ARP Control v5.x Troubleshooting Guide 0 © 2013-2020 ARPC L.L.C. All rights reserved. 19
04/20/202
AUTO TUNE MODE
On/Off
Display
SetUp
Auto Tune is only necessary if the default ARP Control
settings do not work
. 98% of fridges will work with the
default settings.
If the default C-H Set-Point function is not working on
your fridge, please change & test the Set-Point Function
Setting to PID before contacting ARP Control.
To start Auto Tune, hold down both the right SetUp and
the center Display buttons. Then momentarily press the
On/Off button. Wait until At is displayed to release the
Display and SetUp buttons. At will be shown for 3
seconds, and then flashes shortly every other second
thereafter when the control is in the Auto Tune mode.
11.1 Auto Tune Procedure
The ARP control ships preset for a majority of refrigerators. But, each fridge can have different
control parameters even between two refrigerators that are the same make and model. For this
reason, Auto Tune should be run only if the pre-programmed control functions (C-H, C-L, or
PID) are not working.
It must be noted that Auto Tune procedures requires the cooling unit to be working properly
and the ARP Control to be installed correctly. Auto Tune will automatically determine your
fridge unique control parameters. We recommend using Auto Tune in the following manner:
1) Level fridge and make sure any auxiliary cooling fans are functioning properly. The
fans are extremely important for any fridge in a slide-out installation. Also, we are told
that some slide-outs do not always have the same level as the coach, check the fridge
level according to your fridge user manual.
2) Run Auto Tune for a period of 24 hours in the following manner:
12 hours with the fridge in the LP gas mode.
12 hours with the fridge in the 120VAC mode. We prefer to run the 120VAC
(shore power) overnight as most fridges fail in the early morning hours on shore
power.
3) Only use the On/Off button to turn off Auto Tune, otherwise an F7 error occurs.
The above recommendation is a rule of thumb, do what is convenient. Please use both heat
sources during a 24 hour period so that the Auto Tune procedure is accurate.
WARNING Auto Tune must run continuously, if there is an interruption in the power
supply to the ARP Control during the Auto Tune process it is imperative that Auto Tune be run
again.
11.2 Auto Tune & Set-Point Function
Each time Auto Tune is run, the control will retain one of two settings as follows:
C-H Set-Point Function Setting: If the ARP Control is in either the C-H or the C-L Set-
Point function settings upon entering the Auto Tune mode, after the Auto Tune session
the control will default to the C-H Set-Point setting.
PID Set-Point Function Setting: If the ARP Control is in the PID Set-Point function
setting upon entering the Auto Tune mode, after the Auto Tune session the control will
default to the PID Set-Point setting
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