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Hi, I'm Robert. Welcome to JustAnswer. I'm reviewing your question now and will post back with your reply momentarily.
The code you are seeing is going to be key, and I am going to give you a service manual so you can verify. IF you are getting the 3 flashes it means the AC heater has failed, it could be the AC heating element or the circuit board. Click HERE and see the fault codes on page 8 and then go to the corresponding page and it will show you how to check the fault. You will need a volt meter to check the AC heating element. IF you have any questions or concerns during the process please feel free to reach out to me, I am around daily and respond when I can, follow ups are included.
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Hi was just checking in to see if my answer helped??? IF you have more questions or concerns please feel free to contact me..