The real RF15 display (Orcon RF15 display) has readout for error codes.
Can you implement these? I have the modbus addressed and error messages for the error codes if this helps.
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I'm looking into using this (awesome!) software with my Orcon HRC-350 (sold to me under the brand Ventiline) through an Arduino running evofw3, and am encountering a couple of issues.
The first is …