Model Number: DV419AEW/XAA
Brand: Samsung
Age: 1-5 years
Having some difficulty with my dryer. This will be my second repair for the same issue. The first time, I found that a wire was burned up near the heating element. It was the wire that ran from the hi-limit thermostat to the coil (blue wire). Well, we replaced this wire and all was good. Thermostats checked out fine as did coil.
Now about a month later.
Same issue where there is no heat but dryer will spin and no code is set. Pull apart dryer again and run same checks. Coil shows no continuity to frame of element and reads 10.3 on a digital multimeter across the two connection points for the coil. Hi-limit and cut-off both read 0.7 and the thermostat by the blower (thermostat 1) reads 0.8. I've checked the wires where I made the initial repair to ensure that they hadn't burned up or failed by giving them a gentle tug to ensure contact was good where I had to crimp on new connectors.
The first time there was a moderate accumulation of lint in the dryer but that was cleared out. This time there was no accumulation of lint but right before I put in the most recent load (the one that didn't dry), I noticed the lint screen had an excess of lint, which I cleared out. I can't seem to get the point across to everyone in the household that the screen has to be cleared every time. I want to point out that the lint screen was cleared before starting this last load that didn't dry and no one brought up complaints about the previous load not drying.
Also, I checked for proper incoming voltage and got 241 volts across the two verticals on a 4 prong outlet and 120v at each hot to neutral check.
According to the technical manual for this unit the possible causes are Hi-Limit trips easily or is open, regulating thermostat trips easy or is open, membrane switch open, check thermistor. I've verified the thermostats aren't open but not sure how to check if they trip easily. I don't know what a membrane switch is. I don't know how to check thermistor.