Error handling instructions for Split outdoor unit
Split ODU – 6 720 817 722 (2015/06)
22
2.10 Error code 35
2.10.1 Error diagnosis and countermeasure flow chart
Display
code
Title Cause of error
Check point & Normal
condition
35 Low
pressure
error
• Excessive
decrease of
pressure
1. Defective low pressure
sensor
2. Defective unit fan
3. Deformation because of
damage of refrigerant
pipe
4. Defective unit EEV
5. Covering / clogging (unit
covering during cooling
mode / unit filter clogging
during heating mode)
6. SVC valve clogging
7. Defective unit PCB
(inverter)
8. Defective unit pipe sensor
Table 19 Error code 35
Are communication
cable / piping normal?
No -> 1. Check communication / piping
correction
Yes
Is amount of refrigerant
normal?
No -> 1. Check for pipe crack or trace of
refrigerant leakage
2. Weld / reconnect the cracked
portion
3. Adjust the amount of /
recharge refrigerant
Yes
Is the strainer OK?
1)
1) If the temperature difference between inlet and outlet of strainer is so large that
frost or ice formation can be seen or confirmed then clogging of strainer should
be checked (Notice: it is not full ice forming of strainer, in case that there is not at
inlet portion but at outlet portion)
No -> 1. Replace the strainer
Yes
Are the value of manifold
gauge and pressure
sensor the same?
(Is the low pressure
value actually low?)
No ->
1. Replace the pressure sensor
Yes
• Check unit LEV
• Check unit PCB
(inverter)
• Check unit
installation
conditions
Table 20 Error diagnosis and countermeasure chart
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