Warning Z1 Too high discharge gas temperature — High discharge gas temperature warning

What does 5310 mean?

This warning is issued if the hot gas temperature (TR6) exceeds the maximum limit (90 or 115°C) for more than 60 seconds. It relates to excessively high suction gas overheating.

• Suction gas overheating is too high.
• The electronic expansion valve is not regulating properly.
• Sensors TR5 or JR0 are providing incorrect readings.

Click steps to track your progress.

1. 1

   Compare the read value from sensor TR5 with an external thermometer.

2. 2

   Connect a manometer to the refrigerant circuit and measure the low pressure. Compare the evaporating temperature value from JR0 with the measured value.

3. 3

   Use a magnet to manually change the position of the electronic expansion valve (EEV) during operation to check if it's stuck.