Daikin D2270C Owner's Manual & Installation Instructions page 31

Installer Setup
Dry Contact Operation
Dry Contact Polarity (Setup step 27)
Open (Normally Open) - The dry contact is open
until the connected device closes the circuit.
'Idle' 'Active' 'Idle' 'Active'
Closed (Normally Closed) - The dry contact is
closed until the connected device opens the circuit.
'Idle' 'Active'
Dry Contact Use (Setup step 28)
Condensate Pan - If selected when the
Dry Contact is active, the thermostat will
lockout compressor terminal(s) and
"CONDENSATE PAN" will appear on
the display.
Holiday - If Holiday is selected when the dry contact is active, the
thermostat will be forced into HOLIDAY/ Unoccupied settings.
FDD - If FDD is selected when the dry contact is active, "EQUIP
FAULT" will appear on the display.
Occupied - If Occupied is selected when the dry contact is active,
the thermostat will be forced into occupied settings.
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