Lennox 4 Series Installation Manual page 25

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
Compressor Runs
Defrost
Anti-Freezing Protection
IPM Protection
AC Over-current
Protection
Over-burden Protection
Compressor Exhaust High
Temperature Protection
Compressor Overload
Protection
Power Protection
EEPROM Reads and
Writes Protection
Low PN Voltage
Protection
Over Voltage Protection
for PN
PFC Protection
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Indicator Display
Yellow Light Red Light
Flash Once
Flash Twice
Flash 3 Times
Flash 4 Times
Flash 5 Times
Flash 6 Times
Flash 7 Times
Flash 8 Times
Flash 9 Times
Flash 11 Times
Flash 12 Times
Flash 13 Times
Flash 14 Times
LENNOX MULTI SPLIT INVERTER
Green Light
Outdoor Unit
Indoor Display
H1
E2
H5
E5
E8
E4
H3
L9
PL
PH
HC
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