Samsung DVM Installation Manual page 46

Inspection and test operation
CAUTION
Solution for mixed operation prevention
• This function is to prevent DVM CHILLER and FCU (KIT) from operating in different
modes.
– Ex.) The situation that cool air comes out since DVM CHILLER is operating in Cool
mode and FCU is operating in Heat mode in 2-pipe system
– If Lock function is set on DMS2.5 or Touch centralized controller: Other operation
modes cannot be operated by FCU KIT if administrator selected Cool/Heat mode and
set Lock function on DMS2.5 or Touch centralized controller
– If Lock function is not set on DMS2.5 or Touch centralized controller: Refer for
maintenance that it detects water outlet temperature and stops fan after 10 minutes
if temperature is not appropriate, and error message will occur if the fan is stopped
for more than 30 minutes (E992, E993).
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