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8.1. Error Codes
• The error code will be displayed on the wired controller and the main board of the outdoor unit. A
list of error codes is shown in Table 13.
Table 13: Error Codes
Malfunction Indicator Display Indoor Display
Yellow Light Red Light Green Light
Compressor Runs Flash Once
Defrost Flash Twice H1
Anti-Freezing Protection Flash 3 Times E2
IPM Protection Flash 4 Times H5
AC Over-current
Protection
Flash 5 Times E5
Over-burden Protection Flash 6 Times E8
Compressor Exhaust High
Temperature Protection
Flash 7 Times E4
Compressor Overload
Protection
Flash 8 Times H3
Power Protection Flash 9 Times L9
EEPROM Reads and
Writes Protection
Flash 11 Times
Low PN Voltage
Protection
Flash 12 Times PL
Over Voltage Protection
for PN
Flash 13 Times PH
PFC Protection Flash 14 Times HC
13 23 50 | lennoxaus.com.au
LENNOX MULTI SPLIT INVERTER
Outdoor Unit
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