Honeywell CT2700 Owner's Manual - Page 7

CT2700 AN ELECTRONIC ROUND ™ PROGRAMMABLE THERMOSTAT c. After the thermostat reverts back to TEMPORARY AM displaying room temperature (approximately five seconds), simultaneously press and keys and hold for three seconds. Release the keys after the display changes. d. Press within five seconds. The display changes to show current cycle rate setting. 2. Cycles Per Hour a. Use or to select 1, 3, 6, or 9 cycles per hour (cph). Refer to Table 3. Table 3. Heating Cycle Rates System Program Setting (cph) Gas or oil forced air 6 Electric furnace 9 Hotwater baseboard, High 3 efficiency (90+) gas furnace Steam, radiant floor heat, 1 gravity b. Press to display the current °F or °C setting. 3. Fahrenheit - Celsius Temperature a. Use or to choose between °C and °F. b. Press to display the current 12- or 24-hour clock setting. 4. Clock Format a. Use or to choose either a 12- or 24hour clock format. Press once to exit the Installer Setup. Upon exiting, the temperature setting will be at 52°F (11°C). Pressing six times returns the thermostat to the normal operational mode. End appears in the display. 5. Slide system switch to desired position. TROUBLESHOOT YOUR THERMOSTAT Symptom Possible Cause Corrective Action Heating/cooling equipment will not operate No AC power to thermostat. Check power to heating/cooling equipment: - On/Off switch - Fuse or circuit breaker - Loose 24V connection: At thermostat; at furnace/air conditioner - Incorrect wiring: check appropriate wiring diagram. Thermostat inoperative. See checkout section. System switch on thermostat in wrong position. Reset System switch. Thermostat minimum-off Wait five minutes or follow steps in Checkout section. times operating for cooling. Incorrect wiring. Check wiring. Heating/cooling equipment inoperative. Consult equipment manufacturer instructions. Partial display Inoperative thermostat. Still in installer setup mode. Replace thermostat. See Installer Setup section for exit instructions. No display Temperature display is incorrect Cannot change temperature setting No power to thermostat. Thermostat mounted incorrectly on wallplate. Thermostat is configured for °F or °C. The upper or lower temperature limits were reached. Check power to thermostat. See installation instructions for correct mounting. Reconfigure the display. See Installer Setup section for instructions to change the display. Check the temperature setpoints; temperature setting range is 40°F (4°C) to 99°F (37°C). 7 69-1085