OM 1085-6 • MICROTECH III CONTROLLER 18 www.DaikinApplied.com
30.
values and calibrate the brownout reference setpoint as
described in steps a-f. Applies only to the following unit
controller software versions:
PN 2506900 and 2506901
2. SmartSource Single and Two Stage Compressor
(Series2) with software PN 2508060 and
2508061
software PN 2508069 and 2508070
NOTE: Only perform the following calibration procedures
if the unit controller 24VAC voltage is within normal
operating parameters.
a. Place the unit in the Service Mode by shorting the
b. Tie a jumper wire from a ground connection to the
unit controller unoccupied input (‘U’ terminal).
c. Apply power to the unit controller and wait for 15
seconds.
d. Remove power from the unit controller.
e. Remove the ground wire from the unit controller
unoccupied input (‘U’ terminal).
f. Place the unit in the Normal Operating Mode by
NOTE: It is recommended that these steps are performed
each time new software is loaded in order to verify
proper brownout calibration.
31. Apply power to the unit controller for a minimum of 30
properly.
32. If a “Serial EEPROM Corrupted” message appears, cycle
power to the unit controller to clear the alarm.
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