Red light on macerator control (Dometic)

[Neal]

2017 Newmar Ventana. At times I've had the yellow light come on which is typically resolved by some tank cleaning, cascade, etc. Coach has been in storage for longer than I care to think about or share but yesterday I brought it home and prepping for departure tomorrow for a few weeks out. Front tank display shows 1/3rd on black tank level, gravity toilet flushes with no issues or tank sensor blocks. I put some cleaner and water in that will slosh around for tomorrow's travel day and we'll see how it looks when I arrive. Maybe a 12V cycle is in order for first triage. I'm not sitting level right now as it's on an uphill road but it's odd that the tank sensor is reporting 1/3rd yet the macerator control is showing a red light.

I welcome any suggestions for my usual trip start triage fun.

 

[MemoriesByTheMile]

Have you tried the simple turn it off/on?
This helped us once.

 

[DennisT]

Should be a control board in one of your bays that feeds the yellow and red light. If you find the board you can try unplugging the wire to the 100% light - if the red light goes off then it is from the level sensor.

Not sure what year they started but there is also a float in ours that gives the red light regardless of the level indicated (fail safe just in case). That will not be turned off by unplugging the wire from the control board.

Of course the above assumes you have the TMSC 100 control board.

I can post a pic of our board if you need to see what it looks like.