Thermostat Information; Outdoor Temperature Sensor (Select Models) - Honeywell T8501 Installation Instructions Manual

THERMOSTAT INFORMATION

1. Press the i key to access the thermostat informa-
tion.
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 (Exam-
ple: 026 = February 1996).
3. Press the increase ! key again to display the soft-
ware identification code. (Example: 02 = software
ID code 2).
T8501 MICROELECTRONIC THERMOSTATS
4. Press the increase ! key again to display the soft-
ware revision number (Example: 001 = revision
number 1).
5. Press the increase ! key again to display the
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EEPROM identification code. (Example: 222 =
EEPROM ID 222.)
6. Press and hold the increase ! and decrease #
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keys together, until the room temperature is dis-
played, to exit the system test mode. The system
test times out after five minutes without any key
presses.
CHECKOUT
Outdoor Temperature Sensor
(Select Models)
Allow the outdoor temperature sensor to take in the
outdoor air for a minimum of five minutes before taking a
reading. With an accurate thermometer ±1°F (±0.5°C),
measure the temperature at the sensor location, allowing
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time for the thermometer to stabilize before reading.
Match the thermometer reading to the outdoor
temperature display at the thermostat.
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