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12B - High pressure on compressor

Alarm conditions:

Reached maximum allowed pressure (18 bar), by presostat (RHP Standard).

Possible causes:

  1. Low airflow through heat exchanger,
  2. Faulty high pressure presostat,
  3. Clogged or blocked EXV,
  4. Excessive refrigerant,
  5. Controller failure.

Troubleshooting:

 

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