Troubleshooting
74
1.3 Error Description
,IVRPHHUURURFFXUVZKHQWKHXQLWLVUXQQLQJWKHHUURUFRGHZLOOEHGLVSOD\HGRQWKHZLUHGFRQWUROOHUDQGWKHPDLQERDUG
of
WKHRXWGRRUXQLW6HHWKHWDEOHEHIRUHIRUPRUHGHWDLOVDERXWWKHPHDQLQJRIHDFKHUURU
Error & Status Display List
Indoor Unit
(Floor/
Ceiling)
88 Display
Wired
Controler
Display
Indoor
and/or
Outdoor
Unit Error
Errors of Commercial
Air Conditioners
Outdoor
Unit 88
Display
Indicating LED Flashing Times
Running LED
Cooling LED
Heating
LED
Defrosting Mode 1
08
/
/
/
/
/
Outdoor
Defrosting Mode 2
0A
/
/
/
/
/
Outdoor
Whole Unit Running Normally
ON
/
/
/
/
/
Outdoor
(Liquid Valve) Inlet Tube
Temp Sensor Error
See Table 2
/
Flash 19 times
/
b5
B5
Outdoor
(Air Valve) Outlet Tube
Temp Sensor Error
See Table 2
/
Flash 22 times
/
b7
B7
Outdoor
/
F0
/
Flash 10 times
/
F0
F0
Outdoor
Indoor Ambient Temp.
Sensor Short/Open-Circuit
See Table 2
/
Flash once
/
F1
F1
Indoor
Indoor Evaporator Temp
Sensor Short/Open-Circuit
See Table 2
/
Flash twice
/
F2
F2
Indoor
Outdoor Ambient Temp
Sensor Error
F3
/
Flash 3 times
/
F3
F3
Outdoor
Outdoor Mid-Coil
Temp Sensor Error
F4
/
Flash 4 times
/
F4
F4
Outdoor
Outdoor Discharge Air
Temp Sensor Error
F5
/
Flash 5 times
/
F5
F5
Outdoor
Oil Return for Cooling
F7
/
/
/
/
/
Outdoor
High Pressure Protection
E1
Flash once
/
/
E1
E1
Outdoor
Shutdown for Whole Unit
Anti-Freeze Protection
E2
Flash twice
/
/
E2
E2
Indoor
Low Pressure Protection
E3
Flash 3 times
/
/
E3
E3
Outdoor
High Discharge Temp Protection
E4
Flash 4 times
/
/
E4
E4
Outdoor
Communication Error
See Table 2
Flash 6 times
/
/
E6
E6
Outdoor
& Indoor
0RGH&RQÀLFW
See Table 2
Flash 7 times
/
/
E7
E7
Indoor
Overload Protection
E8
Flash 8 times
/
/
E8
E8
Outdoor
/
E9
/
/
/
/
/
Indoor
Indoor Unit Water Full Error
/
Flashing
Flashing
E9
E9
Indoor
Trial Run
dd
Quick Flashing
Quick Flashing
Quick Flashing
dd
dd
Outdoor
Refrigerant Recovery Mode
Fo
Quick Flashing
Quick Flashing
/
Fo
Fo
Outdoor
IPM Reset
P0
Flash 3 times
Flash 3 times
Flash 3 times
P0
P0
Outdoor
Compressor Current Protection
P5
/
/
Flash 15 times
P5
P5
Outdoor
Communication Error
between the Inverter Drive
and the Main Controller
P6
Flash 16 times
/
/
P6
P6
Outdoor
Radiator Temp Sensor Error
P7
/
/
Flash 18 times
P7
P7
Outdoor
Radiator Overheat Protection
P8
/
/
Flash 19 times
P8
P8
Outdoor
AC Contactor Protection
P9
Flash 3 times
Flash 3 times
Flash 3 times
P9
P9
Outdoor
Current Sensor Error
Pc
Flash 3 times
Flash 3 times
Flash 3 times
Pc
Pc
Outdoor
Sensor Connection Protection
Pd
Flash 3 times
Flash 3 times
Flash 3 times
Pd
Pd
Outdoor