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Midea air conditioner error codes. Indoor unit error code explanation: R series: ... E1, Indoor / outdoor units communication protection. E2, Zero-crossing signal error ... E4, Outdoor unit temp. sensor or connector of temp. sensor is defective.
the unit is not draining properly. unplug it from the current outlet, check behind there should be two places to drain the machine. unplug the two drain plugs in the back and let the water empty out. the e4 error message comes up when the unit is filling up with water.
E4 is an"Abnormality of Outdoor Unit." There are many reasons. 1. High discharge temp due to condenser coil blocked or less rpm of fan motor. Clean coil or replace fan capacitor.2. No gas and hence pumping oil. Find leak and arrest it. Recharge gas.
You want to look up Guangdong Chigo who are the manufacturers of this unit. They have a list of error codes/service manuals etc on their site.... From the PDF:
"1、Check whether the operation current and power of
the unit is abnormal.
2、Check whether the speed and wind quantity of the
fan is normal, otherwise replace the outdoor fan
3、 Check whether the surface of the condenser is too
dirty, and it should be cleaned when it is too dirty.
4、Check whether the unit is short of the refrigerant,
add the refrigerant after leakage detection and
5、 Check whether the sensor and electric control
board is normal, otherwise replace the board."
This error message is because the water tank is full. Just empty it out
and put it back in and the AC will start to work again. If that doesn't
work then I don't know what the problem is, but I just had the E4 error
and did that and the problem was solved.