Alpha Technologies Spectra Series - Manual (Page 47)

Preliminary Operating Instructions 47 of 62 AIP SERVICE NUMBER 1-800-863-3364
CHARGER FAULT CODE SYMPTOMS (CONTINUED)
Symptom Possible
Cause
Recommended Action
23) Hi DC
fault code or
charger output
voltage high. Charger
output
uncontrollable. Make note of charger DC voltage and current, turn OFF CB2 DC breaker to
turn off the charger output current. Battery voltage should drop and the fault
code should go off. Go to DC settings/amps (SECTION 11.3.3) and set the
amps down to "0". Turn ON CB2 DC breaker. If you have output current,
then go to the charger output uncontrollable symptom (#10). If no current,
proceed to next possible cause.
Wrong display
voltage.
Measure the DC voltage at the charger. It should be close to what is
displayed on the control board display. If not, the charger has an internal
component failure. See “Wrong display voltage” symptom (#5).
The value in
the DC Hi set
point is too
low.
If the display voltage is correct, calculate the volts per cell value, then verify
that the Float voltage setting (SECTION 11.3.3) is lower than the DC Hi set
point (SECTION 11.3.4). If the charger is in Equalize Mode, verify that the
Equalize voltage setting (SECTION 11.3.3) is lower than the DC Hi set point.
Is the charger setup to do Temperature Compensation (SECTION 11.3.3)? If
it is, verify that the voltage after temperature compensation as calculated, is
lower than the DC Hi set point. Cold temperatures will increase the battery
charger voltage if using temperature compensation. Adjust DC Hi set point in
the alarm setting's menu accordingly.
Bad A1 SCR
Driver Board.
If voltages are correct, calculate the volts per cell value. If the calculated
value is lower than the DC Hi value in the Alarm Settings menu, then power
the charger completely down and then power it back up. If problem symptom
returns, then replace the A1 SCR Driver Board.
Charger type
and Battery
type not
matched.
If the calculated volts per cell value is higher, then verify that the battery type
and voltage are both correct for the charger type indicated on the charger
label. Verify that the charger type in the DC settings menu (SECTION 11.3.3)
is correct. If the charger type is not correct for the size of battery set, then it
should be replaced with a correctly rated charger.
24) HiLoc
fault code. This fault occurs when the charger DC output voltage exceeds the value in
the HiLoc set point location in the Alarm Setting's menu (SECTION 11.3.4) for
more than one minute or if the DC voltage varies above this value more than
about three times in a minute. This fault will lockout and not allow the charger
to charge the batteries until the AC input voltage is cycled off then back on.
See “Hi DC” symptom (#23) for recommended action.
25) GFI +
or
GFI -
fault code. Ground fault
on external
DC bus.
Disconnect the charger from the battery and DC bus, then check the battery
and DC bus for a ground fault.
GFI alarm
needs
calibration.
Calibrate the GFI threshold value. See SECTION 11.3.4 and go to "Set GFI
Open".
Defective
wiring in the
charger.
Disconnect the charger from the battery or DC bus. With charger de-
energized, measure with an ohmmeter from charger ground to both the
positive and negative DC output connections. The resistance should be
about 300k ohms on both. If significantly less, disconnect the A1 SCR Driver
board JE4 and JE5 cables and measure the resistance between charger
ground to both the positive and negative DC output connections. Both should
be open. If not, check for evidence of damage or wires touching metal.
Defective A1
SCR Driver
Board.
Restart the charger. If unable to find GFI cause but the fault code returns,
replace the A1 SCR Driver board.