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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.
What make / model? Look up Manufacturers Customer help on the internet. There may be a description of that fault. With so many different makes , its impossible to say what an E4 error is , as different makes use this code for different faults.
There really isn't a standard for dishwasher error codes. Need to know the manufacturer and model number to proceed. This could be a fault with the float in the fill or overflow sensing that there's too much water. You might try removing the water and letting the machine dry out. Could be too much suds from combo cheap detergent and rinse agent.
E0 error - ensure pot or pan is placed correctly E1 error - the circuit has malfunctioned E2 error - the temperature sensor is opening circuit or short circuit E3 error - the voltage is higher (140 - 160V) for 3 seconds E4 error - the voltage is lower (80 - 100V) for 3 seconds E5 error - the cooktop surface temperature is too high E6 error - Internal electronic temperature is higher than normal for 3 seconds E7 error - Internal electronic temperature sensor is opening circuit or short circuit
E4 Outdoor activation of low pressure switch/ less suction pressure.
Check back pressure, which should be 60 PSI when ambient temp 98 degree.If not Short of gas- find leak and arrest. And do gas charging. Even due to indoor coil dust blocked also e4 arise. Clean the coil and reset it.
The e4 that displays on your air condition come up simply because there is an error during the operation of the system. E4 means Error 4 which is a code that is interpreted as low pressure switch.
E4 simply means there is low pressure switch, the pressure switch turns on automatically inside the air condition, so when you turn it on sometimes the switch jams and does not open so the air condition will be on but would not get cold because the switch jammed and it displays an error signal to let you know there is a problem in the system.