CARLO GAVAZZI RSBS Manual Del Usuario página 4

Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for
hard reset
Action to recover alarm
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for
hard reset
Action to recover alarm
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for
hard reset
Action to recover alarm
Troubleshooting
01/06/20 RSBS Troubleshooting Guide - Rev 1.0
4
Start capacitor relay protection
This alarm will be triggered when the RSBS detects a faulty start capacitor electro-
mechanical relay (EMR).
5 minutes
2
The alarm will self-recover after the recovery period. Before attempting a second start, the
RSBS will check the status of the EMR. If the EMR is found to be still faulty, the RSBS will
remain in the alarm state. User shall then reset the mains supply to reset the RSBS.
• Check that the proper RSBS model (start capacitor size) is being used.
• Check for proper wiring.
5
End of ramp (EOR)
The RSBS will trigger this alarm if it cannot start the compressor within a maximum of 1
second. The EOR alarm will be triggered if, after the initial current limit and the subsequent
HP phase (during ramp-up) the compressor does not reach nominal speed within a maxi-
mum of 1 second. The EOR alarm will prevent the RSBS from switching a high transitional
current.
Note: The EOR alarm may also be triggered if there is a damaged run and/or start capaci-
tor. This results in less starting torque and therefore the compressor might not start.
5 minutes
4
The alarm will self-recover after the recovery period. If during the second consecutive at-
tempt, the same alarm is triggered, the RSBS will remain in the alarm state. User shall then
reset the mains supply to reset the RSBS.
• Check that the proper RSBS model is being used.
• Check for high pressure difference during compressor start.
• If pressure difference is too high, allow more time between starts.
• For the models RSBS...C00 check the value of the run and start capacitors. If the capaci-
tance value is lower than expected, replace the capacitor.
• For the models RSBS...C10/C17/C24, check the value of the run capacitor. If the capaci-
tance is lower than the rated value, replace the capacitor.
6
Internal over-temperature alarm
The RSBS will trigger this alarm if it measures an internal temperature > 115ºC for ≥ 1s
Typically 5 mins – RSBS might need a longer recovery period depending on the surround-
ing temperature level.
4
The alarm will self-recover after the recovery period.
• Check that there is proper ventilation around RSBS.
• Ensure that the vents of RSBS are not obstructed.
EN
4
Carlo Gavazzi Ltd.