"THE only alarm that i am awar
"THE only alarm that i am aware of is the over heating alarm. how long has it been since you changed the impeller on the water pump? it could be time to replace it. more than likely it is the T-stat. i am familiar with the 50 hp force motors and on those it is at the top of the motor, you will see a water line going into it. it may be stuck or have some crud in it so it can't open all the way. pull it out and look at it and see if it looks clean, take it in the house and put it in a pan of water and get it hot, if it doesn't open then replace it, if it does open check the impeller in the water pump, flush the cooling system out as best you can, sometime you can get crud in that too. check back and let us know if that was it or not, okay."