Application Engineering
B U L L E T I N
AE8-1386 R1
How to Modify the Set Point of Compressors
and/or Fans
NOTICE
Before setting the target set points for the first time,
check and, if necessary, modify the type of refrigerant
(parameter FtyP) and pressure or temperature units.
Refer back to the section titled How to Set the Kind
of Refrigerant.
Procedure
1. Push the SET key for more than 2 seconds;
2. The Lower display will show the “SEtC” label,
the Upper display will show its value flashing.
3. To change the value, push the or
within 30s.
4. To memorize the new value and pass to the
fan set point, push the SET key.
5. The Lower display will show the “SEtF” label,
the Upper display will show the fan set point
flashing.
6. To change its value, push the or
within 30s. Push SET to save and exit.
The INFO Menu
The controller can display important information directly
from the main menu. The INFO menu is accessible by
pushing and releasing the UP key:
NOTE: This information is displayed only if the
related function is enabled
• dStO: percentage of the Pulse Width
Modification output driving the valve of the
digital compressor.
• dSFr: value of temperature or pressure when
the regulation filter of digital compressor is
enabled.
The “regulation filter” function calculates the
average value of the pressure/temperature
during a PWM cycle, and uses this value for
the control algorithm.
To exit: push the SET+UP keys together
How to Enter the “Pr1” Parameter List
To enter the “Pr1” parameter list, user accessible,
operate as follows:
1. Hold pressed the SET and DOWN key for 3s.
© 2013 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
2. The controller displays the name of the
parameter in the Lower display, its value on
the Upper display.
3. Press the “SET” key: the value of the
parameter will start blinking.
4. Use “UP” or “DOWN” to change the value.
5. Press “SET” to store the new value and move
to the following parameter.
To exit: Press SET + UP or wait 30s without
pressing a key.
NOTE: the set value is stored even when the
procedure is exited by waiting for the time-out to
expire.
How to Enter in Parameters List “Pr2”
The “Pr2” parameter list is protected by a security
code (Password).
SECURITY CODE is 3210
To access parameters in "PR2":
1. Enter the “Pr1” level.
2. Select “Pr2” parameter and press the “SET”
key.
3. The flashing value “0 ---” is displayed.
4. Use
or to input the security code
and confirm the figure by pressing “SET” key.
5. Repeat operations 2 and 3 for the other digits.
NOTE: Each parameter that can be edited in
“Pr2” can be removed or put into “Pr1” (user level)
by pressing “SET” + . Additionally, any "Pr1"
parameter can be moved to "Pr2" by pressing "SET"
+ draw down arrow while in the Pr2 list.
How to Change Parameter Values
1. Enter the Programming mode.
2. Select the required parameter with or
3. Press the “SET” key the value start blinking.
4. Use
or to change its value.
5. Press “SET” to store the new value and move
to the following parameter.
To exit: Press SET + UP or wait 15s without
pressing a key.
NOTE: the new programming is stored even when
the procedure is exited by waiting the time-out.
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