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25NILES AUDIO CORPORATION – 1-800-BUY-HIFI – 305-238-4373
OPERATING THE ZR-4 MULTIZONE RECEIVER
PLAY SOURCES 2-4
1. Pressing any of these source keys will turn on the zone
and allow you to listen to the source connected to that
input at the preset start volume.
2. Additional control over the source’s functions is available
using the R-6L Remote Control.
3. The 12V out on the rear panel of the ZR-4 MultiZone
Receiver and the Keypad will become active.
4. Pressing the Off key will turn off the zone. The 12V
output on the rear panel becomes inactive if all other
zones are off.
PARTY MODE
1. Pressing-and-holding any of the Source Keys on a
Keypad for 3 seconds will initiate the Party Mode. This
feature turns all enabled zones on to that source at the
programmed party volume level. If the zone is already on,
no volume level change will take place. Volume control,
bass and treble are still independent in each zone.
2. The 12V out on the rear panel of the ZR-4 MultiZone
Receiver and the enabled Keypads will become active.
3. Pressing and holding the Off button for 3 seconds in
any zone will turn off all zones. All 12V outputs become
inactive.
PROBLEM:
1. Front panel DISPLAY blinks: THERMAL WARNING.
If the ZR-4 MultiZone Receiver has an inappropriate speaker
impedance load or inadequate ventilation, the system will continue
to work, but with a warning that a fault needs to be corrected.
Other fault indicators include: blinking front panel zone LED(s)
corresponding to the faulted zone(s) and blinking source and mute
keys on the keypads.
SOLUTION:
• Check that the speaker impedance in all zones is not below 4
ohms per channel. If four speakers are to be connected in a
zone, they must be 8 ohm speakers connected in parallel.
• Check to make sure there is adequate space (see page 14)
above the ventilation holes on the top of the ZR-4 MultiZone
Receiver. A Niles FM-1 (FG01215) or FM-1R (FG01214) System
Cooling Module may be necessary in installations where
ventilation is limited.
PROBLEM:
2. No sound (All Zones).
Front panel DISPLAY blinks: THERMAL PROTECTION.
If the ZR-4 MultiZone Receiver has an inappropriate speaker
impedance load or inadequate ventilation, eventually the entire
system will turn off. Other fault indicators include: a blinking
front panel zone LED(s) corresponding to the faulted zone(s) and
blinking source and mute keys on the keypads.
SOLUTION:
• Check that the speaker impedance in all zones is not below 4
ohms per channel. If four speakers are to be connected in a
zone, they must be 8 ohm speakers connected in parallel.
• Check to make sure there is plenty of space above the ventilation
holes on the top of the ZR-4 MultiZone Receiver. A Niles FM-1
(FG01215) or FM-1R (FG01214) System Cooling Module may be
necessary in installations where ventilation is limited.
PROBLEM:
3a. No sound from both channels (One or More Zones).
Front panel DISPLAY blinks: ZONE (X) LSPKR SHORT or ZONE (X)
RSPKR SHORT.
3b. Sound from only one channel (One or More Zones).
Front panel DISPLAY blinks: ZONE (X) LSPKR OK or ZONE (X) RSPKR
SHORT.
If a speaker wire has a short circuit, the shorted channel(s) of the
ZR-4 MultiZone Receiver will shut down. Other fault indicators
include: blinking front panel zone LED(s) corresponding to the
faulted zone(s) and blinking source and mute keys on the keypads.
SOLUTION:
• Turn the entire system off using the main power switch on the
front of the ZR-4 MultiZone Receiver.
• Check for shorts and repair/ replace the speaker wire.
• Turn the system on using the main power switch.
PROBLEM:
4. No sound (One or More Zones).
Front panel DISPLAY blinks: AMPLIFIER FAILURE.
The output chip has acted to protect itself from potential damage.
Other fault indicators include: blinking front panel zone LED(s) and
blinking source and mute keys on the keypads.
SOLUTION:
• Call Niles Tech Support
PROBLEM:
5. No sound (All Zones).
Front panel DISPLAY blinks: POWER FAILURE.
The output chip has acted to protect itself from potential damage.
Other fault indicators include: a blinking front panel zone LEDs and
blinking source and mute keys on the keypads.
TROUBLESHOOTING