Contents Of Remote Controller Switch Alarm Display - Panasonic U-4LE1E5 Service Manual

1. Contents of Remote Controller Switch Alarm Display

1. Contents of Remote Controller Switch Alarm Display
Remote controller is
Serial
detecting error signal from
communication
indoor unit.
errors
Missetting
Indoor unit is detecting error signal from remote controller (and system controller).
Indoor unit is detecting error
signal from outdoor unit.
Improper setting of indoor unit
or remote controller .
During auto address setting,
number of connected units
does not correspond to
number set.
Indoor unit communication
error of group control wiring
When turning on the power
supply, number of connected
units does not correspond to
number set.
(Except R.C. address is "0.")
5
Improper setting
Protective device in indoor
Activation of
unit is activated.
protective
device
Possible cause of malfunction
Error in receiving serial communication signal
(Signal from main indoor unit in case of group control)
Ex: Auto address is not completed.
Error in transmitting serial communication signal
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.")
Error of the outdoor unit in receiving serial communication signal
from the indoor unit
Indoor unit address setting is duplicated.
Remote controller address connector (RCU. ADR) is duplicated.
(Duplication of main remote controller)
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.
Error of main indoor unit in receiving serial communication signal
from sub indoor units
Error in auto address setting (Number of connected indoor units
is less than the number set.)
Error in auto address setting (Number of connected indoor units
is more than the number set.)
No indoor unit is connected during auto address setting.
Main outdoor unit is detecting error signal from sub outdoor unit.
Error of outdoor unit address setting
The number of connected main and sub outdoor units do not
correspond to the number set at main outdoor unit PCB.
Error of sub outdoor unit in receiving serial communication
signal from main outdoor unit
Outdoor unit serial communications failure.
This alarm message shows when the indoor unit for multiple-use is
not connected to the outdoor unit.
Duplication of main indoor unit address setting in group control
There are 2 or more indoor units
controllers which have operation
mode priority in 1 refrigerant circuit.
Group control wiring is connected to individual control indoor unit.
Indoor unit address is not set.
Capacity code of indoor unit is not set.
4-way valve operation failure
Duplication of outdoor R.C. address setting
Capacity code of outdoor unit is not set.
Thermal protector in indoor unit fan motor is activated.
Improper wiring connections of ceiling panel
Float switch is activated.
Faulty drain pump. Drain pump locked.
Operation of protective function of fan inverter
Operation of O sensor
2
5 - 2
ON:
Priority set remote controller
Non-priority set remote controller
Mini VRF SYSTEM
Mini VRF SYSTEM
Trouble Diagnosis
Trouble Diagnosis
Blinking: OFF:
Wired
Wireless
remote
remote controller
control
receiver display
display
Operating lamp
<E01>
blinking
<E02>
<<E03>>
Heating ready
E04
lamp blinking
<E06>
Operating lamp
E08
blinking
<<E09>>
E12
E18
E15 Heating ready
lamp blinking
E16
E20
E24
E25
E26
E29
E30
L02
Operating and
heating ready
<L03>
lamps blinking
simultaneously
L05
L06
L07
L08
<<L09>>
L18
Operating and
heating ready
L04
lamps blinking
simultaneously
L10
<<P01>>
Timer and heat
<<P09>>
ready lamp
<<P10>>
blinking
<<P11>>
altemately
<<P12>>
P14
Continued