Contents Of Remote Controller Switch Alarm Display - Panasonic U-4LE2E5 Service Manual & Test Run Service Manual

1. Contents of Remote Controller
1. Contents of Remote Controller
Switch Alarm Display
Switch Alarm Display
Serial Remote controller is detecting
communication error signal from indoor unit.
errors
Miss-setting
Remote controller does not respond to indoor unit.
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 fault Indoor unit
Thermistor fault Outdoor unit
Possible cause of malfunction
Remote controller is not connected properly. (Receiving failure
from remote control)
Indoor unit address was mistakenly controlled by undesired
indoor unit remote controller.
(Impossible to communicate with outdoor unit)
Remote controller is not connected properly.
(Impossible to communicate with indoor unit by remote
controller)
Outdoor unit does not respond to indoor unit.
Some indoor units do not respond to outdoor unit.
Indoor unit address is dupulicating.
Two or more remote controllers are set as main on R1-R2 link.
Auto Address failed to start.
No response from sub indoor to the main indoor unit in group
control wiring.
Fewer indoor units are found in Auto Addressing than the
setting on outdoor PCB.
More indoor units are found in Auto Addressing than the setting
on outdoor PCB.
No indoor unit responded in Auto Addressing.
Indoor unit model does not match with the outdoor unit model.
(Multi-split/mini-split)
Two or more indoor units are set as main in group control.
Two or more indoor units are set as priority indoor unit
(priority indoor unit).
Two or more indoor units are set as priority indoor unit
(non-priority indoor unit).
Group control wiring is detected for indoor unit set as individual
control.
Indoor unit address is not set.
Capacity setting of indoor unit is not correct.
Duplicate system address setting on outdoor units.
Capacity setting of outdoor unit is not correct.
4-way valve has failure.
Indoor unit heat exchanger liquid temperature sensor has
failure. (E1)
Indoor unit heat exchanger gas temperature sensor has
failure. (E3)
Indoor suction air (room) temperature sensor has failure. (TA)
Indoor discharge air temperature sensor has failure. (BL)
Compressor discharge temperature sensor has failure.
(DISCH)
Outdoor unit heat exchanger gas temperature sensor has
failure. (EXG)
Outdoor unit heat exchanger liquid temperature sensor has
failure. (EXL)
Outdoor temperature sensor has failure. (TO)
6 - 2
2WAY SYSTEM
Mini VRF SYSTEM
Trouble Diagnosis
Trouble Diagnosis
ON: Blinking: OFF:
Wired
Wireless
remote
remote controller
control
receiver display
display
<E01>
Operating lamp
blinking
<E02>
<<E03>>
Heating ready lamp
E04
blinking
<E06>
E08
Operating lamp
<<E09>>
blinking
E12
E18
E15
Heating ready lamp
blinking
E16
E20
<<L02>>
<L03>
Operating and heating
L05
ready lamps blinking
simultaneously
L06
L07
L08
<<L09>>
L04
Operating and heating
ready lamps blinking
simultaneously
L10
L18
<<F01>>
Operating and
timer lamps blinking
<<F03>>
alternately
<<F10>>
<<F11>>
F04
Operating and timer
F06
lamps blinking
alternately
F07
F08
Continued