Technical Instructions LME Series
Document No. LME-1000
Section 5 Page 4 SCC Inc.
Displaying the Actuator Position / PWM Blower Speed from the LME7 Burner Control
The current position of the actuator (LME73…/LME75…) or speed of the PWM blower (LME71… with
PME71.901A1) can be viewed from the LME7 burner control using the following procedure.
1. Press and hold the A button on the LME7 burner control. “oP” will be displayed briefly, followed
by the actuator position / PWM blower speed from 0-100%.
2. Holding the A button for less than three seconds will briefly display the actuator position / PWM
blower speed. Upon releasing the A button, the display will return to normal.
3. Holding the A button for more than three seconds will leave the actuator position / PWM
blower speed displayed for two minutes. This is indicated by the decimal point in front of the
value flashing. After two minutes, or after pressing the + and - buttons together (escape), the
display will return to normal.
Manually Adjusting the Actuator Position / PWM Blower Speed from the LME7 Burner Control
During main operation, the current position of the actuator (LME73…/LME75…) or speed of the PWM
blower (LME71… with PME71.901A1) can be adjusted manually from the LME7 burner control using the
following procedure. Setting the actuator position / PWM blower speed manually overrides the analog
input signal on terminal X65 or the 3-position input signal on terminal X5-03.
1. Press and hold the A button on the LME7 burner control until the decimal point in front of the
value being displayed begins flashing. This takes approximately five seconds. “oP” will be
displayed briefly, followed by the actuator position / PWM blower speed from 0-100%.
2. Press and hold the A button again until “LoA” is displayed. Continue holding the A button and
simultaneously press the + or - button to increase or decrease the actuator position / PWM
blower speed respectively.
3. Once the desired actuator position / PWM blower speed is reached, release the A button. The
LME7 will alternately display “LoA” and the current actuator position / PWM blower speed.
4. To leave manual mode, press the + and - buttons together (escape). “oP” will be displayed and
the actuator position / PWM blower speed will be controlled by the analog input signal on
terminal X65 or the 3-position input signal on terminal X5-03.
AZL23 Display Unit Icons
Figure 5-1: AZL23 Display Unit Icons
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