Sws ice cube machine ...model ZB 15P Although there is sufficient water in the machine the light flashes indicating there is no water and therefore no ice is made.

cubes set too large
Adjusting the Ice Cube Size: 1. Press and hold the "Adjust" button for approximately 3 seconds until the Green Indicator starts blinking, release the button. The unit is now in Ice Adjustment mode. 2a. Press the "CLEAN" button to decrease ice cube size. The Red Indicator will flash as you lower in size and will blink when you have reached the smallest possible setting. 2b. Press the "MODE" button to increase ice cube size. The Yellow Indicator will flash as you increase the size and will blink when you reached the largest possible setting. After 10 seconds without any operation, the unit will return to the previous mode. NOTE: • During the ice adjustment mode, if the "ICE FULL", "ICE MAKING" and "ICE HARVEST" LED's all blink simultaneously, this means setting is at the regular (middle) size. • When the machine is in the cleaning stage or ice full stage, the ice size cannot be adjusted.

The blinking light on a Scotsman Ice Maker CME656A-32D typically indicates that there is an error code. A blink pattern of two blinks typically indicates a low water pressure or a problem with the water supply. Make sure that the water supply to the ice maker is turned on and that the water pressure is sufficient. You can check the water pressure by using a gauge on the incoming water line. The pressure should be between 20 and 120 psi. If the water pressure is adequate, you may have a problem with the water inlet valve, which is responsible for letting water into the ice maker. If that is the case, you may need to replace the valve.

Clean or replace water level probe.

Appliancesupplies.smarter.com

I have the same problem

This light is a harvest limit light. This light's primary function is to be on as water contacts the ice thickness probe during the freeze cycle, and remain on throughout the entire harvest cycle. The light will flicker as water splashes on the probe. The lights secondary function is to continuously flash when the ice machine is shut off on a safety limit, and to indicate which safety limit shut off the ice machine. Start up of machine after turned off. !. Before the ice machine starts, The water pump and water dump solenoid are energized for 45 seconds to purge old water from the water trough. This ensures that the ice making cycle starts with fresh water. The water fill valve energizes after 45 second water purge, and remains on until the water level probe is satisfied. 2. to pre-chill the evaporator, there is no water for the first 30 seconds of the freeze cycle. 3. The water pump starts after 30 seconds pre-chill. An even flow of water is directed across the evaporator and into each cube cell.

What is the model number?

Check the water pump, I had the same problem, the water pump was bad but unable to find replacement parts at this point. The pump is a ZB-1200 made by Zhongboa Motor Factory,

Good Luck

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.
Winterizing
1. Clean the machine as explained on the next
page.
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
water valve.
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.

CUBE ADJUSTMENTS
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
cover.
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
turn counterclockwise.
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
cycle.


Diagnostic Codes
Code Description
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

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Check or change the water filter, leading into the machine.
If that is not the problem ,disconnect the water lone from the machine and see if their is sufficient flow comming through the line.