Contents Of Remote Controller Switch Alarm Display - Panasonic U-8ME1E8E Service Manual

1. Contents of Remote Controller
Switch Alarm Display
Serial Remote controller is detecting
communication error signal from indoor unit.
errors
Mis-setting
Indoor unit is detecting error signal from remote controller and system controller.
Indoor unit is detecting error
signal from outdoor unit.
Outdoor unit is detecting error
signal from indoor unit.
Improper setting
Improper setting
Indoor unit communication
error of group control wiring.
During auto. address setting,
number of connected units
does not correspond to
number set.
Improper setting
6
Thermistor Indoor unit
fault
Possible cause of malfunction
Error in receiving serial communication signal. (Signal from
main indoor unit in case of group control) Outdoor system
address, indoor unit address, or indoor unit address
independent/main/sub unit setting has not been made.
(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.")
• Group wiring failure of indoor units in the refrigerant system
(occurring when remote controller is operated immediately
after automatic address setting)
• Error in receiving serial communication signal.
• There is an indoor unit which does not send signals when
the power is ON.
• Indoor unit address setting is duplicated.
• Duplicated remote controller "main" setting.
Automatic address setting start is prohibited.
AP pin was short-circuited at time when automatic address
setting was started.
Error of main indoor unit in receiving serial communication
signal from sub indoor units.
Number of connected indoor units is less than the number set.
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.
Duplicated outdoor unit address.
Mismatch in "No. of outdoor units" setting.
Error of sub outdoor unit in receiving serial communication
signal from main outdoor unit.
Outdoor unit serial communications failure.
Communication error between the microcomputers
Connected indoor unit is not a multi unit.
Duplication of main indoor unit address setting in group control.
Duplicated indoor unit priority (priority indoor unit).
Duplicated indoor unit priority (non-priority indoor unit) and
outdoor unit.
Indoor unit address is not set.
Capacity code of indoor unit is not set.
Mismatch of outdoor unit type.
4-way valve operation failure
Duplication of outdoor R.C. address setting.
Capacity code of outdoor unit is not set.
Group control wiring is connected to individual control indoor unit.
Indoor coil temp. sensor (E1)
Indoor coil temp. sensor (E3)
Indoor suction air (room) temp. sensor
Indoor discharge air temp. sensor
6 - 2
2WAY SYSTEM
Trouble Diagnosis
ON: Blinking: OFF:
Wired
Wireless
remote
remote controller
control
receiver display
display
Operating lamp
<E01>
blinking
<E02>
<<E03>>
E04 Heating ready lamp
blinking
E 0 6
< < E 0 8 > >
< < E 0 9 > >
Operating lamp
blinking
E12
E18
E15
E16
E20
Heating ready lamp
blinking
E24
E 2 5
E 2 6
E29
E30
E31
< < L 0 2 > >
<L03>
L05
Operating and heating
ready lamps blinking
L06
simultaneously
L 0 8
< < L 0 9 > >
L17
L18
L04
Operating and heating
ready lamps blinking
L10 simultaneously
L07
< < F 0 1 > >
Operating and
timer lamps blinking
< < F 0 3 > >
alternately
< < F 1 0 > >
< < F 1 1 > >
Continued