OUT-38
DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
3.2.1 ERROR CODES DISPLAYED ON INDOOR UNITS
Digital Display
1) In case of whatever malfunction, the Digital Display (see above) shows the corresponding
Error Code or Protection Code.
2) Concerning the list of Error Codes and of Protection Codes, and the detailed outline of
each kind of malfunction or of protection function, see the following Table and the following
pages.
Error Codes shown on Display of Multi Liberty HKEU X Indoor Units
Protection Codes shown in Display of Multi Liberty HKEU X Indoor Units
E0
E 1
E2
E3
E5
E6
Error Code
Outline of malfunction
Malfunction of EEPROM parameters.
Communication error between Indoor Unit ↔ Outdoor Unit.
Transmission error of data sequence along signal line.
Malfunction of fan motor (beyond control) on Indoor Unit.
Malfunction of temperature sensor (broken or in short circuit) on Outdoor Unit.
Malfunction of temperature sensor T1 or T2 (Indoor Unit).
P0
P1
p2
Protection Code
Outline of Protection function
Overcurrent on Inverter Module (Outdoor Unit).
Power supply voltage error (too low/too high voltage) on Outdoor Unit.
Intervention of compressor’s thermal protection.
[Excluded Outdoor Units HCKU 816 X4, HCKU1066 X4]
p4
Protection intervention on Inverter Module (IPM).
p3
Protection intervention for compressor overcurrent.
p5
Conflict between operation modes of Indoor Units.
Digital Display
• Error Codes on Display of Multi Liberty HKEU X Indoor Units