Manual Honeywell Chronotherm III - 69-0690 (page 15 of 30) (English)

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MAINTAINING YOUR THERMOSTAT

REPLACING THE BATTERIES

Your thermostat uses three AAA alkaline batteries. The

display will flash REPL BAT when the batteries get low.

You won’t have to reprogram the thermostat if you

insert the new batteries 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 21.

■ Lift the batteries out of the holder.

■ Insert the new batteries, making sure the positive (+)

terminals all face toward the right.

■ Replace the thermostat on the wall. See page 22.

■ Reprogram, if necessary.

M5065

POWER OUTAGES

Backup batteries will hold the programming and keep

on the display 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 were not

installed. When power is restored, the display will flash

1:00 PM to remind you to reprogram. If the colon is not

flashing, there is no AC power or the thermostat is not

properly connected to the subbase.

the Thermastat iss completely dark and furnace not working
Submitted on 8-2-2020 at 15:43
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Honeywell Chronotherm III - 69-0690 Manual

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