operation
mode priority
in 1 refrigerant
circuit.
Priority set
remote
controller
L05
Non-priority
set remote
controller
L06
Group control wiring is
connected to individual control
indoor unit.
L07
Indoor unit address is not set. L08
Capacity code of indoor unit is
not set.
<<L09>>
Capacity code of outdoor unit
is not set.
L10
Mis-matched connection of
outdoor units which have
different kinds of refrigerant.
L17
4-way valve operation failure L18
Activation of protective device
Protective device
in outdoor unit is
activated.
Thermal protector in indoor unit
fan motor is activated.
<<P01>>
Improper wiring connections of
ceiling panel.
<<P09>>
Float switch is activated. <<P10>>
Operation of protective function
of fan inverter
<<P12>>
Compressor thermal protector
is activated.
Power supply voltage is
unusual. (The voltage is more
than 260 V or less than 160 V
between L and N phase.)
P02
Protective device
in outdoor unit is
activated.
Incorrect discharge
temperature. (Comp. No. 1)
P03
Power supply circuit failure,
missing-phase detection.
P05
Forgot to open service valve P13
O
2
sensor (detects low oxygen
level) activated.
P14
Compressor running failure
resulting from missing phase
in the compressor wiring, etc.
(Start failure not caused by
IPM or no gas.)
P16
Outdoor unit fan motor is
unusual.
P22
IPM trip (IPM current or
temperature)
H31
Missing-phase/reverse-phase
in the compressor wiring,
Compressor start-up failure
(Overcurrent at time of INV
compressor starts up, etc.)
P29
continued
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Panasonic EAIRC-MJ Series Specifications

General

Brand	Panasonic
Model	EAIRC-MJ Series
Category	Air Conditioner
Language	English