Operating instructions

9. TROUBLE-SHOOTING AND REPAIR
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9.4 TROUBLE-SHOOTING GUIDE
SYMPTOM PROBABLE CAUSE REMEDY
No output to cable; Utility power outage. Use voltmeter to verify
No AC line power; input voltage at receptacle.
Green “AC OUTPUT” LED off;
Green “LINE POWER” LED off; AC power cord unplugged. Plug in AC power cord.
Red “STANDBY POWER” LED off:
AC input circuit breaker Reset AC circuit breaker.
tripped.
Battery breaker tripped. Reset battery breaker.
In-line fuse open (BCK-FX) Replace fuse.
Battery cable disconnected. Connect battery cable.
Battery voltage below If alternative power source
Low Voltage Cutout threshold is available, connect the power
from extended power outage. module and allow it to recharge
(Batteries have been automatically the batteries.
disconnected by main control board
to prevent over-discharging).
Marginal battery capacity. Check batteries and
replace if necessary.
SYMPTOM PROBABLE CAUSE REMEDY
No output to cable; AC output fuse open. Replace fuse.
AC line power available;
Green “AC OUTPUT” LED off; SPI "ALT/ON" switch Move switch to
Green “LINE POWER” LED on: in wrong position. "ON" position.
Loose seizure screw inside SPI. Tighten screw.
SPI not connected to Check module's
module. AC OUTPUT connector.
SYMPTOM PROBABLE CAUSE REMEDY
No output to cable; AC output fuse open. Replace fuse.
No AC line power;
Green “AC OUTPUT” LED off;. SPI "ALT/ON" switch Move switch to
Red “STANDBY” LED on: in wrong position. ON position.
Loose seizure screw inside SPI. Tighten screw.
SPI not connected Check module's
to module. AC OUTPUT connector.
SYMPTOM PROBABLE CAUSE REMEDY
Incorrect output voltage. Wrong type of voltmeter used. Use true RMS meter.
Under-loaded output Connect load.
(less than 1 Amp).
Over-loaded output. Reduce load.
Faulty resonant capacitor Replace capacitor C1.
(will appear swollen or
distorted; may leak oil).