Thetford RV fault codes

Thetford makes RV toilets (including Tecma electric models) and sanitation products. Status and faults are shown by coloured tank LEDs rather than numeric codes.

Toilet

Green tank LED
The tank-symbol LED glows solid green. The toilet system… No tank LED / off
The tank-symbol LED is not lit at all. The toilet system… Red tank LED (full)
The single tank-symbol LED on the wall switch glows soli… Yellow tank LED
The tank-symbol LED glows solid yellow/amber. This is an…