Replace Batteries - Honeywell RTH5100 Operating Instructions Manual

1. When the Replace Battery indicator is flashing,
replace batteries promptly with two fresh
AAA alkaline batteries.
The thermostat does not lose any settings
when the batteries are replaced; all settings
are permanently stored in memory.

Replace Batteries

REPLACE BATTERY INDICATOR
Replace Batt
Service Needed
Fan System
Auto
9
Cool
M22015
69-1722