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Service & Setup Functions
Forced cooling and manual defrost are service functions that can be performed from the outdoor unit.
Forced Cooling
Press and hold SW 1 FORCE_COOL and hold for 5 seconds.
•
Forced Cooling will override and disable all controllers restricting end-user(s) operation, this is to include
centralized controllers as well for a period of 60 minutes.
•
Compressor frequency, fan speeds, and EXV positions will be elevated and will operate semi-indepen
-
dently from refrigerant pressures and temperatures.
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Cooling and heating capacity demands will not be observed during this period.
•
Indoor units are in the cooling mode and fans are ON.
Manual Defrost
Press and hold SW 2 CHECK and SW 1 FORCE_COOL and hold for 5 seconds.
•
Manual Defrost will override and disable all controllers restricting end-user(s) operation, this is to include
centralized controllers as well for a period of 10 minutes (unless .
•
Compressor frequency, fan speeds, and EXV positions will follow automatic defrost logic. See service
manual.
•
Indoor units are in heating mode and fans are OFF.
Summary of Contents for VPB H4-3P Series
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