Norcold 621L code H ??

Wnjj, I checked out your repair thread and have to say that was an outstanding repair job!!

3 tons

Thanks for all your help!! I change out the board about a month ago but don’t recall getting any codes...Luckily, it’s working fine on LPG, so I’ll do some trouble shooting tomorrow!

Thanks to All !

Last year the 621 in our Eagle Cap failed on AC (but with an AC relay stuck code). Maybe we got bad relays from the same batch? :D. Check out the fuse and element itself but if those check out OK, check out my $5.80 relay replacement here: https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/29727778.cfm

Looks like it has an issue with the120 volt element.
Norcold H code
Maybe blown fuse on board

May find the answer on this page.

If it works on gas but not AC this is probably on track.