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Honeywell RTH221B Support Question

Honeywell RTH221B Support Question

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Question posted by stevewaski on April 17th, 2012

Problem With Honeywell Rth221b Thermostat

I have a Honeywell RTH221B thermostat. When it is set to cool, the A/C never shuts off regardless of the temperature it is set at. It displayed a 61 degree temp when it was set to 74, yet the compressor was still on. Does anyone have any advice as to how I can repair this problem?

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Related Honeywell RTH221B Manual Pages

Owner's Manual - Page 1

...can have up to four periods in compressor protection Your thermostat has a feature that the temperature is displayed. The message Set Time will appear on the screen and the time display will use Cooling mode when the outdoor temperature is actually taking place (commonly used setting). • On: The fan runs continuously. 1.6 Temperature setting Press the  or  button once...
Owner's Manual - Page 2

.... settings cannot be sent to you wish to the temperature programmed for four seconds while that the defect or malfunction was caused by the consumer. Cool On is opened. E1 appears on the • The temperature sensor circuit is below 32 °F (0 °C). Replace the thermostat. If at any questions concerning this warranty, please write Honeywell...

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