4
4. Troubleshooting and Correcting Problems
TROUBLESHOOTING CHECKLIST
Problem
Probable Cause
Solution
No clicking sound is heard from
AC adapter is not properly
1. Be certain larger cable from
DU3 detector unit.
connected.
detector unit is connected to
AC adapter.
2. Be certain adapter is
plugged into AC electrical
outlet.
3. If clicking sound is still not
heard, call HME. *
Clicking sound is heard at
The timer system or
1. Short the connectors at
DU3 detector unit, but
DU3 detector unit may be
vehicle detector input of
drive-thru timer system
malfunctioning, or the cable
timer system control unit.
is not activated.
from the timer system may be
(See Figure 5)
defective.
C
If vehicle-detect signal is
not
not
heard or seen, timer
system is defective.
Check timer system.
C
If vehicle-detect signal is
heard or seen, timer
system is OK. Problem
may be with detector unit.
Call HME.
2. If cable is spliced, short the
timer system cable wires at
the splice. (See Figure 5)
C
If vehicle-detect signal is
not
not
heard or seen, cable
from timer system is
defective. Replace cable.
C
If vehicle-detect signal is
heard or seen, detector
unit is malfunctioning.
Call HME. *
* For assistance, call HME Customer Support at 1-800-848-4468.