ARP Fridge Defend - Types of Setup Mode Variables; Setup Mode Button Operation; Ato Reading

ARP Control v5.x Troubleshooting Guide 0 © 2013-2020 ARPC L.L.C. All rights reserved. 2 04/20/202
2.2 Types of SetUp Mode Variables
There are 3 types of SetUp mode variables as follows:
1) Reading Variable: Example, AtO is a reading type variable because the user can only
read the value. Its value is dependent upon another setting.
2) Process Value*: Example, the ARP stores values such as AbS. AbS is calculated by
the ARP and stored for diagnostics. The user cannot change the value of AbS, the
value can only be reset to zero in order to clear the present value so that the ARP can
record new values in the future.
3) Setting*: Example, C-H is a setting that the operator can change/toggle to modify the
setting. C-H setting changes the ARP set-point function. The present choice for the
set-point will be displayed in the Reading Variable AtO.
* Please note that all Process Values and Setting changes need to be stored before
exiting the SetUp mode. See 2.22 Store Settings.
2.3 SetUp Mode Button Operation
The three buttons on the ARP Control that performs the following functions when in the SetUp
mode:
On/Off Button: Turn off the control by pressing and holding till OFF is displayed, and then
cleared.
Display Button: The display button is used to advance to the next SetUp variable. By
repeated pushing of the display button the variables will advance to the store function (S--),
then Er0, and then rotate back to the first variable AtO.
SetUp Button: The SetUp button will change the value of either a Process Value or a Setting
variable. Each push of the SetUp button will increment the value by 1 up to the maximum value,
and then rotate back to either zero or 1 to restart the sequence.
2.4 AtO Reading
AtO will display followed by the present value or Set-
Point function* selection, see 2.16 Set-Point Function
Setting. The following table shows the default values for
AtO:
Set-Point Function AtO Value
C-H C-H
C-L 196
PID 196
Example of default value being displayed:
*Use the charts for both AtO and AtS to determine the
present Set-Point function and values.