MAN mmds-clc 6.3 Monitoring System fault reset

I have this issue with common rails on a yacht I've managed long term. It seems to only occur on the port engine and once every couple of years. It is either weak engine batteries, or 1 of the sensors going bad, it sends 4 alarms.....it's usually the coolant pressure sender near the freshwater pump.

Don't need to reset it, when the issue is fixed the alarms go away, sometimes shutting the battery switch to that engine off for 10 minutes fixes it.

I have the same CLC6.3. Hit reset and once your engine has been turned off and restarted you should not see the alarm(s) anymore. If you do its probably another issue like the sensor wires loose, bad sensors although not likely all 4 would go at same time.

After hurricane Irma both my displays had water in them. How, I have no idea as they were covered with tape. I removed them and just had them rebuilt. New they are $6500 a piece. One is having the fault light flash & beep all the time. Have been trying to track down the cause even swapping the two mmds boxes in engine room and connections on back of displays.

Hello, having similar issue with my port monitor. The port monitor has no readings but does light up so there is power just no readings. I took the starboard wire and connected it to the port monitor and the monitor worked. So i figured it was a bad cable. I changed the cable and still no reading. The fault light is blinking. Is there a reset or any other suggestion would be appreciated. Thank you

There is an alarm monitoring circuit board in the large black MAN box that is in the engine room that is what sends the signal to the display. Chances are that if your display is working on the other side and you changed the cable, that the board itself either popped out a little (similar to a computer monitor card for a computer) or is bad. You could try pulling it out and reseating it.

I don't know with engine series you have onboard but if you have commun rail you need to inspect the water sensor under the big fuel filter the wire may be twisted and short circuit

Hugues

I m getting the EDC fault as well as all of the others and it won’t let me start my starboard engine. I had some water in my fuel that was polished yesterday and started fine after. This morning I went to start it and it won’t even turn over and ideas

2007 1350 mans

Try turning the battery switches to the engines off for 10 minutes and then turning them on. Short of that fixing it, you're going to have to call a dealer out with a laptop.

Thank you

I just spoke to a couple mechanics and they basically said it’s the Engine control computer is there anywhere stateside to possibly get one as it is my understanding it takes two weeks to come from Germany

Check Marine Diesel Specialists in Fort Lauderdale or Scott Marine Power. MDS stocks a lot of MAN stuff.

Does anyone know if the displays can be reprogrammed? We bought our boat in Italy and we would like to change all references of liters to gallons. Also would like to calibrate water tank reading (Its empty at 20%).
Does anyone have a manual?

The water tank reading has to do with the sender on the water tank itself. It may have 2 tiny Phillips screws to adjust full and empty.

You may be able to change the man displays on the displays, if not any dealer should be able to with the laptop.

Thanks! I found the litres to gallons setting. I will look for the tank adjustment screws...