Check point 4. Check the solenoid coil and 4-way valve
NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-36.
• Solenoid coil
Remove CN30 (for 09/12 model) and CN500 (for 14 model) from PCB and check the resistance
value of coil. Resistance value is 1.88 kΩ~2.29 kΩ.
→ If it is open or abnormal resistance value, replace solenoid coil.
• 4-way valve
Check each piping temperature, and the location of the valve by the temperature difference.
If the value location is not proper, replace 4-way valve.
↓
Check point 5. Replace main PCB
If Check Point 1 to 4 do not improve the symptom, replace main PCB.
↓
End
2-21. E: 99. 4-way valve error (Outdoor unit) - (03-25) - 2. Troubleshooting with error code
TROUBLESHOOTING
TROUBLESHOOTING
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