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ARP Fridge Defend Troubleshooting Manual

V5 + fan control
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Fridge Defend® by ARP
Q3
Refrigerated Space
Condenser
Cooling
Evaporator
Fin
Q2
Absorber Coil
Q1
Percolator
Boiler Assembly
Pump
LIQUID: Water;
Ammonia; Sodium
Chromate
Boiler
Q1 = Q2 + Q3
v5.x ARP & ARP + Fan Control
Troubleshooting Guide
Please click here for Online ARP Video Operation Manual
User Web Search Engine:
Click here for Web Search before Contacting ARP Control

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Summary of Contents for ARP Fridge Defend

  • Page 1 Ammonia; Sodium Chromate Boiler Q1 = Q2 + Q3 v5.x ARP & ARP + Fan Control Troubleshooting Guide Please click here for Online ARP Video Operation Manual User Web Search Engine: Click here for Web Search before Contacting ARP Control...
  • Page 2 24 hour self-test. Power surges can turn off the ARP Control just the same as any equipment in an RV, thus it is the operators responsibility to insure that the control is functioning properly.

  • Page 3: Table Of Contents

    2.17 Defrost Setting/IEC Periodic Test ................7 2.18 Software Version Reading ..................7 2.19 Serial Number Reading ................... 7 2.20 Audible Alarm (5.1 only)..................7 2.21 Restore ARP Defaults....................7 2.22 Store Settings ......................8 2.24 Exit SetUp Mode ...................... 8 ARP ERROR MESSAGES......................9 IEC Type Accessory;...
  • Page 4 3.10 bAd ......................... 11 3.11 F4 or F5 SetUp Button Test .................. 11 3.12 E8 Error ........................12 3.13 E10 Flashing when Test ARP with SetUp Button ..........12 3.14 E11 Trigger Event ....................12 3.15 F1 MCU ADC Error Checker.................. 12 3.16 F2 at ARP Startup ....................
  • Page 5 7.5 SHt & Fuses: General Electrical Short Troubleshooting........15 7.6 SSH ........................... 16 CONTROL VARIABLES ......................16 8.1 Introduction to Control Variables................16 8.2 SP..........................16 8.3 OS ..........................17 ADJUSTMENT VARIABLES ....................17 9.1 C or F ........................17 9.2 C-H, C-L, or PID Set-Point Methods ...............

  • Page 6: Safety

    SETUP MODE 2.1 Activate SetUp Mode To place the control into SetUp mode, begin by turning off the ARP Control (Please see User Guide → Turn off ARP Control). When the control is off, the SetUp mode is activated by...

  • Page 7: Types Of Setup Mode Variables

    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.

  • Page 8: Ats Reading

    By pressing the SetUp button, the value will be cleared. When the AbS value has been cleared, will flash on the display until the control is put into the ARP mode to record a new maximum value. Any changes must be stored, see 2.22 Store Setting.

  • Page 9: Opn Process Value

    ARP will turn On/Off the fan. There are six fan temperature settings to select from. For a non-fan type ARP Control, the fan setting is a fixed number 0 and cannot be changed. By momentarily pressing the SetUp button the fan control temperature can be set to a desired value.

  • Page 10: Sp Setting

    OFF Temperature Setting °F °F Fan Off 2.12 SP Setting raises the set-point value of the ARP Control. The default setting for is 5. See section for further information. 2.13 OS Setting The OS setting is used for the restart of the refrigerator.

  • Page 11: Temperature Units

    2.22 Store Setting. 2.16 Set-Point Function Setting The ARP has three Set-Point control functions as follows: is the Set-Point control high mode. This is the default mode and would be considered the plug-n-play mode. This setting works on most refrigerators.

  • Page 12: Defrost Setting/Iec Periodic Test

    Use the right button to toggle to the setting. When = oFF, the IEC periodic test of the ARP is not For refrigerators that have a preformed. Nor does the ARP defeat the defrost cycle, defrost cycle that is timed to turn thus the fridge runs with its factory defrost cycle.

  • Page 13: Store Settings

    04/20/202 0 © 2013-2020 ARPC L.L.C. All rights reserved. This setting restores the default settings that came with the ARP when new. If Auto Tune is run by mistake, the original settings can be restored by pressing the SetUp button.

  • Page 14: Arp Error Messages

    24 hours when activated. The self-test checks most of the critical functions of the electronic control. The reason that the ARP Control is referenced as a hybrid is that it is similar to a dual MCU controller in that the ARP has an external watchdog timer (exWDT) that will turn off the refrigerator and sound an alarm (v5.1) if the MCU becomes stuck and stops processing...

  • Page 15: 123 Numbers On Display (Not An Error)

    ARP one prevents the ARP from doing its any issues or to use the recorded value for job. If the ARP is turned off and then back on diagnostics. the fridge will overheat again. See ARP User...

  • Page 16: Sht Boiler Sensor

    ARP 3.10 after the boiler has cooled. As a rule of If the ARP Control is in the Auto Tune mode, thumb, using caution to avoid being burnt, and the boiler sensor exceeds 250 C...

  • Page 17: E8 Error

    04/20/202 0 © 2013-2020 ARPC L.L.C. All rights reserved. Control by using our Contact Us form at the ARP red wire so that control turns back www.ARPrv.com on. Check to see if F2 is still displayed? If F2 is not displayed, internal relay is functioning.

  • Page 18: Arp Reset Procedure

    We do not recommend button is not turned off before the reset turning off the ARP if it has detected an over procedure. If your fridge has overheated, heat situation, please let the ARP do its job there is a problem that should be addressed and allow it to restart the fridge.

  • Page 19: Heat Sources

    (boils) is dependent measured by a cooling unit rebuilder. Now, on two physical qualities: temperature and the ARP can be used as an indicator by pressure. The temperature measured at your which to measure the cooling unit pressure.

  • Page 20: Diagnostic Variable

    The tr value is simply the number of times that the ARP has triggered since the last time 7.2 AtS the value was zeroed. When Auto Tune is AtS is only used for the PID set-point run, tr value is zeroed.

  • Page 21: Ssh

    Only if the fridge is being turned to sea-level without a false trigger of the off by the ARP Control when the user feels control due to the rise of the gas flame that the fridge should remain running shall temperature.

  • Page 22: Adjustment Variables

    User Guide for use the other control methods if one wants more fan control details. The preferred to fine tune the ARP for C-L, or your location for the fan thermistor is on the particular fridge requires the PID Set-Point absorber coils.

  • Page 23: Set-Point Mode (Sp0)

    Display button The Display button has the same functions is the maximum and minimum voltages as in the ARP Control mode; please see the seen while in this display mode. The display User Guide for more on this subject. Use of will keep alternating &...

  • Page 24: Auto Tune Mode

    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.

  • Page 25: Rv Storage & Startup Tips

    12.2 Get Ready to Go – Dry Run The ARP Control can measure your RV living space battery voltage, but we only recommend doing this after getting the RV engine and drive train are ready for safe operation. We suggest starting the RV engine before addressing the RV living space electrical system.

  • Page 26: Get Fridge Ready For Travel

    ARP Control v5.x Troubleshooting Guide 04/20/202 0 © 2013-2020 ARPC L.L.C. All rights reserved. ARP Control before leaving on a trip, the ARP Control troubleshooting features can help solve any issues before you leave. 12.4 Get Fridge Ready for Travel We like to freeze two gallons of water in our household freezer to speed up our departure when we go camping.
  • Page 27 ARP Control v5.x Troubleshooting Guide 04/20/202 0 © 2013-2020 ARPC L.L.C. All rights reserved. 125.6 1201.7 221.0 1404.0 316.4 1603.1 127.4 1205.5 222.8 1407.8 318.2 1606.8 129.2 1209.4 224.6 1411.6 320.0 1610.5 131.0 1213.2 226.4 1415.4 321.8 1614.3 132.8 1217.1 228.2...
  • Page 28 ARP Control v5.x Troubleshooting Guide 04/20/202 0 © 2013-2020 ARPC L.L.C. All rights reserved. 411.8 1798.9 437.0 1850.1 462.2 1901.1 413.6 1802.6 438.8 1853.8 464.0 1904.7 415.4 1806.3 440.6 1857.4 465.8 1908.4 417.2 1809.9 442.4 1861.1 467.6 1912.0 419.0 1813.6 444.2...
  • Page 29 This manual has been provided courtesy of My RV Works, Inc. www.myrvworks.com You can find more RV service manuals here: www.myrvworks.com/manuals Over the years of running a mobile RV repair service, having a dedicated place to access service manuals for all the different appliances and components found on RVs was something that I always had a desire to create.

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