ECM Overview and Setup
98
UNT-SVX07E-EN
Note:
This label is provided for reference only, as an
example, and should not be used to configure the
unit.
Motor Control Board Settings
Note:
The motor control board functions and unit specific
settings are summarized on the motor control
board configuration label affixed to the back side of
the control panel low voltage lid, on every unit.
Table 42
lists the parameter names and typical settings of
the motor control board, for reference only.
Do not change the electric heat protection settings if your
unit has electric heat.
If the format setting for rpm values are not correct (i.e., not
four-digit: XXXX), please check the operation mode of the
motor control board
and
and motor signal
output format
and
.
Note:
The adapter boards contain high voltage.
Configuration adjustments to the motor control
board should be made through the SMALLER of
the two low-voltage lids on the front of the control
panel, through the low-voltage insulation/
shielding.
Figure 89.
Motor control board label
WARNING
Safety Alert!
You MUST follow all recommendations below. Failure
to do so could result in death or serious injury. All
settings take effect immediately, including fan startup
and enabling of electric heat. Caution should be taken
to stay clear of hazardous voltages, moving parts and
electric heat elements while making adjustments to the
motor control board. If it is not practical to stay clear of
these areas during adjustment of the motor control
board, please contact Trane Global Parts for
configuration kit that allows easy powering of the
motor control board outside of the unit with a
9V battery.
CAUTION
Burn Hazard!
On electric heat units, certain parameter values are
locked out to prevent overheating of the unit. These
functions will appear to be saved; however, they will
not be accepted if the Electric Heat Protection setting is
“On”. Do not change the Electric Heat Protection setting
to “Off” and make changes to the protected settings
unless you are programming an unconfigured service
replacement board to match the unit settings on a ECM
configuration label. Failure to follow this instruction
could result in the unit overheating and becoming hot
to the touch, which could result in minor or moderate
injury, and/or equipment damage.
NOTICE:
Equipment Damage!
Do not change the PWM output voltage settings as
motor damage could occur.
