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Error: System air supply profile not found: UNKNOWN

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A profile that was missing from the project was not replaced and the project then saved. This would cause an invalid "UNKNOWN" profile to be recorded.

To resolve this problem we must introduce a new weekly modulating profile with the reference ID "UNKNOWN".

Step-by-step
1. Open Profiles editor (ApPro).
2. Create a new weekly modulating profile.
3. Assign ID "UNKNOWN".
4. Set all daily profiles to be 'Always off' daily profile. (this is default setting so should not have to change).

See related PDF for further information.