ER1 F2 error on Whirlpool Super Capacity 465...

Question

Hi, our Whirlpool Super Capacity 465 model RF386PXE after it reaches desired tempature will often begin locking and unlocking for self-cleaning and an ER1 F2 code will appear. Rebooted circuit breaker but still occurs more than not. Can anyone tell me what the error code means and how to fix it? Big thanks in advance from Pennsylvania home!