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manual abstract
14. Display of test number. Refer to Table 5 for the directions and results of the specific tests. NOTE: Press Time . to advance to the next test and Time . to go back to the previous test. Press Run Program to exit the System Test 69-1510-4 8 T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS Keys toPress Test Number Description Heating Equipment System Test Time . 10 Enter heating equipment system test. .. 11 Heat comes on. When Installer Setup number 2 is 1, the system fan is also energized. .. 10 Heat and system fan turn off. Cooling Equipment System Test Time . 30 Change from heating to cooling equipment system test. .. 31 Cool and system fan come on. .. 30 Cool and system fan turn off. Fan Equipment System Test Time . 40 Change from cooling to fan equipment system test. .. 41 Fan comes on. .. 40 Fan turns off. Key Operation System Test Time . 60 2 Change from fan to key operation system test. NOTE: Press any key and the displayed numbers will change. Press Time . to go to the previous test and Time . to go to the next test. The Run Program key does not exit this test. Press Time . or Time . and then the Run Program key to exit. 9 69-1510-4 T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS . Press the increase .. key again to display the soft- THERMOSTAT INFORMATION ware revision number. (Example: 001 = Revision number 1). 1. Press the Time . key to access the thermostat information. M14613 2. Press the increase .. key to display the production date code. The first two large digits are the month and the third digit is the last digit of the year. (Example: 027 = February 1997). M14614 3. Press the increase .. key again to display the software identification code. (Example: 02 = software ID code 2). M14615 M14616 5. Press the increase .. key again to display the EEPROM identification code. (Example: 314 = EEPROM ID 314). M14617 6. Press the Run Program key to exit the system test. The system test times out after four minutes without any key presses. CHECKOUT Outdoor Temperature Sensor (Select Models) Allow the outdoor temperature sensor to absorb the outdoor air for a minimum of five minutes before taking a reading. 69-1510-4 10 T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS Table 6. Troubleshooting Guide. Symptom Possible Cause Action Display will not come on. Thermostat is not being powered. • Check if batteries are present and installed correctly. — If batteries are present and installed correctly, replace thermostat. Temperature display is incorrect. Room temperature display has been reconfigured. Enter Installer Setup number 37 and reconfigure the display. Thermostat is configured for °F or °C display. Enter Installer Setup number 14 and reconfigure the display. Bad thermostat location. Relocate the thermostat. Temperature settings will not change. (Example: Cannot set the heating higher or the cooling lower.) The upper or lower temperature limits were reached. Check the temperature setpoint: • Heating limits are 4.5 to 32°C • Cooling limits are 7 to 37°C The setpoint temperature range stops were configured. Check Installer Setup numbers 34 and 35 and reconfigure the setpoint stops. Heating will not come on. No power to the thermostat. • Check for 24 Vac between R and W terminals (check for 750 mV on PowerPile® Systems). — If missing 24 Vac: — check if the circuit breaker is tripped—reset the circuit breaker. — check if the system fuse is blown—replace the fuse. — check if the power switch on the HVAC equipment is in the Off position—set to the On position. — check wiring between thermostat and HVAC equipment—replace any broken wires and tighten any loose connections. — If 24 Vac is present, proceed with troubleshooting. Thermostat minimum off time is activated. Wait up to five minutes for the system to respond. System selection is not set to Heat. Set system selection to Heat. Heating setpoint is below room temperature. Check heating setpoint. Set heating setpoint to desired temperature. Cooling will not come on. No power to the thermostat. • Check for 24 Vac between R or RC and Y terminals — If missing 24 Vac: — check if the circuit breaker is tripped—reset the circuit breaker. — check if the system fuse is blown—replace the fuse. — check if the power switch on the HVAC equipment is in the Off position—set to the On position. — check wiring between thermostat and HVAC equipment—replace any broken wires and tighten any loose connections. — If 24 Vac is present, proceed with troubleshooting. Thermostat minimum off time is activated. • Wait up to five minutes for the system to respond. • Enter Installer Setup number 33. Reconfigure minimum off time (if required). System selection is not set to Cool. Set system selection to Cool. Cool setpoint is above room temperature. Check cooling setpoint. Set cooling setpoint to desired temperature. Heating or cooling come on...