Operation Manual
Page 23
... 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 restart safely, without damage to respond. Wait 5 minutes for the system to the compressor (see...In case of Difficulty section in your thermostat Installation Guide. 21 69-2211EF-05 Make sure the temperature is engaged. Other problems • If the above measures do not resolve the problem, check the In Case of difficulty RTH6400 Programmable Thermostat Heating or cooling • Press SYSTEM...
... 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 restart safely, without damage to respond. Wait 5 minutes for the system to the compressor (see...In case of Difficulty section in your thermostat Installation Guide. 21 69-2211EF-05 Make sure the temperature is engaged. Other problems • If the above measures do not resolve the problem, check the In Case of difficulty RTH6400 Programmable Thermostat Heating or cooling • Press SYSTEM...