Rich, sorry for the late reply. It is a model 325 and he can not find a p/n for the control panel. The fuse that was replaced was found in a box found down on the lower right in front of the steps. It seems like it would be a 12V problem that ties the the HWH system and airbags together. Something that is common to both. I hope your readers are able to help. He does not use a computer so if someone that is sharp on this may have to call him. Let me know and I'll get his ph # for them or have him call them.
Thanks,
Gary