LCAC R32 Series
115
Service manual
4.4.17 J5 Malfunction
Malfunction conditions
If the sampling voltage is not 5V, the LED displays a failure code.
Possible causes
• Wiring mistakes
• Faulty overload protector
• System blockages
• Faulty outdoor PCB
Is thehigh
pressure protector
broken?
Is the outdoor ambient
temperature is higher than
50?
No
Stop the unit
Yes
Check if the outdoor unit
ventilation is good
Yes
Ensure that the outdoor unit
ventilation is functioning properly
Is the heat exchanger dirty?
No
Clean the heat exchanger
Yes
Check whether the refrigerant
system is functioning properly
Replace outdoor main
board. Is the problem
resolved?
No
J5 displayed
High pressure protection
Is the outdoor fan running
properly?
please refer to the solution of fan
speed has been out of control
malfunction . Find out the cause and
have it solved.
No
Yes
No
Yes
Yes
No
Replace high pressure protector
No
Are the high pressure
switch and main control
boar wired correctly?
Connect high pressure
switch and mian control board
Method: Disconnect the
plug. Measure the resistance
of the high pressure
protector, if the protector is
normal the value is o, Does a
problem still exist?
PART 6. TROUBLESHOOTING
Содержание J100Wi
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