40MUAA: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
26
24V Interface Board
Remote control (ON-OFF) terminal port CN2 and jumper
JR1 – OUTPUT 12VDC:
•
Remove the jumper JR1
to enable the ON-OFF function
• When the remote switch is off (OPEN); the unit is OFF
• When remote switch is on (CLOSE); the unit is ON
• When the remote switch is close/open, the unit responds to the demand
within 2 seconds
• When the remote switch is on, you can use the included remote
controller or wired controller to operate the unit as normal. When the
remote switch off, the unit would not respond the command from the
remote controller or wired controller and a CP code would be displayed
on the board.
• The voltage of the port is 12V DC, design Max. current is 5mA.
Fig. 60 —Remote Control Terminal Port CN2 and
Jumper JR1
Control Logic
Table 16 — Indoor Unit Connector
LED Display
The control displays active faults switches on the
LED
display. If the
control displays the fault switch and the
LED
flashes quickly, the unit has
malfunctioned. Refer to the detailed fault switches.
Connector
Purpose
R
24V
C
COM
G
FAN
Y
First stage cooling
Y Y2
Second stage cooling
B
Heating (Four-way valve)
W
Heating operation
W1
Electric Heating Operation 1
W2
Electric Heating Operation 2
E/AUX
Emergency Heat / Auxiliary Heat
DH
Dehumidification
L
Error Signal
