R21EC Engine lights and alarm

[rustednail]

Hi all,

Last night, I did an oil change on my tug. Hooked up the water hose and started the engine. When I first turned the key I heard the audio alarm and, I think I had a few lights on the panel but was not watching too closely. I started the engine and she started on the first crank. I allowed the engine to fast idle for a little while to warm up the oil. I shut down the engine with the stop button. I didn't notice any alarms, but I did turn the key off as soon as the engine stopped. I proceeded with my oil and filter change and all was going good. After the crank case was serviced with oil and the new filter was installed. I turned the water hose back on and cranked the engine. I heard no alarms and had no lights on the panel except for the battery light. I shut down the engine with stop button and no alarms and only the battery light illuminates. I don't think this is normal.

I was almost out of daylight and had a few things left on my "honey do" list so I didn't get a chance to look around. Anyone have any ideas on what I should look at first? Could a fuse have blown? poor connections?

Thanks in advance for ya'lls assistance.

 

[rustednail]

I found the trouble this evening. When I changed the filter, I must have bumped the oil pressure sensor. If sensor wire is disconnected, no alarms, no low oil pressure indication.

 

[SteveB]

Well, you gotta love the simple solution! Thanks for sharing your experience. We are still under 25 engine hours on our R21EC, but now I know to keep an eye on sneaky sensor wires when we go to do our first oil change.

-Steve