TROUBLESHOOTINg
MICROTECH 2300 UNIT CONTROLLERDAIKIN APPLIED
24
signal or ready to operate when a control signal is active.
Unoccupied Mode
LED Activity Type Color Description
5 Flash Mode Green Unoccupied Mode Active
• Terminal U on main control board is connected to common
from external source or commanded by network.
Low Entering Water Temperature (Heating) (No
Display On Boilerless Electric Heat)
LED Activity Type Color Description
7 Flash Mode Green Low Entering Water Temp
• Verify entering water temperature is greater than set point.
HGR Low Return Air Temp Cutout
LED Activity Type Color Description
8 Flash Mode Green HGR Low Return Air Temp Cutout
• Unit is in the dehumidication mode and the return air
temperature is below 68°F.
Waterside Economizer Low Temp Cutout (WSE
Control & Call for Cooling)
LED Activity Type Color Description
9 Flash Mode Green WSE Low Temp Cutout
• Entering water temperature is below 45°F.
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