Ductless indoor head unit emitting a moldy smell.
Upon diagnosis found unit’s filter dirty, cleaned and also sprayed system with solution to help rinse some of the spots it formed overtime.
Also set up properly the controller for such unit which services a software room that must be at 70 degrees all the time.
There’s were signs of build up by coil, I cleaned and rise those out.
A thorough cleaning might be required. I advice customer to continue to monitor system now that it’s running as it should not all the time before when it wasn’t set up correctly.
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