1302 — High pressure trouble

What does 1302 mean?

This code indicates an abnormally high pressure in the refrigeration system, detected by the high-pressure switch (63H) or sensor (63HS) exceeding 4.15 MPa during compressor operation. This often points to issues preventing proper heat dissipation.

• Outdoor stop valve not fully open.
• Clogged or broken pipes in the refrigerant system.
• Malfunction or blockage of the outdoor or indoor fan motor.
• Short-cycling of the outdoor or indoor unit.
• Dirty outdoor heat exchanger or clogged indoor unit filter.

Click steps to track your progress.

1. 1

   Ensure the outdoor stop valve (liquid/gas) is fully open. These valves control the refrigerant flow and must be completely open during operation.

2. 2

   Check if the outdoor fan is rotating properly during operation. If not, inspect the fan motor for obstructions or signs of malfunction.

3. 3

   Verify that the indoor unit's fan is rotating correctly during operation and that its airflow is not restricted.

4. 4

   Inspect the outdoor unit for any debris or dirt on the heat exchanger fins and clean them thoroughly if necessary to ensure proper heat exchange.

5. 5

   Check the indoor unit for clogged filters or dirt, and clean or replace them to ensure adequate airflow.