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Compressor Drive fault

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shahzad.engr123_apc
Lieutenant JG shahzad.engr123_apc
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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

Compressor Drive fault

Dear team,

We are using acrp102 cooling unit, suddenly it is showing alarm of Compressor Drive fault but it becomes normal after automatic/forceful restart.please find the attached logs and guide us.

Your prompt response will be highly appreciated.

Regards

MS

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BillP
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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

Hello Muhammad.

From the event logs I see the unit is experiencing a lot of cold starts. Unless this is someone manually flipping the breaker on the unit, I would suggest checking the incoming power to the unit. If there are fluxuations in the power coming in, this would cause the cold starts and could cause the compressor drive alarms.

A System Coldstart event indicates that the NMC (Network Management Card) has just been powered and has completed startup.

  • Power interruption to the NMC - If a device powering the NMC suffers an interruption of power, the NMC will restart when power is reapplied to that device.

The alarm codes on the vfd that you sent in have to do with the high head pressure switch. You should check that the condenser is working properly to get rid of the heat and check the connections to and from the high head pressure switch.

Thank you

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BillP
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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

Hello Muhammad.

From the event logs I see the unit is experiencing a lot of cold starts. Unless this is someone manually flipping the breaker on the unit, I would suggest checking the incoming power to the unit. If there are fluxuations in the power coming in, this would cause the cold starts and could cause the compressor drive alarms.

A System Coldstart event indicates that the NMC (Network Management Card) has just been powered and has completed startup.

  • Power interruption to the NMC - If a device powering the NMC suffers an interruption of power, the NMC will restart when power is reapplied to that device.

The alarm codes on the vfd that you sent in have to do with the high head pressure switch. You should check that the condenser is working properly to get rid of the heat and check the connections to and from the high head pressure switch.

Thank you

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shahzad.engr123_apc
Lieutenant JG shahzad.engr123_apc
Lieutenant JG

Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

Thanks alot

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shahzad.engr123_apc
Lieutenant JG shahzad.engr123_apc
Lieutenant JG

Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

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Posted: ‎2021-06-28 01:25 AM . Last Modified: ‎2024-03-18 11:30 PM

Dear L2SupportServices,

But there is another cooling unit installed in same location which is working fine, there is no error on that unit.

Regards

MS

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msg4t
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Posted: ‎2025-02-21 04:29 AM

In response to BillP
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Posted: ‎2025-02-21 04:29 AM

I have a piece of equipment that periodically gives the following alarm: "compressor drive fault". When the unit is checked, a reset is performed and the equipment returns to operation. Electrical inspection of the equipment's power supply has been done, and everything appears normal. What could cause this alarm? Could it be an indication of a fault in the compressor or the drive? An alarm for speed was also identified on the inverter. This happens over long periods of time, occurring every few weeks.

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