F70 means a overheating condition is sensed causing dryer stop until temperature reaches (drops) below set level - determined by manufacturer.
Can be caused by different contributing factors:
- poor airflow
- blocked air flow screen inside tumbler
- clogged lint screen
- slow tumbler (low revolutions)
Make sure your air flow is adequate by really cleaning the duct (I stuck my hand through the wall duct and scraped off old hard lint that can collect humidity & even cut my finger). Also make sure your vent hose does not have any unnecessary elbows or squiggles in it.
Once you have verified your electrical connections as stated earlier in this posting, run a normal cycle with towels or something of the like so as to reset the sensors in the dryer.
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