59 / E59
Equipment is experiencing reversing-valve faults
This code typically points to
- Faulty reversing-valve body or coil
- Low refrigerant charge
- Faulty pressure sensor
- Faulty control board
Next checks to confirm
- Check reversing-valve body/coil
- Check refrigerant charge
- Check pressure sensor
- Replace control board if necessary
Escalation
Reversing-valve fault
Reset behavior
Clears after valve/refrigerant/sensor condition is corrected.
Urgent
Fix now