Honeywell RTHL3550 - Key Features and Maintenance; Built-in Compressor Protection; Battery Replacement

Advanced Installation Guide
69 -2584ES — 01 12
SETUPWIRINGASSISTANCETROUBLESHOOTING
MCR32600
Done Next
MCR32601
Press and hold the s and FAN buttons until the screen
changes (approximately 5 seconds).
System setup
SettingFunction
Press s or t to change settings.
Press NEXT to advance
to next function.
Press DONE to exit
and save settings.