I have my manual out. It states that for mix motor overld - mixer motor amps were high, check for foreign material in mixer chamber, seal leaks, motor shorts.
I guess the muratic acid could break something loose that is causing the blockage.
The Electrode cleaning - abreviated version
1. flush several times.
2> turn off water supply and flush till dry.
3 turn power off to unit.
4 disconnect white red and orange wires at control box.
5plastic bucket mix 1.5 pints muratic acid with 3 gallons water.
6 pour solution into toilet and flush till bowl is dry
7 pour 1 gallon of fresh water into bowl to dilute any acid remaining
8 allow to stand for a minimum of 45 minutes.
turnn water supply and flush only the toilet a minimum of 10 gallons of water to dilute and discharge muratic acid solution.
reconnect wires and turn power back on.
Keep in mind that the manual does not have this listed for a mix motor overld.
Good luck
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