Section VII
Trouble-Shooting Guide
006-0006452 MPC-1500 Operator Guide
Rev P
44 of 48
03/03/2021 www.synqor.com
LED
Indication
Possible Problem(s)
B0 – B3:
LOAD POWER
LEDs
B3 is BLINKING RED
• Total MPC load power is greater than or approaching 1250 W. The
MPC 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 MPC 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.
F0:
MPC Cooling
System LED
LED is BLINKING
GREEN
• Indicates that the fans are running at 67% of their rated speed.
There is no problem.
LED is AMBER
• Indicates that the fans are running at 100% 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 110% 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.
C0:
Fan Service
Required LED
LED is AMBER
• One or both fans have recently had degraded performance but seem
to be ok now. The MPC 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
Audible
Alarm:
(pattern
repeats every
5 seconds)
Two tones
• The total MPC load power is above 1250 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 MPC could not
start. The AC OUTPUT has therefore turned OFF. The DC output may
still be powered.
• To reset, the MPC must be turned OFF and then ON.