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I have an NHR 9430 24kW system that was recently repaired and when combining the auxiliary and master units, I received error 203 on my system. How do I resolve this?
This typically can happen when an NHR 9430 unit is repaired because the latest version of firmware will be installed as part of the repair process, meaning that the non-repaired system can now have an older version of firmware.
To resolve this error, please follow the steps in the link below to upgrade the firmware on your NHR 9430 units.
Update the Firmware of the NHR 9400 Controller Board, Power Board and NB
Collaborate with other users in our discussion forums
A valid service agreement or active software subscription may be required, and support options vary by country.
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