I purchase this machine about 3 months ago, its a M450 Ice Cube machine, right now i just the wall, and i need help. The problem i have is the alam light is on(triangle or the forth one) , and can't produce ice or you can say harvest take too long, i need a solution. i press reset it start normally , the machine start normally and when about 10 to 15mins during the process the light come on and no ice drop also the water not cold at all. when you look from the side of the ice machine , one of the hose at the back it all ice and the top hose is not cover with ice , has anyone have this problem before or do you have a solution . please advice. my email is email@example.com many thanks henry
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Re: hello mate re mv450
Check the ice thickness sensor for mineral buildup and clean if necessary. I downloaded the service manual from a site in New Zealand. If the Ice thickness sensor is free of scale make sure you are NOT supplying the machine with soft water.
Let me know if this solves your problem. I have been servicing Scotsman Ice Machines for over 38 years in the US. I will try to assist you any way I can. This particular model is not sold in my country.
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ok, what you have not told me was the temp of the ice plate. If you have an inferred thermometer now is a good time to use it. what is the Temp of the plates or ice collection try. Ice will never collect if it is not below zero C. 32F my guess is it must be below 28F. you need some kind to thermometer.
Inside the bin there is a photoelectric sensor that senses the level of ice in the bin. This sensor can be knocked out of alignment in time which will send false signals to the controller. Re aim the sensor and make sure it is tight. This may solve the problem.
This machine has a cube size control. Which tells the machine when to go into a harvest. there is a harvest switch did you try to force it into a harvest and if you did, did it harvest. depending on ambient temperature from start of freeze cycle to harvest it should be making ice every 15 to 18 minuets and then go into a harvest. so start the ice machine and time it , run it for 18 minuets and force into a harvest. after ice drops check the ice bridge thickness. Bridge thickness should be about 3/16'' the ice dimple must not be DEEPER than 1/16". If this is good then we need to look at what is not working to harvest ice. The cube size control is a reverse - acting thermostat that controls the start of the timed freeze cycle. It must be set properly to prove the correct size cube bridge. When it is closed, an indicator light on the control board will be on. If you force it into a harvest and it harvest the ice with no problems and the ice is at the right thickness then replace the cube size control, but if dose not harvest the ice and you see the ice is at a good thickness and not to thick because if it is to thick it will freeze to every thing and will not drop. SYMPTOM. Unit freezes, but will not try to harvest. POSSIBLE CAUSE: Cube size control will not close; to check: Unplug water pump, switch unit OFF and then ON, in about 2 minutes the timed freeze light on the control board should be ON. PROBABLE FIX: If timed freeze light does not go ON, replace cube size control. SYMPTOM #2: Timed freeze light glows, but after 4 minutes unit dose not power hot gas nor purge valves Then replace control board.
1. bin full when bin is empty means that the bin control sensor is dirty or need to be replaced. But since your having problems with water over flowing also i would bet that your machine needs a good cleaning. is you water full light on or off? if off and water sump try is full then you need to pull water sensor out and clean or replace it. if water sensor light is on then you need to replace water inlet valve.
Check to make sure the condenser coil is clean, fan motor is running during freeze cycle. High Ambient temp, Ventilation, The higher the temperature entering the condenser coil the higher the head pressure. Fan motor failure, pressure switch failure. The cut out pressure varies 400, 450 or 500 PSIG. Water supply failure. not enough water running over the evaporator plate will cause high presser.
Personally I think the prices that you paid for the new TXV and dryer are VERY far out of line.Get what information you can off of the TXV power assembly and valve body along with the manufacturer of the valve and I will see what I can find out for you. If it is the power assembly that is rusted out and leaking there are kits for replacement parts on most valves.