HA2 Alarm


HA2 Alarm



HA2 alarms should be addressed as soon as possible, otherwise permanent damage may occur to the compressor.

CellarPro cooling units are designed to trigger an HA2 alarm when the temperature at the condenser coils gets too hot. HA2 alarms generally occur when  

  1. The temperature at the rear of the cooling is too warm,
  2. Airflow at the rear of the cooling unit is restricted,
  3. The thermal load of the wine cellar or cabinet exceeds the capacity of the cooling unit, and/or
  4. The latent load of the wine cellar is overwhelming the cooling unit

When your cooling unit flashes an HA2 alarm, please do the following:

  • Make sure the cooling unit is installed properly; ie the wine cellar cannot be exposed to any of the air intake/exhaust from the rear of the cooling unit, and the air intake/exhaust from the front of the cooling unit must be completely captured inside the wine cellar.  To view examples of proper configurations, click on the following link: http://www.cellarprocoolingsystems.com/information-center_cp/cooling-unit-buying-guide/cellarpro-configuration-1800-series 
  • Check for appropriate ventilation at the rear of the cooling unit. If the space is too small or restricted for the hot air exhaust to dissipate, you may need to add a rear duct retrofit kit to separate the hot air exhaust and the fresh air intake.
  • Make sure there aren't any obstructions to the intake and exhaust at the rear of the cooling unit.
  • Clean the condenser coils and/or replace the filter at the rear of the cooling unit.
  • Cool off the ambient environment at the rear of the cooling unit
  • Turn off or remove any sources of heat inside the cellar (eg wine coolers, steam humidifiers, certain lighting)
  • Raise the Minimum Set Point to 60°F
  • Increase the Fon setting
  • Check for any gaps where the cellar door closes against the doorframe

If these actions do not resolve the issue, please contact us or reply to this email and provide the following information:

  • The serial number of the unit (located on a white tag on the side)
  • The dimensions (L x W x D) of the wine cellar (or cabinet) 
  • The dimensions of the area in which the cooling unit is ventilated
  • The dimensions of any glass walls, windows or doors in the cellar, and the type of glass (single or double pane)
  • The temperature in the area outside the cellar
  • The number that appears when you press the "SET" button for three seconds

We look forward to assisting you!