Resolved 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.

 

[Neal]

2017 Ventana doesn't have KiB if that's related to the TMSC. It's odd that this light is not related to the 3 sensor system on the tanks which I thought it was. But I'm not level so I'll hold off until I arrive at the CG tomorrow to dig into this if needed. Tanks have cleaner in them to slosh during the drive and we'll see if it wants to be nice on arrival. Thankfully the gravity tank works which I know is connected to the full tank indicator.

 

[Neal]

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

I cycled 12V and that did show powered off, then turned 12V back on - no luck.

 

[DennisT]

2017 Ventana doesn't have KiB if that's related to the TMSC. It's odd that this light is not related to the 3 sensor system on the tanks which I thought it was. But I'm not level so I'll hold off until I arrive at the CG tomorrow to dig into this if needed. Tanks have cleaner in them to slosh during the drive and we'll see if it wants to be nice on arrival. Thankfully the gravity tank works which I know is connected to the full tank indicator.

Yeah it is odd since they are normally on the macerator setup.

Yes, the board is tied to the KIB system.

 

[Neal]

Arrived at the CG and the red light was out. Had the amber light which is expected as I had water in the black tank to clean it with cascade so it was over 2/3rd full. Maybe there is a "level" sensor somewhere in the system that triggered the red light since I was parked uphill. Interesting. Didn't know that.

All is good, brutal first day as they always are with cleaning and setup but finally settled in and enjoying some football. Great to back in the coach again. My peaceful place.

 

[DennisT]

Arrived at the CG and the red light was out. Had the amber light which is expected as I had water in the black tank to clean it with cascade so it was over 2/3rd full. Maybe there is a "level" sensor somewhere in the system that triggered the red light since I was parked uphill. Interesting. Didn't know that.

All is good, brutal first day as they always are with cleaning and setup but finally settled in and enjoying some football. Great to back in the coach again. My peaceful place.

Could be they started with the float switch when the black tank is “full” even before the whole kib setup and different level indicators.

Good to hear all good now.