LG F1403RD washer/dryer, dryer not heating up
First of all welcome to all ,
I have a F1403RD LG washer dryer but the dryer has suddenly stopped heating up. At first I would get error DHE roughly on 19 minutes into a 30 minute dry only setting.
After the error I replaced the dryer element and the Thermister dryer sensor the 2 prong job with parts from 4lg. I didn't replace the Thermostat in the metal dryer duct so could it possible be this? also, how do I test this ?.
even after both replacement parts were installed It still doesn't heat up on dry but the DHE error doesn't appear anymore and it goes to the end of the dry only cycle as normal but cold.
I also took the plastic vent dryer duct off the back of the tub and cleaned it out but there wasn't much in it as I had cleaned this about a year back.
I'm now at a loss as to what the problem can be. How do I now check to find out what's causing the error ? any fuses or blocked pipes I should look for ? Any help would be greatly appreciated.
thanks
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
LG F1403RD washer/dryer dry cycle runs cold after DHE error
- The problem
- LG F1403RD washer/dryer stopped heating on the dry cycle. Initially it showed DHE at about 19 minutes into a 30-minute dry-only programme. The owner replaced the dryer element and the 2-prong thermistor dryer sensor, after which the DHE error stopped, but the machine still completed the dry cycle with no heat.
- Likely cause
- Most strongly supported diagnosis is an open or failed thermal overload cut-out (TOC) near the dryer element, or another heating-circuit temperature device being faulty. The exact failed part was not confirmed.
- What fixed it
- Check the thermal overload cut-outs associated with the dryer heater assembly, as these were identified as the only fuses. Also distinguish correctly between any TOC and NTC sensor before testing or replacing parts. The exact repair was not confirmed in the discussion.
- Checks to try
- DHE fault appeared roughly 19 minutes into a 30-minute dry-only cycle
- Dryer element replaced
- 2-prong thermistor dryer sensor replaced
- Machine then completed the dry-only cycle without DHE but with no heat
- Plastic vent dryer duct removed and cleaned
- Parts or tools mentioned
- Dryer element
- Thermistor dryer sensor
- Thermal overload cut-out (TOC)
- NTC stat
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
The only fuses are the TOCs (thermal overload cut-touts). There is usually more than one and they are usually close to the dryer's element. It can be difficult to decide if a device is a TOC or an NTC stat. I have some articles here that might help -
Washer dryer not heating on dry cycle
How to test an NTC thermistor
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