Carrier 38VMA Series, Service Manual, Page: 41 / 112

b. Refrigerant Recycling Operation
“
_n21” Refrigerant recycles to outdoor units
1. Close the liquid stop valve.
2. Enter “Refrigerant recycle to outdoor units (_n21)” mode.
3. Let the unit run for a while, and then close the gas valve quickly.
“
_n22” Refrigerant recycles to indoor units
1. Close the liquid stop valve.
2. Enter “Refrigerant recycle to indoor units (_n22)” mode.
3. Let the unit run for a while, and then close the gas valve quickly.
“
_n23” Refrigerant recycled to piping
Enter “Refrigerant recycle to piping (_n23)” mode and all indoor valves will open.
c. Snow-Blowing Function
1. Press SW5 button on spot check box of the header outdoor unit to enter the snow-blowing function.
It will display
“
Sn0” for 15 seconds.
2. Press SW5 button again to exit the snow-blowing function.
It will display
“Sn1” for 15 seconds.
The snow-blowing modes can be selected through S11 dip switch on spot check box.
Mode Heavy Snow Mode Light Snow Mode
S11
If the unit receives a startup signal, it will exit the snow-blowing function.
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