NOTHERM IV T8665A Owner's manual

22 69-1536–3

2. Remove the thermostat by placing your thumb

between the thermostat and wallplate and

pulling the thermostat up and away as shown.

M16424

If you insert new batteries within 20 to 30 seconds of

removing the old batteries, the system retains the

current time and day. If the display is blank, the

batteries are dead or installed incorrectly. You must

reset the time and day. Refer to Setting the Clock

section for instructions.

As a precaution when leaving home for

longer than a month, change batteries

before leaving to prevent the system from

shutting down due to lack of power.

Always use fresh alkaline batteries.

Nonalkaline batteries do not last as long; they also

can leak, causing damage to the thermostat and the

wall surface. Honeywell recommends Energizer®

batteries.