6/4/21 workday

1st job:

This job was an LG Refrigerator with the freezer on top, the complaint was that the refrigerator wasn’t cooling.

Per usual what I do is peel back the evaporator coil to see what is going on inside the coil…

 

In this photo you can see the frost coil is uneven, slight frost build up on top a bit thick on the bottom, and scarce in the middle somewhat…..

Typically this means that the evaporator fan motor is not operating, the fan was indeed not operating when I opened up the fridge in this model, however I wanted to be thorough so I went to check for voltages at the board to make sure the heating element and thermostats were functioning correctly.

 

So I put the refrigerator in test mode, I test for voltages on the heaters circuit, I get 120 volts which is specifications, I check the temperature sensor resistance it is 31 kohms which is within specification. I check the condensor motor it is at 120, and I check the evaporator motor, I get no voltage from the evaporator motor at all.

So I now know for sure it is the evaporator and nothing else. The two pictures with all of the lines are the schematic/wiring diagram. This is what we techs use in order to diagnose problems in these machines, it is crucial to know how to read these documents in order to do our work.

I posted these pictures to give you a glimpse into our world.

Anyways I have the customer order the parts and I will come back to install….

 

2nd job:

This job is an LG front load washer, the customer is complaining about a loud noise when he operates the machine…

I let it run and it sounds like a loud grinding noise, I take the back cover off to observe the motor function as this is a direct drive unit meaning the drum is attached directly to the motor which causes it to spin and not a belt and pulley system….

So anyway I open the back and the rotor and stator are corroding…… in other words the motor is starting to corrode from rust, this is a safety issue and both the stator and rotor need to be replaced which would cost at least 500$. The customer opts to replace….

 

 

3rd job:

This is an LG front load washer, the customer is complaining about a leak…. I let it run and notice water coming out from the front left corner from under the drain pump…..

Anyways I disassemble the machine, the top comes off, then the door gasket seal, then the front of the washer….. I don’t like to disassemble LG front loaders because the door gasket seal can be difficult to reattach depending on how old the machine is, definitely is not my favorite…

Anyways I notice water underneath where the fluid dispenser would be and under the drain pump area leaking on to the floor, I looked and checked every hose connection and could not see anything, I lifted the drain pump assembly and did not notice anything out of the ordinary…..

I had the customer order  a drain pump casing incase there is a slight crack, but the issue may be with the dispenser itself but I did not notice any water coming from there….

It can be hard to diagnose leaks in these machines hopefully I got it right…..