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13B Low pressure on compressor

Alarm conditions:

Reached minimum allowed pressure (0,5 bar), by presostat (RHP Standard)

Possible causes:

  1. Low airflow through heat exchanger,
  2. Faulty low pressure presostat,
  3. Clogged or blocked EXV,
  4. Refrigerant shortage (refrigerant leakage),
  5. Controller failure.

Troubleshooting:

 

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