Panasonic R410A - 5-1. Contents of Remote Controller Switch Alarm Display

5-2
5
5-1. Contents of Remote Controller Switch Alarm Display
Contents of Alarm Display on Remote Controller (only Outdoor Unit)
Wired
remote
controller
display
Wireless remote
controller lamp
display
Cause Correction
Outdoor unit failed to receive serial
communication signals from indoor unit
Check inter-unit control wiring
Check outdoor HIC PCB
Faulty cooling of heat sink
Refrigerant cycle abnormal overload operation
Check discharge temperature sensor
Check inter-unit control wiring
Check indoor and outdoor unit control PCB
Check indoor unit combination
Check inter-unit control wiring
Check inter-unit control wiring
Check inter-unit control wiring
Check indoor and outdoor unit control PCB
Check inter-unit control wiring
Check indoor and outdoor unit control PCB
Check inter-unit control wiring
Check indoor and outdoor unit control PCB
Check inter-unit control wiring
Check indoor and outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit control PCB wiring
Check outdoor unit control PCB (HIC/CR)
Check outdoor unit system address
Check indoor and outdoor units PCB
Check AC power supply
Check AC power supply
Check outdoor unit control PCB
Check outdoor unit control PCB
Check outdoor unit EEPROM
Check outdoor unit EEPROM
Check indoor unit EEPROM
Check indoor and outdoor unit control PCB
Outdoor unit sending failure to indoor unit
Automatic address alarm
（capacity too low）
Automatic address alarm
（capacity too high）
No indoor units connected
Alternately
Alternately
Simultaneously
Simultaneously
Automatic address setting start is prohibited
while auto-address setting in progress.
Main unit duplication in simultaneous-operation
multi control (detected outdoor unit)
Compressor discharge temperature
sensor (TD) trouble
Sensor failure, Compressor discharge
temperature sensor (TD) disconnected
Check compressor discharge temperature
sensor (TD)
Compressor discharge temperature trouble
High pressure trouble
Compressor inlet suction temperature
sensor (TS) trouble
Check compressor suction temperature sensor (TS)
Compressor lock
Check outdoor control PCB
Check compressor locked up
Valve blockage
Check 4-way valve wiring
Check outdoor unit control PCB
Check wiring between outdoor control PCB
and outdoor HIC PCB (CN-RELAY)
Check refrigerant cycle (gas leak)
Trouble with electronic expansion valve
Check discharge temperature sensor
Check refrigerant cycle
Valve blockage
Heat exchanger obstruction
Outdoor air temperature sensor (TO) trouble
Check outdoor unit air temperature sensor (TO)
Inlet temperature sensor (C1) in heat
exchanger trouble
Check outdoor unit heat exchanger
temperature sensor (C1)
Screws connecting HIC circuit between
heat sink are loose.
Check outdoor unit heat exchanger
temperature sensor (C2)
Outdoor unit nonvolatile memory
(EEPROM) trouble
Primary (input) overcurrent detected
PAM trouble
HIC trouble
Outdoor unit address duplication
Outdoor unit capacity not set
Indoor unit type setting error
4-way valve operation failure
Primary current CT sensor
(current sensor) failure
Intermediate temperature (C2) in heat
exchanger trouble
Operation
Preparing
Timer
E06
E07
E12
E14
E15
E16
E20
F04
F06
F07
F08
F12
F31
H01
H02
H03
H05
H31
L04
L10
L13
L18
P03
P04
Check 4-way valve
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