4-2
T
ROUBLESHOOTING
T
ABLE
4-1: SE 3718S T
ROUBLESHOOTING
G
UIDE
S
YMPTOM
P
ROBABLE
C
AUSE
R
EMEDY
AC ON indicator does not
(1) No AC power to unit.
(1) Check AC line; verify that power cable
come on when circuit
(2) Circuit breaker has tripped
plug is plugged fully into power
breaker is placed in the on
off line.
connector.
position.
(3) Power supply is faulty.
(2) Reset circuit breaker. If it continues to
trip, call WSE for disposition.
BATTERY CONNECTED
(1) Power supply does not recog- Wait 15 seconds: It takes several seconds
and BATTERY FULL
nize a battery is present.
for the unit to detect a battery. Check
indicators are out; all other
(2) Battery not connected.
battery fuse. If blown, check battery and
indicators are on.
(3) Battery improperly connected. connections before replacing; if fuse blows
(4) Battery is faulty.
again, call WSE for disposition.
BATTERY CONNECTED on; A power outage has drained all
Replace battery with a fresh one or wait
all other indicators are out.
backup power; unit has tripped
for power to return.
offline to protect the battery.
BATTERY FULL indicator is
(1) Battery is not yet fully
(1) Wait for battery to charge; time
out; all other indicators are on.
charged.
depends on battery size/charge state.
(2) Battery is faulty.
(2) Try another battery; ensure battery is
the right type. Call WSE for disposition.
SYSTEM OK indicator is out; (1) Any combination of the
Turn unit off; disconnect system power
AC ON is lit.
following fuses are blown:
connector. Replace any blown fuses; turn
+10V, +20V, -18V, -24V.
unit back on. If SYSTEM OK indicator
remains out, call WSE for disposition.
(2) Power supply is faulty.
If any fuses were blown, an overload
condition exists which must be corrected
before reconnecting system power
connector. Check all connections.
LOCK OK indicator is out;
(1) Lock circuit breaker tripped.
Turn unit off. Disconnect lock power
AC ON is lit.
connector and turn back on. If LOCK
OUT remains out, call WSE for disposition.
(2) Power supply is faulty.
Otherwise an overload condition exists or
there is excessive load capacitance which
is responsible for the tripping, and must be
corrected. Check specifications and
connections for all lock loads carefully.
No aux. power; all indicators
Aux. power fuse is blown.
Turn unit off and disconnect aux. power
are on.
connector. Replace any blown fuses; turn
unit back on. If any fuses were blown, or
continue to blow, an overload condition
exists which must be corrected before
reconnecting the aux. power connector.
Check all connections carefully.