Disconnect the Temp sensor. Install a jumper on the Recall box between those 2 pins. IF the system stops flashing, the flue temp sensor is bad. You will need a new recall kit, Norcold will not give you one. You will have to go to a Norcold Service center. They will check and verify and then Norcold will send them a new recall kit. We charge .5 labor to check out the system and verify there are no cooling unit problems and the unit cools to spec. If all to spec, Norcold then sends us a new Recall kit and pays us the extra .5 to replace the existing kit. You replace all components, not just the defective part. Doug