HA2 Alarm

Support / Troubleshooting & Do-It-Yourself Repairs

HA2 Alarm

If you have an HA2 alarm, turn off your machine IMMEDIATELY and contact us at 877.726.8496 or contact us via email.   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 condenser fan (at the rear of the cooling unit) isn't turning, and/or
  2. Airflow at the rear of the cooling unit is restricted or too small for the hot air exhaust to dissipate, and/or
  3. Ducting at the rear of the cooling unit is too restrictive, and/or
  4. The thermal load of the wine cellar or cabinet exceeds the capacity of the cooling unit, and/or

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

  • Check to see if the condenser fan is working, then TURN OFF THE UNIT IMMEDIATELY
  • 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/cellarpro-installation-guides
  • 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, or reducers in the ducting.
  • 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)
  • Check for any gaps where the cellar door closes against the doorframe

If these actions do not resolve the issue, we will be glad to assist you.  In order to troubleshoot, start with the unit "Off" for 10 minutes, then gather the following information:

  • If the condenser fan was not working when the unit was on, leave the unit "Off'", and check to see if the fan blades will spin freely
  • If the condenser fan is working, then turn the unit "on" and wait for the SNOWFLAKE and FAN icons to light up
  • Once the 2 icons are lit, press the "SET" button for 3 seconds and record the number
  • Press the "SET" and "DOWN" buttons together until the control flashes, then scroll until you see HY, press "SET" and record the number
  • Press the "SET" and "DOWN" buttons together until the control flashes, then scroll until you see dP3, press "SET" and record the number. This number must be recorded 4 more times (5 total) at 2 minute intervals over a 10 minute period.
  • The fan speed setting (eg Low, Medium or High).  Please note that 1800 Series cooling units do not have fan speed settings.

We look forward to assisting you!