Robertshaw 9720i User Manual download pdf (Page 26)

When should I change the batteries?

Only the model 9700i operates with batteries. The 9701i, 9715i and 9720i operate from power provided by your HVAC system.

Generally the batteries will last 18-24 months. The thermostat will tell you when to change the batteries. A

battery symbol will appear just below the temperature display. The thermostat will continue to operate for a

short period of time with this notification on the display. The low battery warning supercedes all other

notifications including outdoor temperature and the filter monitor.

If the WARNING screen is displayed, the thermostat will shut down all

operations, including heating and cooling. It’s important to change the

batteries promptly if this screen appears.

How do I change the batteries?

Simply slide the battery door to the right. Remove

the two right most batteries first. Then remove the

two left batteries. The screen to the left will

appear. This screen will help you orient the new

batteries. Replace with four fresh AA alkaline

batteries. REPLACEMENT TIP: It’s easier to

replace the two left most batteries first, then the

right ones.

HOLD TEMP

MONDAY 11:30 AM

HEAT

FAN AUTO

SET AT

70.0˚

WARNING: CHANGE

BATTERIES NOW

BATTERIES INSTALLED

INCORRECTLY

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Robertshaw 9720i User Manual Page 26