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Optional Electronic Chime
(Models IA-28 or IA-29) does
not operate or operates at a
low level.
Improper volume setting.
TROUBLE
Hum in speakers.
Remote Station not working.
No door communication.
Intercom wiring run too close to
household AC power wiring.
Shorted intercom power wiring or
power wiring shorted to ground.
Interference from household
electrical fixtures.
Wire installation.
Speaker.
Wire installation.
Speaker.
Wire installation.
Improper volume setting.
Keep intercom wiring as far as practical from household AC power
wiring. Do not run intercom wiring parallel to AC power wiring.
Check power connections to Master and connections to transformers.
A dimmer may cause interference. For dimmer and fluorescent
lighting interference, use filters (G.E. 89G635 or equivalent;
NuTone Part No. 1559A-000).
Check terminal board for broken wire or loose connection. Check
continuity of wire.
Check continuity of speaker. Clean switch controls. Substitute with
speaker known to be in working order.
Check continuity of wiring. Check connections at speaker and Master.
Check with a speaker known to be in working order.
Be certain the chime is properly connected to the master station. Also,
be certain the front, side and rear buttons are properly connected to
the chime board.
Adjust the volume of the chime module by turning the volume
potentiometer located on the chime module. NOTE: Chime Audio will
NOT be heard at stations selected to the OFF or MONITOR.
Be certain the electronic chime is properly connected to the master
station's electronic chime input screw terminals.
Adjust the volume of the electronic chime by turning volume
potentiometer located on the chime.
POSSIBLE CAUSE POSSIBLE REMEDY
INSTALLER’S TROUBLESHOOTING GUIDE
Electronic chime can't be
heard through the master
station or remote speakers.
Static. Loose ground connection.
Interference from household
electrical fixtures.
Interference from household
electrical appliances.
Check ground connection to Master and connection to earth ground
source.
A dimmer may cause interference. For dimmer and fluorescent
lighting interference, use filters (G.E. 89G635 or equivalent;
NuTone Part No. 1559A-000).
Correct interference at the source: fish tank, heater, hand tool, coffee
pot, etc.
System squeals when using
intercom.
Shorted wire on master or
remote terminal board.
Two or more Remote Stations on
same wire run to Master.
Speakers in adjacent rooms
mounted on common wall, or
mounted back to back.
Improper wire used in
installation.
Check for short between terminals or loose wire.
Make separate cable (IW-6) runs from each Remote Station to the
Master.
If speakers are mounted directly back to back, one speaker will have
to be relocated. If speakers are in a common wall, try placing
fiberglass insulation behind each speaker, or isolate the speakers
from the wall by placing rubber washers or weather stripping between
speaker and wall.
NuTone Model IW-6 6-conductor twisted pair cable must be used.
17
Improper volume setting.
-Continued-