1. Faulty evaporator thermostat.
2. Too little water circulated over evaporator plate.
3. Evaporator thermostat set on “Thin Ice Cubes.”
4. Evaporator thermostat bulb installed in wrong location.
1. Replace thermostat.
2. Check water pump and lines. Clean or repair as necessary.
3. Recalibrate thermostat by turning its adjusting screw clockwise to obtain desired thickness.
4. Make sure there is a shim between the thermostat feeler tube and evaporator bracket.