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Heating or
cooling system
does not respond
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• Wait 5 minutes for the system to respond.
In case of difficulty
Screen displays
“No Signal”
Thermostat has lost radio contact with the wireless network (usually
because of a power outage). To restore power:
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
After power is restored, the thermostat will automatically restore wireless
communication within a few minutes.