Panasonic Inverter R32 Series Technical Data & Service Manual page 252

ON: Blinking: OFF:
Wireless remote
controller
receiver display
Abnormal
display
• Disconnection / Contact failure of inter-unit wiring
Standby lamp • Disconnection of inter-unit wiring
blinking
• Communication circuit fuse (F302) on indoor unit control
E06
• Indoor unit control PCB address settings error
• Auto address setting start is prohibited
E12 Operating lamp
blinking
• Duplication of main unit in group control
E14
E15
Automatic
Standby lamp
address
E16 blinking
alarm
E20
• Outdoor unit communication error
E24
• Outdoor unit communication error
E29
• Compressor discharge temperature sensor (TD) trouble
F04
• Outdoor heat exchanger temperature sensor (C1)
F06 Operating
and timer
lamp blinking
• Outdoor heat exchanger temperature sensor (C2)
alternately
F07
F08 • Outdoor air temperature sensor (TO) trouble
• Compressor suction temperature sensor (TS) trouble
F12
Operating
and timer
lamp blinking
F31 • Outdoor unit EEPROM trouble
alternately
H01 • Primary (input) overcurrent detected
Timer lamp
H02 • PAM trouble
blinking
H03 • Primary current CT sensor failure
• HIC trouble
H31
• DC voltage not detected
• Duplication of outdoor unit address
L04
• Outdoor unit capacity is not set or setting error
Operating
L10
and standby
lamps blinking
• Indoor unit type setting error
L13
simultaneously
• Type of indoor/outdoor units is different
L18 • 4-way valve locked trouble / operation failure
P03 • Compressor discharge temperature trouble
Operating
and standby
lamp blinking
• Compressor discharge pressure trouble
P04
alternately
• Open phase detected
P05
• AC power supply trouble
Alarm contents
PCB opened
• The total capacity of indoor units are too
low
• The total capacity of indoor units are too
high
• The number of indoor units is two or more
• No indoor unit connected
trouble
trouble
• Correct the inter-unit control wiring
Check the electrical connection of fuse (F302) on indoor
unit control PCB
In the case of the fuse opened on an indoor unit control
PCB, after correcting wiring connection, it substitutes an
EMG plug for OC plug
• Indoor unit address re-setting
• Check the inter-unit control wiring
• Check the inter-unit control wiring
• Check the indoor unit combination
• Check the inter-unit control wiring
• Check the indoor and outdoor unit control PCB
• Check the outdoor unit control PCB
• Check the outdoor unit control PCB
• Check the compressor discharge temperature sensor (TD)
• Check the outdoor unit control PCB
• Check the outdoor unit heat exchanger temperature
sensor (C1)
• Check the outdoor unit control PCB
• Check the outdoor unit heat exchanger temperature
sensor (C2)
• Check the outdoor unit control PCB
• Check the outdoor air temperature sensor (TO)
• Check the outdoor unit control PCB
• Check the compressor suction temperature sensor (TS)
• Check the outdoor unit control PCB
• Check the outdoor unit EEPROM
• Check the outdoor unit control PCB
• Check the refrigerant cycle (abnormal overload operation)
• Check the outdoor unit control PCB
• Check the power supply
• Check the outdoor unit control PCB
• Compressor locked
• Check the power supply
• Check the outdoor unit control PCB
• Check the outdoor unit control PCB
• Check the HIC
• Compressor locked
• Valve blockage
• Check the inter-unit control wiring
• Replace the outdoor unit EEPROM
• Capacity value re-setting
• Replace the indoor unit EEPROM
• Check the outdoor unit control PCB
• Check the type of IU and OU, and re-set address
• Check the 4-way valve
• Check the 4-way valve wiring
• Check the outdoor unit control PCB
• Check the refrigerant cycle (gas leak)
• Trouble with the electronic expansion valve
• Check the discharge temperature sensor (TD)
• Check the refrigerant cycle
• Valve blockage
• Heat exchanger obstruction
• Check the power supply
• Check the reactor wiring
• Check the outdoor unit control PCB
• Check the compressor wiring
2-11
Error location
2