SOURCE: Hoshizaki KM-450MAB Ice Machine
maybe not. it could be that the heating cycle is taking a lot of time to remove the ice from the evaporator that is why the electronics is shutting off the compressor as a protection. check the heating cycle if it is working fine. check the evaporator for dirt that would hold the ice slab from falling down quickly. check the level of the unit. it may have move and now its out of level. the unit must be leveled with the ground.
SOURCE: Ice maker won't shut off when full
check the Shutoff Arm:
An arm extends away from the ice maker over the ice cube bin. During each ice making cycle, the arm rises up and then drops back down after the new ice is dumped into the ice cube bin. As ice accumulates in the bin it prevents the arm from dropping back down. When the arm is high enough, the ice maker shuts off and no more ice is made until the ice level in the bin drops.
The ice maker can also be turned off manually by lifting the arm all the way up into a locked position (shown below
The arm is supported at one or both ends. One end extends into the back of the front support (see photo above). If it is not securely in place, it could cause the ice maker to malfunction. Confirm that the arm is securely in place.
For proper operation, confirm that arm is in the lowered position and that nothing is blocking it from normal movement.
To test the shutoff function, lift the arm up into the manual shutoff position. Recheck the unit later to confirm that no ice is being made.
If unit continues making ice even when the shutoff arm is in the up (off) position, refer to the diagnostic table or for a modular ice maker, replace the control module.
check the Shutoff Switch:
Before testing the shutoff switch, unplug the refrigerator to avoid an electrical shock hazard.
There are two types of ice makers, those in which all of the parts can be individually replaced and those in which some of the parts are clustered together into a control module. To determine which model you have remove the outer face plate. If there is knob, pull it off first, then pry off the face plate with a small screwdriver.
Modular units have holes in the module's face plate for test probes. If you see several holes, each marked with a letter, it is a modular unit. Component units (like the one shown below) usually have exposed gears and don't have holes for test probes.
Modular units do not use a separate shutoff switch. Instead follow this link to view instructions for checking the shut off arm.
SOURCE: ice machine keeps going to
o[en bin and look at your sensors, more then likely they have a scaley build up. the sensors are located below the ice maker and before the bin. It looks like a button of sorts one on each side, you can use a tooth brush to clean them. This should fix the problem
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