Honeywell RTH8500D Owner's Manual page 49

Permanent Hold
Permanent Hold changes the temperature setting until Permanent
Hold is cancelled.
1. Press the Hold key. "Permanent Hold" appears on the screen.
2. Press the Up or Down arrow next to the temperature you want
to set during "Hold."
SYSTEM
3. Press the Cancel key to cancel "Permanent Hold" and resume
the schedule.
The screen shows Permanent Hold until it is cancelled.
Set Temperature Overrides (Cont)
TUE
FAN
Inside
AUTO
HEAT
Permanent
Hold
SCHED HOLD
Set To
AM
CLOCK SCREEN
49
CANCEL
M19960
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