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DN-Series Integrated Programmable Controls
DOAS
MESSAGE
MEANING
Cool Locked Out by OA
The cooling OA lockout is lower than the OA temperature.
Unocc Mode
Unit is in unoccupied mode (BMS or scheduler).
Unocc Cool
Unit is in unoccupied cooling.
Unocc Heat
Unit is in unoccupied heating.
Heat Locked out by OA
The heating OA lockout is higher than the OA temperature.
Lockout Overlap
The OA lockouts for heating and cooling overlap. (No vent mode).
The heating takes preference.
Dehumid Mode
Unit is in dehumidification mode.
Econ Only
If economizer is open less than 100%.
Econ Mode
If in economizer mode.
Unit OFF
Unit is off.
Aux Heat Mode
OA temp is cold enough that the auxiliary heat is used.
IN HEAT MODE
Valve is positioned for heat mode.
IN COOL MODE
Valve is positioned for cool mode.
Valve Positioning
Reversing valve is positioning. Not heat or cool is on during
this time.
The heat pump status values are shown. Multiple values may be true.
TEMPERING CONTROL
6.5.3 VRF: with or without Modulating Auxiliary Heat
This type requires cooling type VRF and heating type either VRF (no auxiliary heat) or VRF and
Mod for units with 0–10VDC modulating auxiliary heat. These type settings are made here or in
the
Control Settings
.
6.5.3.1 VRF Mode
The mode is determined by the outdoor temperature and the heating and cooling lockout
temperature settings.
