THETFOR TECMA MACERATOR NOT FLUSHING PROBLEM SOLVED! I’m posting this resolution for those experiencing similar issues. The wife and I continued to troubleshoot the problem first by searching the internet over the Memorial Day weekend since Thetford support wasn’t available. Found a couple of references to heat related issues with the controller and tank sensors but nothing definitive.
Wife went out Monday morning and pushed the flush button and it worked. Thinking it had somehow magically fixed itself, we periodically went out to test it. About noon wife told me it failed. She said it sounded like might be temperature related since temps were well over 90 with temps inside temps matching that. Tuesday morning the toilet was once again working. I turned on the A/C and set the thermostat to 79. Toilet continued to function into the heat of the day. Cut off the A/C late afternoon and temp inside climbed to 90 and the toilet failed.
Called Thetford the next morning and went through the problem and troubleshooting with them. The tech admitted that there was a known heat related issue with controllers delivered 2015-2016. Ordered a new controller from RV & Boat Accessories for $240 including second day ground. Also available on Amazon and other RV and marine parts suppliers. Install is simple plug and play.
Inside temp at 95 and it’s still flushing!
