User manual

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40
Troubleshooting for technician
The display
is blank
Check the thermostat for 24 VAC,
remove the front cover and test between Rc/Rh to C
Check for good wiring connections at:
Rh (24 VAC for heat), Rc (24 VAC for cool), C (common)
If you are using one transformer for cool and heat, check
that the jumper is installed between Rc and Rh.
Check that all screws terminals are tight
Problem Solution