Lennox 11U61 Setup And Installation Manual page 35

HOMEOWNER SERVICE ALERT CODES
Number Value Number
3000 Filter 1 3002
3001 Filter 2 3003
Value Number Value
Humidifier 3004 Maintenance
Pad
UV Light 3005 PureAir Main­
tenance
Number Value
4000 User Wi-Fi state
change, disable
4001 Firmware download
failed
7-Day Programmable iComfort Wi‐Fi
35
Number Value
4002 Image file down­
load failed
®
Flex Thermostat