Safety Instructions; Electrical Installation; Manual Mode Operation - Daikin JEHCCU0040CM1 Installationsanleitung

3.14.3 Controller EXD-HP1
The controller EXD-HP1 used in the Series 4 EVI unit operates as an
economizer control. The setting of controller is preset by the factory
and is password protected. Users are not allowed to change any
settings in the controller.
!

Safety Instructions:

1. Read installation instruction carefully. Failure to
comply can result in device failure, system
damage or personal injury.
2. Only person having appropriate knowledge and
skill are allowed to manipulate the controller.
3. Disconnect all voltages from system before
installation.

3.14.2 Electrical Installation

●
Do not operate system before all cable connections are completed.
●
Refer to wiring diagram for electrical connections.
●
Class II category transformer is required for 24VAC power
supply
●
Do not connect any EXD-HP1 input to main voltage as it will
permanently damage the controller.
●
When connecting wires of expansion valve and pressure
sensor, consider color coding as follow:
1. EXM : BR: BROWN; BL: BLUE, OR: ORANGE; YE: YELLOW;
WH: WHITE
2. PT5 : BN: BROWN; WH: WHITE
3.14.3 Display / keypad unit (LEDs and button functions)
ON: Data display ON: Data display
Circuit 1 Circuit 2
Blinking: valve is opening Blinking: valve is closing
ON: valve is fully open ON: valve is fully close
O-CU06-AUG17-3
All specifications are subjected to change by the manufacturer without prior notice. The English text is the original instruction.
Other languages are the translations of the original instructions.
ON: alarm ON: ModBus
OFF: no alarm communication
Next parameter/
value (higher)
Next parameter/
value (lower)
Selecting/
confirming
Parameters setting/saving
●
In standard mode the superheat is shown at the display. In case
of liquid injection and economizer function this changes to
discharge temperature.
●
To display other data of EXD-HP1 press "SEL" button for 1
second until index number according to below table appears.
Release "SEL" button and the next variable data will appears. By
repeating the procedure variable data can be displayed in
sequence as measured superheat (K) → Measured suction
pressure (bar) → valve position (%) → Measured suction gas
temperature (°C) → Calculated saturated temperature (°C)
→ Measured discharge temperature (°C) (if economizer function
is selected) → REPEATING
Variable data
Default Superheat, K
Suction pressure, bar
Valve position, %
Suction gas temperature, °C
Saturation temperature, °C
Discharge temperature, °C
3.14.4 Digital Input Di1/Di2
●
The digital input Di1 is the interface between controller
EXD-HP1 and system controller if Modbus communication has
not been used.
●
The digital status is dependent to operation of system's
compressor or demand.
Operating Condition
Compressor starts
Compressor stops

3.14.5 Manual mode operation

Warning: All alarms are disabled during manual control. We do not
recommend unattended operation of system during manual control.
● Press PRG
and together for 5 seconds to access to manual mode
operation.
● List of parameters in scrolling sequence by pressing
Code Parameter description and choices
1Ho Manual mode operation; circuit 1
0 = disabled; 1 = Enabled
1HP Valve opening (%)
2Ho Manual mode operation; circuit 2
0 = disabled; 1 = Enabled
2HP Valve opening (%)
Manual alarm reset clearing functional alarms
(except hardware error)
● Press PRG SEL
and together for 5 seconds. When the clearing is done,
"CL" message appears for 2 seconds.
Controller EXD-HP1
1 1
1 0
1 0
1 0
1 0
1 0
Digital input status
Closed (Start)
Open (Stop)
button
Min Max Factory Field
setting setting
0 1 0
0 100 0
0 1 0
0 100 0
7