My LG dryer shuts itself off during the normal cycle and a dotted

Sears Parts Direct is one source of the parts diagrams, https://www.searspartsdirect.com/model/1vc37q1bdj-003204/lg-wm3987hw-washer-parts . See the Dispenser assembly parts diagram for the water inlet valve. If you can watch the entire cycle, try turning off the shut-off valves for the washer inlet hoses after the rinse cycle and before the dry cycle starts. Water should not flow into the washer/dryer with the shut-offs closed.

I've seen inlet valve solenoids fail in the open position or in the closed position. I've never seen a control board that sent open messages randomly. (Sometimes, there is damage to the control board or corrosion or damaged wiring that stops the control board from sending the open/closed message to the solenoid.)

I hope this helps.

Cindy Wells

will it shut off if you run it on time only mode?

It sounds like you have a plugged up vent causing air to try to blow out around door instead of out vent. Also check door latch to see if anything is broken.

remove the bottom panel there should be a tech sheet taped to it and it will tell you how to get it into diagnostics,have you checked the simple things like cleaning the vent line and the duct where the lint filter slides into?alot of problems start from the dryer not getting cleaned out regularly,an easy thing to check is just remove the vent line from the back and run it,if it runs good you know the line is clogged,all a dryer does is spin the clothes,heat up and move air if the air isn't moving it won't dry the clothes.these machines have 1 to a few computer boards in them so whithout any error codes or being there to see it you can't just give an answer that will fix this,check around for the tech sheet or google your model number to find out how to put it into diagnostics and check and clean out the dryer and vent line and go from there.

Fix the water leak first. Got a sun roof? Water in the BCM will cause all sorts of funny things, to included not letting you car start and run. Fix that leak first( Like today or tomorrow), then find your BCM(body control module) , pull it out and remove the cover around it. Wipe it off with a cloth, use a blow dryer and dry it up use the dryer to dry out the plugs also, then wipe it off again with another cloth. You let moisture set in it too long, it could kill it...

Hello Biff

You should the the following.

Level the dryer
Check the drum belt
Check the drum support rollers
Check the idler pulley
Check the glides
Check drum bearings
Check the blower
Check the baffles

Best Regards
Neciforo Llanto

if it works on auto but not on time you have a bad timer,it's not counting down,it's better to use auto anyway,when the clothes dry the dryer shuts off on it's own,this way your not using extra electricity,if your clothes dry in 30 minutes and it's on 60 minutes it will still run after the clothes are dry on auto it doesn't.if you open the door and look around the opening you'll see a tag with the model number,your missing a couple of letters on the model number.

The vent is clogged.  To make sure, disconnect the vent from the dryer and run the dryer normally.  If your clothes dry normally, then have a professional vent cleaning company take care of the vent.  
The cooling light will always stay on during the run.  When it is blinking, the heat has stopped and is in the cooling process.
If there is no heating, you have a problem with the high limit switch or something else electrical and needs to be addressed by a qualified LG technician.

CD means cool down, press the pause start button, the door lock will open. It is an anti crease cycle. It mentions it in the owners manual, but it is hidden deep in the drying section.
Sgt 48