Question about Thetford Norcold RV Cooler/Freezer
Has ll op code
Posted by Anonymous on
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Hello scarter517 - Typically error code OP indicates that the freezer sensor is in an open position. A professional would need to check the wiring between the thermistor and board. If correct, the thermistor may possibly need replacing.
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If that doesn't clear the OP error code it would be time to;
1. Confirm the 12VDC on the control board is good.
2. If good see if 12VDC is making it back to Conn_3 Pin 9 down to the LF Hand Lid Lock and thru the Magnetic Reed relay back to the Control Board Conn_3 Pin 9.
Before you go thru all that did you open the Left Lid Lock and make sure the Black lead on the magnetic reed relay did not break off from corrosion issues. I know I have a number of post on this board related to troubleshooting the left hand lid lock..................Rick
But some pic's for ref;
How to check that the magnetic reed relay is closing with you DVM.
I'm on P1 and P2 of the left hand lid lock. Those pin are referenced to the schematic jut for my troubleshooting info.
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