Trane 4TYK8536B1000AA Technical & Service Manual page 56

Dc-inverter air conditioners
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Note:
Overload in cooling mode
sr.
SS-SVM001A-EM
The root cause
1
The refrigerant is excessive.
The outdoor ambient temperature is too
2
high.
Short-circuit occurs in the air outlet and air
3
inlet of the outdoor unit.
The outdoor heat exchanger is dirty, such
4
as condenser.
The speed of the outdoor fan motor is too
5
low.
The outdoor fan is broken or the outdoor
6
fan is blocked.
7
The air inlet and outlet have been blocked.
8
The expansion valve or the capillary fails.
Table 2 Overload in cooling mode
Discharge the refrigerant, and recharge
the refrigerant referring to the rating label.
Please use it within allowable temperature
range
Adjust the installation of the outdoor unit
referring to the user manual.
Clean the heat exchanger of the outdoor
unit, such as condenser.
Check the outdoor fan motor and fan
capacitor.
Check the outdoor fan.
Remove the obstructions.
Replace the expansion valve or the
capillary.
13. Troubleshooting
Corrective measure
55

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