Honeywell T8611 Owner's Manual - Page 16

REMOVI' FRIES A3 AAA misplay will ,nen the bat- ,tless the display ;ating the batteries , Nhen you start, You ,ave to reprogram the ..mostat if you insert the new &eries within 20-30 seconds of taking out the old ones. To replace: , Set the system switch to OFF. . Remove the thermostat from the wall. See page 25. n Lift the batteries out Of the holder. n Insert the new batteries, making sure the positive (+) terminals all face toward the right. n Replace the thermostat on the wall. See page 26. n Reprogram, if necessary POWER OUTAGES Backup batteries will hold the programming and keep the display on during most power outages. Once the power is restored, the system will resume normal operation. If the display goes off when power is lost, either the backup batteries need to be replaced or are not installed. When power is restored, the display will flash I:00 PM to remind you to reprogram. 28