TK SB210 - Codes - 11,13,203,03

We're having a lot of trouble with this reefer. We keep having Codes - 11,13,203,03 come up. We've changed the return air sensor. Tried a different ECM. Sent the unit to the dealer. No success, keeps up with these codes and runs with the amber light on at a sceptical temperature. Any suggestions would be appreciated.

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Originally Posted by JBoston

We're having a lot of trouble with this reefer. We keep having Codes - 11,13,203,03 come up. We've changed the return air sensor. Tried a different ECM. Sent the unit to the dealer. No success, keeps up with these codes and runs with the amber light on at a sceptical temperature. Any suggestions would be appreciated.

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Did you change one return air sensor or both? Unless one of the sensors is way out it's impossible to tell which one is faulty so I usually change both the control and display sensors. Can you get a download and see what the temperatures were reading when it set the codes? There is also a kit from TK that straps the two sensors together.