E3 error, compressor does not start or stops quickly after starting

Safety first: This fault involves high-voltage and high-current components. Always unplug the unit before removing panels. Do not touch compressor terminals with power connected.

• Step 1 – Check power supply:
  • Verify the outlet voltage with a meter if possible (should be close to the rated voltage on the nameplate).
  • Avoid using long, thin extension cords; plug directly into a properly grounded outlet.
• Step 2 – Inspect compressor area:
  • Remove the rear or side panel to access the compressor compartment.
  • Check for burnt smell, melted wires, or discoloration around the compressor terminals and start relay.
• Step 3 – Test start capacitor (if equipped):
  • Locate the Compressor Start/Run Capacitor (metal or plastic can with two or more terminals).
  • Discharge it by shorting the terminals with an insulated resistor or by following manufacturer guidance.
  • Use a capacitance meter to compare its value to the rating on the label. Replace if more than ±10% out of spec or bulged/leaking.
• Step 4 – Replace start components:
  • If the relay or capacitor is suspect, replace with a matching Pro Breeze Compressor Start Relay and/or Pro Breeze Compressor Capacitor.

Warning: If the compressor is mechanically locked or drawing excessive current, it may require professional diagnosis and replacement. Do not attempt to open or braze refrigerant lines yourself.