DLEX2501W high side thermostat failed. Replaced. Worked fine about an hour with heat. Heat stopped working again. Same symptoms as before: Runs 2 min with no heat, then error code nP.
Long version (and quite relevant):
Had an older Kenmore in same location working around 3yrs. High side thermostat went out, bought kit, and replaced several sensors/stats on heating element. worked fine.
Few months later, got used LG DLEX2501W w/bad roller. replaced roller, worked fine aprox 2yrs. high side stat went out. Failed with code nP. replaced stat. Threw code nP 1 time, then no code, and worked fine for about an hour. Again no heat and code nP.
I read that nP is wiring issue. Checked wiring on outlet, it was correct, however service panel had L1 and common reversed. Red on neutral, white on HOT! Yeah.... I promptly corrected that.
Anyway, I have not replaced the high side stat a second time, but I'm still getting nP and the 2 minute run time, even on 'Air Dry'
The authorized LG part is only $8, but I dont want to keep repeating the same mistake. Unit was no problem/worked well for 2yrs.
My concern is that incorrect wiring could have damaged the control board. Frankly I'm amazed we havent been electrocuted I'll throw another $8 at it blindly, but it's more about the time at this point. Ordering, waiting, disassembly etc.
Any hep would be appreciated.