Home Forums General Discussion Technical Questions Tac 20 Stuck on Viscosity Control

I have had a problem with a tac 20 where the unit was shut down over the weekend. the oil gets cold and the motor ran until the low oil timer tripped on the restart. it took a while but I had to keep running the motor until the oil reached the proper temp. then it took off and ran. The valve kept bypassing until the oil got warm.