1 Reprogram the CCU which is known as an ETNA CCU (module). This will require a hardware key and an ESAM unit (neither of which are readily available to purchase).[br]
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2 Install a pre-programmed ETNA CCU for the correct model.
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2 Install a pre-programmed ETNA CCU for the correct model.[br]
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I’m adding this info in 2021 in order to help anyone who encounters the same problem.[br]
In order to remove the error code: 2 options:[br]
1 Reprogram the CCU which is known as an ETNA CCU (module). This will require a hardware key and an ESAM unit (neither of which are readily available to purchase).[br]
2 Install a pre-programmed ETNA CCU for the correct model.