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TROUBLESHOOTING
Problem
Solution
System continues to op-
erate in the Off position
1. Replace thermostat.
1. Replace thermostat.
Thermostat permanently
reads “HI”, “LO” or “E1”
after pressing the Reset
button
If you experience any other problems with your CTC thermostat, call CTC Technical Support
at 1-800-676-7861 from 8am to 5pm Central Time.
WIRING DIAGRAM