Intronics DT-04 Plus User manual

DT-04 Plus
INSTRUCTION MANUAL
P/N 170022-003EQ (Rev.00)
DT-04 Plus is a two-piece fan coil thermostat
available for Cool only version & Cool + Heat
version. Its application is for mini-split, duct type
or chiller system.
There are 4 major components as follows :
 Display unit
 Main unit
 Cable (4M.) connected between Display &
Main unit
 Remote unit (optional)
Display unit
LCD 5.1 Remote LCD 5.2 Remote

Display unit
-2-
cool only version
cool + heat version
1. Power
Press button to turn on/off the air
conditioner.
2. Fan
Press button to select the fan speed
(high, medium, low) or put it in
AUTO fan
mode.
In AUTO fan mode, the fan speed will change
automatically according to the difference
between the room & setting temperatures.
3. Temperature setting
Press or button to set the
temperature.
4. Timer on/off
To set the air conditioner on/off in advance up
to 15 hours.
 To turn on in advance, press button
while the air conditioner is off, LED will
be lit. Press or button for
hour setting.
 To turn off in advance, follow the above
instruction while the air conditioner is on.
 To cancel, press button once again,
LED will be off.
5. Sleep
Press button to activate the Sleep
function which will raise up/reduce the setting
temperature 1°C after 1 hour for Cool/Heat
mode respectively.
6. Sweep (optional)
Press button to turn on/off the sweep
motor.
7. Mode
Press button to select
 Cool / Fan mode for cool only version.
 Cool / Fan / Heat mode for cool + heat
version.

Remote unit
-3-
1. Power
Press button to turn on/off the air
conditioner. When turn on, it will operate
according to the last program settings on the
Remote unit.
2. Fan
Press button to select the fan speed or put
it in AUTO fan mode.
3. Temperature setting
Press button to set the temperature.
4. Mode of operation
Press MODE button to change the mode of
operation.
for cool only version, or
for cool + heat version.
Remark
 In Fan mode, FAN LED on the Display unit
will be lit.
 In Cool/Dry mode, COOL LED on the
Display unit will be lit.
 In Heat mode, HEAT LED on the Display
unit will be lit.
 In Auto mode, the LED according to the
current operating mode will be lit.
5. Sleep
Press SLEEP button to activate the Sleep function
which will raise up/reduce the setting temperature
1°C after 1 hour for Cool/Heat mode respectively.
6. Sweep (optional)
Press SWEEP button to turn on/off the sweep motor.
7. Clock Setting
To set the clock on the Remote unit.
 Press button until clock symbol is
blinking.
 Press button to set the clock.
 Press SEND button to confirm setting.
8. Timer on/off
To turn on/off the air conditioner in advance
up to 24 hours.
 Press button until timer symbol
ON or OFF is blinking.
 Press button to set the time.
 Press SEND button to confirm setting.
Remark
To cancel is to press
button until timer
symbol ON or OFF is blinking, then press
CANCEL button.

System features & Wiring diagram
-4-
1. Auto restart
In case of power interruption and back to normal, the Control will resume its operation with the
same settings. However the settings on Sleep & Timer modes will be cancelled.
Remark : No Auto restart feature can be provided as optional.
2. Time delay
There is a time delay for the compressor to restart.
Remark : No time delay feature can be provided as optional to use it with chiller system.
3. Self diagnostic
There is a self diagnostic facility to show an alarm at the display unit when there is any
system error.
 It shows status when the room sensor fails (short /open circuit).
 It shows status when the freeze sensor fails (short/open circuit).
 It shows status when the compressor fails or the freeze sensor is not installed
properly.
 It shows when there is freeze at the indoor coil.
4. Wiring diagram