Been getting the error message "heater too hot" on my Artesian Elite Spa. Flow seems to be fine, water balanced, no scaling that I can detect. Even got the error with the filter off. Looked at spa pack and noticed black/burnt aux board for heater the plug from heater is crispy. I have found the replacement board but trying to fine the heater plug. Anyone know what plug that is? Also, any idea why this could have occurred? Stuck relay? Thank you in advance.



