Orbit 83521 User Manual page 21

TROUBLESHOOTING
Problem: Temperature does not change at programmed start time for a given period
Solution:
1. Verify that the HOLD feature is not active (see "Overriding the Schedules Permanently,"
page 27).
2. Check the programmed schedule (see "Modifying the Programmed Schedule," page 24).
3. Verify that the thermostat is not in MANUAL mode (see "Turning Off Schedules," page 28).
Problem: Heat/cool system doesn't respond immediately
Solution:
1. To protect your compressor, the thermostat default is to wait five minutes before responding.
(see "Minimum Cycle Period Adjustment," page 18).
2. If the problem persists after waiting five minutes, check batteries.
Replace if necessary (see "Replacing the Batteries," page 31).
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Problem:
Set temperature is 10°F above (in cool mode) or 10°F below (in heat mode) desired temperature
Solution: Check batteries. Replace if necessary (see "Replacing the Batteries," page 31).
Problem: System turns on too frequently
Solution: The Orbit Clear Comfort™ Pro thermostat uses smart logic to turn on once every
cycle period to maximize comfort and temperature stability. To adjust the cycle period, see
"Minimum Cycle Period Adjustment," page 18. To turn off smart logic, set the cycle period back
to the default setting of 0.
Problem: Display is blank/Low Battery Indicator on
Solution:
1. Replace batteries (see "Replacing the Batteries," page 31).
2. Check for loose or crossed wiring in thermostat wiring terminal.
TROUBLESHOOTING
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