Samlex America SAM-450-12E - Manual (Page 12)

12 | SAMLEX AMERICA INC.
seCtIOn 9 | troubleshooting Guide
Issue: no Ac output - Green LeD is not on, Yellow LeD is on, Buzzer is on
PoSSiBLe cAUSeS:
Low DC input voltage shut down due to DC input voltage at the inverter terminals dropping
below 10.0 VDC. Auto reset when the DC input voltage is > 11.5 VDC.
SUGGeSteD ReMeDieS:
•
Low battery terminal voltage. recharge the battery. If battery voltage does not rise to fully
charged voltage even after long charging time, replace the battery.
• Excessive drop in DC input wires due to thin DC input wires. Check firmness of connections and
increase wire size
• If the battery terminals read higher voltage at no load but the terminal voltage drops ap-
preciably when the load is turned on, the battery may have sulfated due to undercharging.
Equalize the battery (only flooded or wet cell types).
Issue: no Ac output - Green LeD is not on, Yellow LeD is on, Buzzer is oFF
PoSSiBLe cAUSeS:
1.
over temperature shutdown
2. High DC input voltage shut down. DC input voltage is > 15.5 V. Auto-reset when voltage
< 15.5 VDC
SUGGeSteD ReMeDieS:
IF Cause #1:
•
fan failure: Check that the fan runs when the unit is loaded to > 8 to 12 W
• Ventilation openings are blocked: remove any obstructions in the ventilation openings
• Not enough cool, replacement air: Install the unit in an open, cool and dry area
• High ambient temperature > 40 C: The temperature of the unit will slowly rise even if the
fan is working
IF Cause #2:
•
The battery charger may be charging at > 15.5 V, especially during Equalization. Disconnect
the DC input of the inverter when equalizing the batteries > 15.5 VDC
• It is likely that 24 VDC battery has been connected instead of 12 VDC battery. oNLY USE A
NoMINAL 12 VDC bATTErY WITH THIS ProDUCT.
Issue: no Ac output - Green, Red and Yellow LeDs are not on and Buzzer is oFF
PoSSiBLe cAUSe: No DC input power.
SUGGeSteD ReMeDieS:
•
Check DC voltage at the DC input terminals
• If DC input cable with cigar plug is being used, the 8 A fuse in the front of the cigar plug may
have blown if the load being powered was > 80 W. replace the fuse in the cigar plug, if blown.
• If powered from the cigar receptacle in a vehicle, the fuse in the vehicle that is supplying
the cigar receptacle may have blown. Check and replace. After replacing the fuse, check DC
input voltage at the inverter terminals. If DC input voltage is available, the internal fuses may
have blown. Call Technical Support.
• If DC input cable with battery clamps is being used without inline fuse, the internal DC fuses
in the inverter may have blown. Call technical support
• If DC input cable with battery clamps is being used with inline fuse, check the inline fuse and
replace if blown. If the fuse is intact, the internal DC fuses in the inverter may have blown.
Call technical support.