107026-11-EN FR26 ROW 302 Printed in France 33
7. Troubleshooting
Symptom Cause Action
E1: on / E2: on
R1: on / R2: on
R3: off / R4: flickers
Relay contact stuck in the closed condition Immediately exchange the relay board
See 8.4.
No indicator lits on Barrier not powered up Check:
- supply voltage specified on the plate
- mains supply
- wiring of the supply plugs
- the fuses (See § 8.3)
E1 lits on
R4 lits on
R2 lits on
R1 lits on
Barrier under test
Check:
- connection ¬ - EARTH or C4-C5
(automatic mode without FSD monitoring),
C4-B3 (other modes)
in receiver supply plug
E1 lits on
E2 lits on
R4 flickers
R2 lits on
Barrier in start/restart mode
Check:
- connections on the monitoring loop C3-C5
- press the start and restart push-button
- if the failure remains, change the relay
board (See § 8.4)
E1 lits on
E2 lits on
R3 lits on
R1 flickers
Barrier in function
Reception signal margin is weak
(Barrier dirty or misaligned)
Check:
- cleanliness of the light paths (see § 8.2)
- mechanical alignment (see § 5.2)
- Scanning range
Barrier functions all right
with random erratic
detection
E1 lits on
R2 lits on
R1 lits on
Unacceptable high voltage line transients
(over the IEC 801-4 norm)
Check:
- presence of RC elements on inductive
loads
- quality of the power supply
- presence of electric connections on the
earth
- quality of connections on C3-C5:
make it as short as possible
- switch the power off and on
Barrier functions all right
with random erratic
detection
E1 lits on
E2 lits on
R2 lits on
Unacceptable light interference (over the
product allowance).
Use a special optical filter (refer to § 9.3).
Note: the other indicators are off.
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