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10. FrostWash
10. FrostWash
FrostWash is available when applicable outdoor units and indoor units are connected. To use this function in VRF
system, outdoor unit function selection item "F1" need to be configured on outdoor units.
Please refer to the dedicated Service Manual for the FrostWash function.
Please configure function selection F1 on the outdoor units, and then set the wired remote controller.*
Please also refer to the Operation Manual and Service Manual of Wired Remote Controller for details.
Please contact the distributor or service personnel for availability and configuration of this function.
1.
About FrostWash
•
Regarding the noise upon freezing and defrosting
Cracking noise may be heard during the freezing or defrosting phase due to temperature change. Refrigerant
flow noise may also be heard. The noise may be heard relatively louder in a quiet environment. It is
recommended to set the "Auto-FrostWash Schedule" when the room is not occupied.
Choose not to use the FrostWash function in places such as hotel rooms and hospitals, where consistent
quietness is expected.
•
Ice fog may come out from air outlet during the FrostWash operation.
Ice fog could happen in a humid environment such as the room humidifier is used in a small room.
•
FrostWash is available when the outside temperature is in the range of 34
indoor temperature is in the range of 59
Also refer to technical documents of outdoor units because outdoor temperature range may vary depending
on outdoor units' type.
•
The temperature around the indoor unit may drop slightly during FrostWash operation.
2.
Start FrostWash
Generate frost on the coil and then melt the frost to wash the coil.
FrostWash setting is not enabled on the factory default setting.*
to enable this function.
Approx. 3 min.*
Preparation
(Fan mode)
•
Press "OK" on the wired controller to cancel FrostWash in the middle of an operation.
•
After a cancellation, frost on the heat exchanger needs to be defrosted and the heat exchanger needs to be
dried. The system cannot start operation for at least 8 minutes after cancelation.
•
You cannot start another FrostWash immediately after a FrostWash operation completes. Run either cooling
operation, heating operation or dry operation for approx. 60 minutes. Then, start another FrostWash
operation.
NOTE:
•
Do not open or remove the air inlet grill during the FrostWash operation. It may cause injury or damage of
units.
26
o
o
F - 86
F (15
Start FrostWash
Approx. 10 min. to 35 min.*
Freezing, defrosting, drying
heat exchanger
o
F - 110
o
o
C - 30
C).
1
Refer to "FrostWash" in the Operation Manual
FrostWash Completed
Stop Automatically
1
o
o
o
F (1
C - 43
C), and the
A16381TMF2
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