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12.3.2.9
High temperature protection of condenser (ODU P5)
When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor pipe
temp. less than 52°C.
High temperature protection of
condenser
High temperature protection of
condenser
Check whether the
condenser temperature is
Higher than 65°C
Check whether the
condenser temperature is
Higher than 65°C
Yes
Check whether the
resistance of condenser
temp. sensor is normal
refer to the
Appendix
1
Check whether the
resistance of condenser
temp. sensor is normal
refer to the
Appendix
1
Replace the temperature sensor
Replace the temperature sensor
No
No
Check whether the outdoor
ambient temperature is
higher than 50
℃
Check whether the outdoor
ambient temperature is
higher than 50
℃
No
Stop the unit
Stop the unit
Yes
Check if the outdoor unit
ventilation is good
Check if the outdoor unit
ventilation is good
Yes
Make the outdoor unit ventilate well
Make the outdoor unit ventilate well
Check whether the heat
exchanger is dirty
Check whether the heat
exchanger is dirty
No
Clean the heat exchanger
Clean the heat exchanger
Yes
Check whether the refrigerant
system is ok
Check whether the refrigerant
system is ok
Replace outdoor main
board
Replace outdoor main
board
No
Refrigerant is not enough add the
refrigerant
Refrigerant is not enough add the
refrigerant
No
Check if the outdoor fan runs
properly
Check if the outdoor fan runs
properly
please refer to the solution of fan
speed has been out of control
malfunction . Find out the cause and
have it solved.
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
Correct the connection
Correct the connection
No
Yes
Check the connection
between temperature
sensor and PCB.
Check the connection
between temperature
sensor and PCB.
Yes
Summary of Contents for 38QUS018DS2 Series
Page 16: ...16 78 3 4 A5 Duct ...
Page 19: ...19 78 ...
Page 20: ...20 78 5 Wiring Diagram Outdoor 38QUS018DS2 Outdoor 38QUS027DS3 ...
Page 21: ...21 78 Outdoor 38QUS036DS4 High wall 42QHF009DS 42QHF012DS 42QHF018DS ...
Page 22: ...22 78 A5 Duct 42QSM009DS A5 Duct 42QSM012DS 42QSM018DS ...
Page 23: ...23 78 Four way cassette 42QTD009DS Four way cassette 42QTD012DS 42QTD018DS ...
Page 24: ...24 78 Console ...