10 ECB-VAVS Preloaded Applications
HVAC Modes
The following table describes the HVAC mode variables:
Variable Description
HVACModeCmd (MV2)
HVACModeCmd is received from the network. If no update is received from the network
for more than CommFailDelay(AV54), HVACModeCmd falls back to Auto.
The supported modes are: (1)-AUTO, (2)-HEAT, (3)-MRNG_WRMUP, (4)-COOL, (5)-
NIGHT_PURGE, (6)-PRE_COOL and (7)-OFF.
HVACModeStatus (MV15)
HVACModeStatus (MV15) is controlled by HVACModeCmd. When HVACModeCmd is
set to Auto, HVACModeStatus reflects the room’s actual terminal load.
Sequence of Operation
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