I AM WORKING ON A BCM95 THAT WILL NOT CYCLE THROUGH THE HARVEST CYCLE. I JUST REPLACED THE CONDENSER FAN. FAN WORKS GOOD, COMPRESSOR RUNS, UNIT COOLS DOWN WELL. THE UNIT SEEMS TO BE STUCK IN THE FREEZING CYCLE. AFTER 2 HOURS OF RUNNING, STILL NO MOVEMENT OF THE CAM GEAR OR ICE BAR / PADDLE. ALSO, NO WATER IN THE TRAY. MANUALLY DEPRESSED THE HOLD SWITCH TO CYCLE UNIT. CAN HEAR WATER SOLENOID BUZZ, BUT NO WATER. AM SURE I NEED A NEW SOLENOID, BUT AM CONFUSED WHY THE UNIT DID NOT CYCLE TO ACTIVATE THE WATER SOLENOID IN THE FIRST PLACE. ANY ASSISTANCE WOULD BE GREATLY APPRECIATED.
These units take a full cycle to get to the fill cycle, so you won't get ice on the first cyle unless you manually fill the tray when you first power it on. You may have some air in the water line and need to cycle a few times to fully bleed the air out. Also check the water inlet for debris in the filter screen using a small brass brush, then bleed out air -with water on- while tightening back hose connection avoiding need to bleed while cycling. Lyle
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CM3 Operational Sequence.
From Off, push and release the freeze button.
1. If sump is full,water pump starts.If sump is not full,water valve opens to fill it.
2. Compressor starts when sump is full.Air cooled fan motor starts too.
3. water pump stops early in freeze cycle for 30 seconds.
4. Sump refills after pump starts.
5. In low ambient condition,fan motor may begin to cycle on and off.
6. Freeze continues until water level in sump drops to preset point. Exceptions: SCE275 must fill sump two more times.
7. Fan may shut off before the end of freeze.
8. Harvest begins. Hot gas valve opens,pump stops.
9. Pump restarts, inlet water valve opens to fill and overflow the reservoir.
10. Harvest continues for preset first cycle harvest time.
11. If bin is not full, cycle repeats ( compressor stays on). If bin is full, unit shuts off at the end of harvest.
OK with that out of the way unless you unplugged any wires cleaning the machine should not have caused any problems. First cut off water and pull water supply line from water inlet valve look in the end of valve there is a screen in there it could be stopped up. If the valve screen is not stopped up then put supply water line back on and turn water back on. power the CM3 controller off. push freeze button. now with a voltage meter check at the water inlet valve to make sure you are getting power to the valve.If you are then either valve is stopped up or valve is bad. If you are not getting power to valve then replace the CM3 controller now make sure the bin full light is not on because if it is this will not let controller go back to a freeze cycle.
First check to make sure condenser fan is running during freeze cycle. Now check to make sure condenser coil is clean. Her is all the specks on the machine.
1. Ice production ( 500 at 70/50
2. BTUs per hour ( 7000)
3. Maximum times in Minutes. ( 50 freeze, 14 harvest.
4. Refrigerant charge ( R-404A ) ( A-D series: AC 32oz, WC 20 oz. E series AC 23 oz, WC 14 oz, F series AC 23 oz, WC 13 oz
5. Suction pressure ( PSIG ) 35-37 - end of freeze, 120-125-Peak in harvest.
6. Discharge pressure ( PSIG ) 240-260- 5 min in freeze.
165-175- minimum in harvest.
7. Metering device.( TXV plus distributor, E series and higher have two TXVs. superheat 3 to 15 deg F.
8. Average comp.amps. 10-11 during freeze, 11-12 during harvest.
9. Batch Weight. 6.5-7 lb
10. cycle time, 23 minutes @ 90/70. 19 minutes @ 70/50
The condenser fan should cycle during pressure changes and is normal for your model. If for some reason harvest is being affected by abnormal cycling of your QY0604A would indicate a mechanical or electrical problem and would require an experienced technican to make adjustments. Here is a=> Monitowoc QY0604A Operators Manual please scroll to page 40 where many of these functions are explained, I will be here should you have other questions or problems you may need help with, Thanks, Sea Breeze
First off make sure the water in door still works. If it does not work suspect the door / light switch.
Next make sure the freezer temp is below 16 Deg F. The ice maker has a thermostat that starts the ice harvest / fill cycle and if the freezer is warming up because of automatic defrosting problems (Ice build up on the evaporator coils) the ice maker will never cycle. If you note an ice build up in the back of the freezer compartment or poor air flow from the evaporator fan you have an automaticdefrosting problem. If the fan is not running at full speed the bearings or windings on the evaporator fan are failing and there is not enough air flow to get the freezer to @ or Below 16 F.
Check to make sure the evaporator fan in the freezer and the condenser fan in the rear bottom of the unit are running un-obstructed. (clean as necessary.... but if the front of the cabinet is hot to the touch then the condenser coils my be clogged with lint or... the condenser fan is not running full speed.
The ice maker may be cycling but it may not be filling with water. If it is cycling but your not getting any water.... at all the prime suspect is the solenoid on the inlet water valve. The water valve is not repairable.
Make sure that the rubber fill tube on the back of ice maker is not blocked with ice... squeeze the end of the tube. If it is frozen with ice... the inlet water valve is bypassing water off cycle and causing the tube to freeze up. The only remedy for this is to replace the inlet water valve.
Water leak and noise are due to wrong temp setting or malfunction of defrost cycking.Keep temp setting between 3 and 5 degree centigrade. Due to over frosting, the freezer fan fan hits over the ice and working to cool fridge compartment.And also check defrost timer, and heaterworking properly to defrost in time. And if your ice maker is making sound, due to:
You will hear a buzzing sound when the water valve opens to fill the water reservoir for each cycle.
Rattling noises may come from the flow of the refrigerant or water line. Items stored on top of the ice maker can also make noises.
The high-efficiency compressor may make a pulsating or high-pitched sound.
Water running over the evaporator plate may make a splashing sound.
Water running from the evaporator plate to the water reservoir may make a splashing sound.
As each cycle ends, you may hear a gurgling sound due to the refrigerant flowing in your ice maker.
You may hear air being forced over the condenser by the condenser fan.
During the harvest cycle, you may hear a "thud" when the ice sheet slides from the evaporator onto the cutter grid.
When you first start the ice maker, you may hear water running continuously. The ice maker is programmed to run a rinse cycle before it begins to make ice.
DO THE BASICS:
Change the water filter
Add ice machine cleaner and go by the directions.
What should be kept clean?
There are 5 things to keep clean:
1. The outside cabinet & door.
2. The ice storage bin.
3. The condenser.
4. The ice making system.
5. The ice scoop.
The ice storage bin should be sanitized
occasionally. It is usually convenient to sanitize the
bin after the ice making system has been cleaned,
and the storage bin is empty.
A sanitizing solution can be made of 1 ounce of
household bleach and two gallons of hot (950F. -
1150F.) water. Use a clean cloth and wipe the
interior of the ice storage bin with the sanitizing
solution, pour some of the solution down the drain.
Allow to air dry.
How to clean the condenser.
The condenser is like the radiator on a car, it has
fins and tubes that can become clogged. To clean:
1. Remove the kickplate.
2. Locate the condenser surface.
3. Vacuum the surface, removing all dust and lint.
Caution: Do not dent the fins.
4. Replace the kickplate.
1. Clean the machine as explained on the next
2. Turn off the water supply.
3. Drain the water reservoir. See page 24, Spray
Pump Repair and follow the instructions to remove
the pump hose (step 2, bottom hose only).
4. Disconnect the incoming water line at the inlet
5Remove control box cover and turn the timer
into the harvest cycle.
6. With the machine operating, blow air through
the inlet water valve; a tire pump could do the job.
7. Drain pump models should have about 1¤2 gallon
of RV antifreeze (propylene glycol) poured into the
ice storage bin drain.
Note: Automotive antifreeze must NOT be used.
8. Replace control box cover. Switch off and
unplug the machine.
There are three items that may be adjusted: Cube
Size, Harvest Time, and Bin Level. Note: Cube
Size and Harvest Time adjustments should only be
done by a qualified service person.
Cube size control.
The cube size control should only be adjusted to
bring the cubes to the correct shape, the overall
size cannot be adjusted. Try to adjust the cube
size control when the ice machine is in the harvest
cycle, or in the first 10 minutes of the freeze cycle.
1. Open the door and remove the control box
2. Locate the cube size adjustment screw, and to
make fuller cubes, turn the screw clockwise about
1/4 turn. This will make the freezing cycle longer.
3. To shorten the freezing cycle and make cubes
that are not as full, turn the adjustment screw 1/4
4. After the next freezing cycle, the cubes should
have responded to the adjustment, if another
adjustment is required, do it early in the freeze
F - - - - - - - Freeze Cycle
F flashes- - - - Freeze Cycle is Pending
H - - - - - - - Harvest Cycle
H flashes- - - - Manual Harvest
b - - - - - - - Bin is Full
C - - - - - - - Clean Cycle
L - - - - - - - Board Locked
d - - - - - - - Test Mode
O - - - - - - - Off
E - - - - - - - Self Test Failed
1 flashes- - - - Max Freeze - Retrying
1 - - - - - - - Max Freeze Time Shut Down
2 flashes- - - - Max Harvest - Retrying
2 - - - - - - - Max Harvest Time Shut Down
3 - - - - - - - Slow Water Fill
4 - - - - - - - High Discharge Temp
5 - - - - - - - Sump Temp Sensor Failure
7 - - - - - - - Discharge Temp Sensor Failure
8 flashes - - - Short Freeze - Retrying
8 - - - - - - - Short Freeze - Thin ice
All 4 Upper Lights Flashing - Unit Remotely Locked Out
Sounds like possibly a bad relay in the controls.The condenser fan is supposed to turn off during harvest. If the harvest is incomplete, and I do not know if your model has an ice curtain or not, I will assume it does and the curtain switch is not operating properly. No model, can't be more specific.
few things to check... condenser coil clean. dirty condenser fluctuate temp. clean condenser. evap fan motor work? open the fridge. press the switch. heard the fan? feel the frame around the fridge an freezer is hot? or cold? cold ok. hot dirty condenser coils OR condenser fan motor. or seal system problem. call a tech>.. good luck... LEAVE YOU COMMENT IF IT WAS GOOD FOR YOU... thanks