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RTH2510/RTH2410
21 69-2725ES—01
Temperature
settings do not
change
Make sure heating and cooling temperatures are set to acceptable ranges:
• Heat:40°to90°F(4.5°to32°C).
• Cool:50°to99°F(10°to37°C).
“Cool On” or
“Heat On” is
flashing
• Compressor protection feature is engaged. Wait 5 minutes for the system to
restart safely, without damage to the compressor (see page 15).
“Heat On” is not
displayed
• Set the System switch to Heat, and set the temperature level above the
current room temperature (see page 7).
“Cool On” is not
displayed
• Set the System switch to Cool, and set the temperature level below the
current room temperature (see page 7).
In case of difficulty
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