µ-Dimension 12/1800N Owner's Manual - page 6
5. TROUBLESHOOTING
5.01 Dimensions offers free phone consultation
concerning installation or troubleshooting. Call the
Customer Service Department at:
1-800-553-6418 or 1-651-653-7000.
fax: 1-651-653-7600
e-mail: inverterinfo@sensata.net
5.02 If the inverter fails to operate correctly, use
the following troubleshooting procedure.
5.02.1 Connect a 100 watt light bulb to the
inverter output.
5.02.2 Make sure that the inverter is turned
“On”, and the circuit breakers are reset.
5.02.3 Check the connection to the remote
switch, if used. +12 VDC must be present at the
violet wire for the unit to operate. If not, check any
fuses in the remote switch circuit.
5.02.4 Observe the fault indicating lights on
the front of the inverter.
a) The Low input voltage light indicates a low
battery condition. Switch the inverter “Off” for 5
seconds, then “On” again. The light coming on
again indicates a fault in the battery wiring, battery
capacity and voltage or the line fuse.
b) The Overload light indicates an output
wiring short circuit or a load that is too large for the
power rating of the inverter. Switch the inverter
“Off”, remove the short circuit or excessive load
from the output, then switch the inverter back “On”.
c) The High temperature light indicates the
inverter has overheated. The unit will automatically
turn back on when it has cooled to 40
0
C
(104
0
F). Verify that the inverter is not in a closed
compartment and that the fan is not blocked.
5.03 For units having the B1 option, when the
battery charger fails to operate correctly check the
inverter troubleshooting procedure in 5.02, verify
that the remote temperature sense probe is in-
stalled correctly on the battery, then observe the
Page 6
ront panel lights:
a) The External power light should be lit, the
Power supply or the Battery charger light should be
lit. If not, verify that the external power circuit is
providing 120 VAC, 60HZ power to the unit. Check
all external power wiring and external circuit break-
ers or fuses.
b) The green Timer Complete light indicates
the unit’s battery charger was unable to completely
charge the battery(s) during the 12 hour charge
cycle. One or more of the following conditions can
cause this condition.
1) Verify that the two switch settings ("BAT-
TERY TYPE" and "BATTERY BANK SIZE") are
correctly set.
2) The charger was unable to detect the 80%
charge level point during the 12 hour cycle due to
a defective battery.
3) The battery’s voltage dropped below 12.6
volts while the charger was attempting to detect the
80% charge level. A battery with a shorted cell or
incorrect acid density can cause this condition.
4) More than 20 Amps of DC load current was
drawn directly from the batteries during the charge
cycle.
5) AC power loss (brown out) in the external
AC input that limited the amount of AC power
available to the battery charger.
5.04 A new charge cycle may correct the
Timer Complete condition if the cause seems to be
conditions 1, 4, or 5. The new charge cycle can be
started by disconnecting both external AC inputs
for 5 seconds then reconnecting them.
5.05 Call Airpax Dimensions, Inc. for technical
assistance and/or a Return Authorization Number
if the above steps are completed and the inverter
or battery charger will not operate satisfactorily.