18
II
N
N F
F R
R A
A R
R E
E D
D
E
E
X
X T
T E
E N
N D
D E
E R
R
-- M
M
A
A II N
N
S
S
Y
Y S
S T
T E
E M
M
U
U
N
N II T
T
inserted into the connector. Examine the con-
nectors for a hair-like filament of wire between
any of the contacts. Repair as necessary. Retest
the system (have someone watch the green IR
LED on the IRP2+ while you aim a remote con-
trol at a remote sensor and press a button).
• IR Test LED Flashes:
Congratulations!
• IR Test LED Off:
Go to Step 26
•
26
Test Cable for Shorts
Disconnect the cable at both ends (at the sensor
and at the IRP2+) and test it for shorts. Use an
ohm meter or electrical continuity checker. You
should read an open (Infinite Ohms) between
Red and Bare, Red and Black or Bare and Black.
If you find a short, replace or repair the cable as
necessary. Retest the system (Have someone
watch the green IR LED on the IRP2+ while you
aim a remote control at a remote sensor and
press a button).
• IR Test LED Flashes:
Congratulations!
• IR Test LED Off:
Go to Step 27
•
27
Test Cable for Opens
At one end of the cable, twist the exposed
copper ends of the Red (+) and the bare
(GND) conductors together. At the other end
of the cable, use an Ohm meter or continuity
checker to check for a break in the cable. You
should read a short (zero ohms) between the
exposed copper ends of the Red (+) and the
bare (GND) conductors. Repeat this test with
the Red (+) and the Black (DATA) conductors.
If you find an open, replace or repair the cable
as necessary. Retest the system (have someone
watch the green IR LED on the IRP2+ while
you aim a remote control at a remote sensor
and press a button).
• IR Test LED Flashes:
Congratulations!
• IR Test LED Off:
Go to Step 28
•
28
Connect Sensor to Other Input of the IRP2+
Disconnect the sensor and reconnect it to the
other sensor port on the IRP2+. Retest the sys-
tem (Have someone watch the green IR LED
on the IRP2+ while you aim a remote control
at a remote sensor and press a button).
• IR Test LED Flashes:
Congratulations!
• IR Test LED Off:
Go to Step 29
•
29
Replace the IRP2+ and/or the Sensor/Keypad
If you have another IRP2+, sensor or keypad,
change it and retest the system, otherwise
return the IRP2+ and the sensor/keypads to
your local Niles dealer for testing.
