On the indoor panel...hold down the alert button until you hear 2 beeps and see up/down arrows displayed on front (bottom). Use the up/down buttons on the front until you get F instead of C. Push the alert button again so the up/down arrows disappear on the front panel.
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On the indoor panel...hold down the alert button until you hear 2 beeps and see up/down arrows displayed on front (bottom). Use the up/down buttons on the front until you get F instead of C. Push the alert button again so the up/down arrows disappear on the front panel.