cat 450E backhoe action light flashing......

The red ! light started flashing on my backhoe. I used it for several weeks daily and then didn't use it for about a week, after about 5 min of warm up the light started flashing, no beeper just the light, I shut it down and cycled the key switch three times and the glow plug light flashed several times, then the oil light flashed and the glow plug light flashed 9 times and stopped the unit has low hours less than 1200 and oil level was full, changed the oil and filter and...

cat 450E backhoe action light flashing......

cat 450E backhoe action light flashing......