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- Emergency stop fault relay on optional board in On position.
- General fault LED on console lit steadily.
Display:
● Resetting:
- Once the input closes, acknowledge the fault by pressing RESET on the console.
6.8 Fan fault (circuits 1, 2 and 3)
● Operation :
- As the fan faults are wired in series, there is only one fan fault input (available only if P2 = air-to-water).
● If a fault occurs:
- Compressor remains on.
- Other fans remain on.
- Machine fault output on.
- "Fault on 3 circuits" output on.
- Fan fault relay on optional board in On position.
- General fault LED on console flashes.
Display:
● Resetting:
- The fault is automatically acknowledged when the input closes.
6.9 External fault
● Operation :
- This on/off input is reserved for immediately shutting off the machine in the event of adverse conditions (overvoltage, undervoltage, etc.).
● If a fault occurs:
- Compressors turned off.
- Pumps turned off.
- Machine and circuit fault output on.
- General fault LED on console lit steadily.
Display:
● Resetting:
- The fault is automatically acknowledged after 2 minutes.
6.10 Compressor 1, 2 or 3 protection ("SE" box)
● Operation :
- The reset outputs on the "SE" protection box are enabled when power is applied to the board.
- These three inputs monitor the operation of each compressor.
- They are associated with the operation of their respective circuits (phase loss - rotation - winding temperature - discharge temperature).
● If a fault occurs:
- Compressor turned off.
- Compressor X protection fault relay on optional board in On position.
- Circuit LED on console lit steadily.
Display:
● Resetting:
- The fault is acknowledged pressing the RESET button. The compressor X reset output on the circuit opens for 5 seconds then is read
5 seconds later.
6.11 Discharge fault on circuit 1, 2 or 3
● Operation :
- This information is sent by a sensor on the discharge pipe. The maximum discharge temperature is set in parameter P51.
► If < 5 shutdowns occur in 24 hours
● If a fault occurs:
- Compressor turned off.
- 5-minute time delay (disabled in test mode)
- Circuit fault output off.
- Circuit X discharge temperature fault relay on optional board in Off position.
- Circuit fault LED on console flashes.
- The number of faults over a 24 hour period is managed.
UNIT STOP
EMERGENCY STOP
FAN FAULT
UNIT FORCED STOP
EXTERNAL FAULT
CIRCUIT X STOP
COMPRESSOR SAFETY