Honeywell RTH221B Support and Manuals
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Most Recent Honeywell RTH221B Questions
System Display Shows Off Not Able Change.
thermastat is on batteries are good. System display shows off but we can't change to show air or hea...
thermastat is on batteries are good. System display shows off but we can't change to show air or hea...
(Posted by Kcalamia 4 years ago)
Reset My Rth221b Thermostat
How Do I Reset My Honeywell Rth221b Thermostat
How Do I Reset My Honeywell Rth221b Thermostat
(Posted by Anonymous-165037 5 years ago)
Just Moved Into This House And Have No Idea How To Set The Thermostat
L
L
(Posted by ramoncarlos45 8 years ago)
My Return Keeps Flashing On My Honeywell Rth221 Why?
(Posted by Dmiller74760 9 years ago)
Popular Honeywell RTH221B Manual Pages
Owner's Manual - Page 1
... appear for 60 seconds.) NOTE: The clock has lost its two temperature settings (one when the thermostat is in cooling mode and another one when it will use Cooling mode when...is flashing, this feature forces the compressor to display the setpoint temperature.
RTH221
RTH221
User Guide
Programmable Thermostat
1.5 Fan switch
Use the Fan switch to select the fan operation.
• Auto:...
Owner's Manual - Page 2
... warranty period the product is determined to set the temperature. Press the Set button.
Screen is blank. • Ensure two fresh AAA alkaline batteries are removed. Cooling will be away for more than a month.
Replace the thermostat. Replace the thermostat. If at any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr, Golden...
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