Error code 44 - External air temperature thermistor on LG Inverter V model LSU121HSV3. Need diagram to identify which component is faulty

Washing Machine Fault Codes

These fault codes are written for washing machine repairers and not for the general public and they assume a certain level of competence on the part of the user in diagnostic routines. I have added some notes to try to assist you in determining the nature of the fault you have but, you will still need to investigate each failure on its own merits.

Please check that any washing machine spares recommended are suitable for use on your particular model and serial number. Please, don't guess or assume as spares can be altered on a production run with the same model number having several different alternative components used.

E1
Not filling in allocated time

This is essentially a fill timeout error which will normally mean that either the water isn't on or that an inlet valve has failed. We do list the generic water inlet valves for Samsung washing machines in this section and, if you're clever you can use one of those by altering the connections but, if you need the genuine one specific to your model please contact us.

E2
Pump won't empty - not draining

As usual with these error codes for not draining the first thing to do is check the pump filter. When replacing the drain pump there are two basic options, the genuine one from your manufacturer or the cheap version which is essentially the same pump.

Also see below about detergent use as it applies to drain errors as well as overfill error codes.

E3
Overflow - overfilling with water

This fault code tells you that the washing machine has detected an overfill situation and, usually, they will stop and drain for safety then report the error code above.

This error can be caused by poor quality detergent or overdosing detergent both leading to excessive foam. This foam traps air in the pressure sensor hose and falsifies the error of an overfill. If this is the case, if you leave the machine for an hour or so and try it again it should then be clear but, whatever you do when you try it again do not put more detergent in the machine.

If this solves it, adjust the detergent quantity or switch to a better quality detergent to prevent it happening again.

E4
Out Of Balance (OOB) detected

This is basically an imbalanced wash load detected that the machine has failed to sort out on its own and therefore couldn't spin to the full speed. Just sort the load and try it again.

E5
Water temp rising or falling too quickly

Normally an NTC temperature sensor or wiring to the sensor that's faulty.

E6
Water temp rising or falling too quickly

As above.

E7
Pressure switch

The error code is telling you that there is an error or fault somewhere in the pressure switch circuit, this could be the switch itself, the wiring or the main control module.

E8
Temp too high on low temp washes

Normally this will be the wash temperature thermistor or NTC that's faulty, please contact us if you need the thermistor with the model and serial number.

E9
Water leak, Water level has reduced

Basically this fault code means that the water level has dropped while the machine has been running so, it's either a leak, faulty pressure sensor, wiring, water escaping to the drain or the control PCB.

EA
Motor tacho generator error

Self explanatory fault code. Most manufacturers do not supply parts for their motors, only full motors and they can be model specific.

EB
Motor triac error

As above.

EC
Thermistor

A thermistor is a type of resistor whose resistance varies significantly with temperature, more so than in standard resistors. The word is a portmanteau of thermal and resistor. Thermistors are widely used as inrush current limiters, temperature sensors, self-resetting over-current protectors, and self-regulating heating elements.

Thermistors differ from resistance temperature detectors (RTD) in that the material used in a thermistor is generally a ceramic or polymer, while RTDs use pure metals. The temperature response is also different; RTDs are useful over larger temperature ranges, while thermistors typically achieve a higher precision within a limited temperature range [usually 90 °C to 130 °C].

As fault code E8

ED
Door Open

Close the door and restart the program!

If that doesn't cure the problem it will most likely mean that the door lock is faulty and there's two commonly used on Samsung washing machines, this one and this one