Smart temp 42158 - Continuous Operation & Error Messages; Manual Operation Instructions Reference

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7. My system continues to operate when the
thermostat is in the off position.
7 a. Replace unit.
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8. The LCD screen permanently reads HI, LO,
or ERR.
8 a. Replace unit.
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9. How do I just operate my thermostat
manually?
9 a. Manual operation instructions are on pages 28-31.
TROUBLESHOOTING