5201 <1402> (F5) High pressure sensor (63HS) trouble

What does 5201 <1402> (F5) mean?

This error indicates a problem with the high pressure sensor in the outdoor unit. Causes can range from a defective sensor, gas leakage leading to pressure drop, or issues with connections or the circuit board.

• Defective high pressure sensor.
• Decrease of internal pressure caused by gas leakage.
• Disconnection or contact failure of the sensor connector.
• Malfunction of input circuit on outdoor multi controller circuit board.

Click steps to track your progress.

1. 1

   Turn off the power to the outdoor unit at the circuit breaker for at least 5 minutes, then turn it back on.

2. 2

   Check the high pressure sensor (63HS) connector on the outdoor unit's circuit board to ensure it's securely connected.

3. 3

   Visually inspect for any signs of refrigerant leakage around the outdoor unit, such as oily residue.

4. 4

   If the error persists, there may be a need for professional diagnosis of the sensor itself or to check for refrigerant leaks.

5. 5

   A technician will likely check the pressure with a gauge and inspect the outdoor multi controller circuit board.