Troubleshoot Norcold Recall | Reset Recall | Fridge Off | Norcold 634737

Is your Norcold not working? What is that red light? This page troubleshoots, resets and fixes Norcold HTS 634737 recall kit. Do you experience fridge off, or Norcold error code?

This page shares reset and recall information, please see the Norcold Troubleshooting menu above for more troubleshooting subjects.

Table of Contents

Instructions: Subjects are listed on left. Click the link to the right to go directly to the subject matter on this page.

Following we teach how to reset the Norcold High Temperature Sensor (HTS) 634737 RECALL KIT found on 1200, 1210, & 2118 models. If you want to see how the HTS switch works, please click this video to see that the Norcold recall only takes action after the fidge has failed at round 1200°F, this is not safe!
The Fridge Defend is a Low Temperature Sensing (LTS) device that will protect your refrigerator rather than allow it to get red hot (High Temperature)!

This page covers the follwing topics:

  • If you get fault code 'L1 OP', reset procedures
  • Check for RED LED = Trip
  • RED LED Flashing
  • Fridge Defend Solution

  • What to do First if Norcold Recall or Fridge Defend by ARP Trips

    First step is click here to download Norcold Service Bulletin 634737 Recall Kit - HTS Diagnostics Procedure


    It has been reported that the Norcold recall false trips a majority of the time. This is evidenced by the 800degF set-point stated by Norcold ( Click here to understand the need for the ARP Control & why 800F is just too hot for Norcold recall trip point ). As a result of false triggers for the Norcold recall, operators get into the habit of resetting or bypassing the Norcold recall. This is a bad habit, if there is a failure of the fridge and one bypasses the recall, or turns off the ARP Control, a dangerous situation may occur. Thus, it is the responsibility of the user to know and understand all safety necessary to make the decision that the cooling unit has not failed before taking any reset or bypass action.

    Click here to get document outlining cooling unit checking technique.

    Norcold Recall Kit

    Troubleshoot Norcold Recall

    RESET: The figure to the left is a Norcold recall found on the 1200 series fridges. Our customers have informed us that these recall kits can be reset if there is a fridge off or not working situation. If your fridge is off, the first step is to see if the red LED is turned on? If so, Norcold recommends paying a service technician to inspect your system for leaks. If you are camping remote, and you are qualified to know the cooling unit does not have leaks, see next section. We state this because the most common cause of these recalls turning off is water on one of the controller parts.

    LED ON: If the red LED is on, some of these kits have been reset by Norcold users when they can not get into a Norcold repair facility. Our customers have identified the area above the LED where a strong magnet may be applied to the box to try and reset it, we recommend having a qualified Norcold technician perform all repairs. We are told if one does not have a strong magnet, the cover can be removed by compressing the clips identified in the image to the left. Please use this link to identify the area to apply the magnet: Norcold 1200 Series Recall.

    PLEASE NOTE, the Norcold control can be reset if and only if the boiler has cooled. Restated, the Norcold temperature sensor is not hot. It is possible to disconnect the temperature sensor plug found between the +12VIN and +12VOUT wires and put a jumper between these wires in order to fool the control. A strong magnet held for greater than 5 seconds should reset the control. Please contact Norcold to have your recall box replaced and have your fridge checked when you can get in for an appointment.

    WARNING: Norcold dealers are not allowed to stock these controls so be prepared for a wait.

    LED FLASH FAST (On/Off ~2 or 3 times per second): A Norcold service technician stated (not confirmed) that this could mean that the sensor is not connected to the recall kit. Or, the sensor that can be identified by red and yellow wires has an open circuit. Remove the plug found between the +12VIN and +12VOUT wires put a jumper between these wires. If the light quits flashing you found your problem.

    LED FLASH SLOW (On/Off ~once per second): A Norcold service technician stated (not confirmed) that this could mean that the voltage supplied to your fridge is too low. In some documents the low voltage for a typical RV fridge is 10.5VDC, but this is just a rule of thumb. Customers have stated that the low voltage threshold is 9.5VDC on the Norcold recall. Use your volt meter to find the connection that has high resistance or charge your batteries. Also, failed inverter charging systems can cause problems. In this case, disconnect your rig from shore power and make sure your batteries are fully charged to continue searching for a high resistance connection that can lead to a voltage drop in your system. Please start at the RV source of power, which should be a fuse block.

    Norcold Recall Kit Wiring

    Troubleshoot Norcold Recall Wiring

    The second drawing shows how power gets from your RV to the Norcold refrigerator control via the Norcold high temperature kit. Please use following link to see where the ARP Control can be with respect to these wires: Norcold 1200 Wiring.

    If your fridge is not working, please start by checking your fuses and circuit breakers. If the Norcold kit LED is turned on, it can be assume that there is power to the kit. We are told that Norcold service personal will connect the red wire from the coach power supply to the blue wire to the Norcold fridge control to test the fridge function. If the fridge turns on, then the Norcold recall box has failed and a Norcold authorized service department should replace the recall free of charge according to our clients.

    Please use the following link if a Norcold not working situation arises:

    Norcold Recall Page

    Fridge Defend Protection

    It is clear by clicking on this link that the recall cannot protect the boiler of your fridge in order to help prevent failure. As stated above, the recall leaves you stranded if it trips due to any other reason than a true failure of the cooling unit. This is another reason to install the Fridge Defend by ARP, if someone bypasses the recall -- as is reported to us often, you are left without protection.

    Got Reliability and Safety for your Norcold?

    Fridge Defend by ARP Policy

    The following information has been gained by our customers. This information is provided to help troubleshoot Norcold recall boxes, not to alter them. We are not an authorized Norcold repair facility.

    Please also see our complementary page Norcold 1200 Series Recall.

    Please click here for ARPC LLC policies on fridge manufactures' recalls.