Engineering

EDUS181520C Control Devices
Options 583
5
Display output is as described below.
Output
W2
OFF
Error display
Ry2
W4
W1
(Allowed electric current per contact is between 10 mA and 3 A.)
24V
Only Ry1 ON
Ry1
Both Ry1 and Ry2 OFF
Display
24V
Only Ry2 ON
Operation display
W3
3. Cancelling display signals
Operation output terminals (W1 and W2) and error output terminals (W3 and W4) are no-voltage normally constant contacts.
Normal operation output (Ry1)
ON when the indoor unit is
operating normally.
Error output (Ry2)
ON when the indoor unit stops
because of malfunction or when
a transmission error occurs
between the adaptor and the
indoor unit.
Adaptor
KRP4A74
Power
source
Normal
operation
System stopped due to malfuction or transmission
error generated between adaptor and indoor unit
1P161221-1A