Honeywell TH8000 Series Owner's Manual page 20

Honeywell th8000 series programmable thermostats owner's guide
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1. Remove thermostat from the base by pulling straight out.
WALL
M19919
2. Install three new AAA alkaline batteries so all positive ends alternate up, down, up.
NOTE: Always use AAA alkaline batteries.
20
69-1701

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