III–4
: Flashing : Lit : Off
Detection Item
Warning
Display
Wireless Remote Control
Lamp Display
Device
Checked
Indoor unit ceiling panel connector connection failure P09
Operating
Timer
Wait...
Alternate flashing
Indoor unit
Protective device operation
Indoor protection
devices
Indoor fan error / indoor fan rpm error P01
Indoor unit fl oat switch operation P10
Indoor DC fan error P12
Outdoor protection
devices
High compressor discharge temperature P03
Operating
Timer
Wait...
Alternate flashing
Outdoor unit
Refrigerant high-pressure switch
operation
P04
Power source error P05
Refrigerant circuit error
(for only W MULTI and 3WAY MULTI)
P13
O
2
sensor operation P14
Complete refrigerant gas depletion P15
Bypass valve error P18
4-way valve lock error
(not detected 3WAY MULTI)
P19
Refrigerant high-pressure error P20
Outdoor fan error P22
Clutch connection error P26
Group control’s sub unit error (system controller) P30
System
controller
Group control error (alarm) P31 Indoor unit
Oil change time (level) alarm
Outdoor display: oiL
Oil check
Outdoor unitAutomatic backup operation (*2) check
Backup operating display without power generation when the
converter is abnomal
GE
When the water heat exchanger unit is connected in the table above, please replace indoor unit with water
heat exchanger unit for the alarm.
Note: Some items are not indicated, depending in model.
*1: If the indoor nonvolatile memory (EEPROM) is faulty when the power supply is turned on, Alarm code F29 is not indicated,
but the power source LED on the indoor board starts to fl icker.
*2: In this case, operation of the system is possible, but one of the outdoor units is detected to have stopped abnormally.
● Alarm P30 (group controlled device fault) is sometimes displayed at the system controller.
GHPtroubleshooting.indbIII‒4GHPtroubleshooting.indbIII‒4 2012/11/2611:20:042012/11/2611:20:04