Daitsu FDLA-09, Инструкция по установке, эксплуатации и обслуживанию

Страница: 180 / 322

Page 68 of 77
SK2019 FCSD(H)-V/P-ECM-001
Control Logic Specifications
Unit Power ON/OFF
a) The unit is turned ON when any of the fan speed inputs (H/M/L) are ON, or modulating signal input is more than 2.0 VDC.
b) The unit is turned OFF only if all of the fan speed inputs (H/M/L) are OFF and modulating signal input is less than 2.0 VDC.
Alarm Protection and Error Display
a) If the float switch is open for 5 minutes or EC motor is failed, then the (NC) voltage-free alarm contact shall be opened
and the (NO) voltage free alarm contact shall be closed.
b) If the float switch is open for 10 minutes, the LED display reports a condensate management failure (see table on the
next page).
Drain Pump Operation
a) When the unit turns ON:
i. If Ti1 < 14ºC, the drain pump turns ON.
ii. If 14ºC<=Ti<16ºC, the drain pan keeps original state.
iii. If Ti1 ≥ 16 ºC, the drain pump turns OFF.
b) When the unit turns OFF, the drain pump will remain ON for 5 minutes and then turn OFF.
c)
At any time:
i. If the float switch is OPEN, the drain pump will turn ON.
ii. If the float switch is OPEN and then CLOSED, the drain pump will remain ON for 5 minutes, and then turn OFF.
Louver Control
a) When the unit is OFF, the louvers are closed (angle at 100º against vertical).
b) When the unit turns ON, the louvers open (angle at 87º against the horizontal).
c) When the unit turns OFF, the louvers return to a closed position (100º against the vertical).
Modulating Signal Input
a) The standard configuration is for 0~5 VDC modulating signal input.
b) The optional configuration is for 0~10 VDC modulating signal. To set the PCB to the optional configuration, the S1 jumper
must be closed.
Low Temperature Protection of Indoor Coil in Winter
This is frost protection for when the unit is off to prevent water in the coil and room from freezing.
Unit is in Standby Mode
If Ti1
≦
2 ºC for 2 minutes, report error code and Buzzer is beeping for 3 minutes.