Samsung AM022FNNDEH Service Manual page 242

Troubleshooting
4-4-16 Mixed operation Error (Only applicable to Heat Pump Model/Not to HR model)
● Mixed operation error is applicable only to Heat Pump Model and not to HR model.
● Mixed operation error is not due to a product problem but is displayed when the operational mode input in an indoor unit is different
from current operational status (other indoor unit's operational mode).
● Check the operational mode of outdoor unit or other indoor unit then re-enter or stop the operational mode of the relevant unit.
● If it is necessary to apply a different operational mode to an indoor unit from others, please stop other indoor units then operate the
indoor unit.
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