DC Inverter Multi VRF System
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When applicable mode is selected, press SW7 to confirm. The related display is as below:
This setting will be memorized by master unit and can’t be cancelled even when power is on
or off.
Then press SW6 on the master unit to return to the previous step.
If then no motion is taken to the master unit for 5min, unit will exit and resume displaying the
current status.
(If this button is pressed when function is being set, system will return to the previous step. If
SW6 is pressed when setting is finished, system will resume displaying the current operation
status.)
Default setting is “nA” cooling and heating type.
Level B—IDU Mode Auto Control
When Level A is disabled or outdoor unit is set to be cooling and heating type, the operation
mode within one system depends on the master-salve setting of indoor units.
8.3 Forced Defrosting
This function can only be set when outdoor compressor is running.
Upon entering this function, main board of outdoor unit will display as below:
Press SW7 to confirm. When system enters this function, main board of outdoor unit will
display as below:
Then unit will be in compulsory defrosting mode. Once unit is under compulsory defrosting,
this mode can only be stopped when requirements for exit are met.
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