Model: KFR-58LW/N (BPJXF)
Fault Symptoms: Not cooling or displaying E2.
Repair Process: The user reported that sometimes the cooling function worked normally, while other times it displayed E2. The E2 fault indicates either a broken CT coil or a fault in the CT detection circuit. After removing the control board and checking the coil resistance with a multimeter, everything appeared normal. The loop's resistor-capacitor components were also found to be normal at the Beijing Midea Air Conditioner Repair Center. A detailed inspection of the solder joints on the circuit board revealed signs of de-soldering between the CT coil and the circuit board. After re-soldering the joints with a soldering iron, the unit was tested for over a month without any issues.
Repair Measures: Re-soldered the joints with a soldering iron. After testing the unit for over a month, everything functioned normally.
Haier KFR-58LWN (BPJXF) air conditioner, displaying fault code E2.
Source: Beijing Haier Air Conditioner Repair Phone Number http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3467495.