Section VII
Trouble-Shooting Guide
006-0006885 08/14/18
Rev H
43 of 48
MINV-4000-1U-28 Guide www.synqor.com
LED
Indication
Possible Problem(s)
B0 – B3:
LOAD POWER
LEDs
B3
is BLINKING RED
• Total MINV load power is greater than or approaching 4000W. The MINV
may still be delivering its specified output voltage because the load power
is not high enough to trigger the power limit circuitry.
B0 – B3
are all OFF
• No power is being delivered to the load.
• The MINV is OFF and needs to be turned ON.
• The loads or output cables are not connected.
• The loads are all turned off.
• The loads are simply not drawing any appreciable power at the time.
C0:
Fan Service
Required LED
LED is AMBER
• One or both fans have recently had degraded performance but seem to
be ok now. The MINV is running a diagnostic test.
LED is RED
• One or both fans presently have degraded performance, even if they are
running, and service is recommended at the earliest convenient time.
• Ensure that the fan blades are not obstructed from turning
F0:
MINV Cooling
System LED
LED is BLINKING
GREEN
• Indicates that the fans are running at 50% of their rated speed. There is
no problem.
LED is AMBER
• Indicates that the fans are running at 75% of their rated speed. There is
no problem, but the unit is operating at a high ambient temperature and
a high load combination.
LED is RED
• Fans are running at 100% of rated speed to keep the unit cool. The
maximum recommended temperature may be exceeded, but the fans
are keeping things cool enough to avoid triggering the over-temperature
shut-down circuitry.
LED is BLINKING
RED
• The maximum recommended temperature has been exceeded and the
system is approaching over-temperature protection. The load and / or
ambient temperature should be reduced if possible.
All LEDs:
All LEDs are OFF • The MINV is OFF and needs to be turned ON.
• The DC INPUT power is not turned ON.
Audible
Alarm:
(pattern
repeats every
5 seconds)
One tone
• The DC INPUT voltage is lower than the minimum operating level.
• Raise the DC INPUT voltage above the minimum level or verify the wiring is
appropriate for the input current so as not to cause an excessive voltage drop.
Two tones
• The total MINV load power is above 4000 W.
• Loads should be reduced if this condition persists.
Three tones
• The AC OUTPUT has experienced either a short circuit or a load having a
start-up surge current characteristic that the MINV could not start. The AC
OUTPUT has therefore turned OFF.
• To reset, the MINV must be turned OFF and then ON.
Four tones
• One or more fans have encountered a fault or degraded performance.
• The MINV may still operate with degraded fan performance, but will
require service. Ensure the fan blades are not obstructed.
