Ice Chute Switch; Low Water Float Switch - Welbilt Multiplex FreshBlender Service Manual

Component Check Procedures

ICE CHUTE SWITCH

Function
When the storage bin is full, the ice contacts the paddle
and holds the switch open. After the switch is open for 5
continuous seconds, the ice machine shuts off and a15
minute delay period starts. The ice machine remains off
until enough ice is removed from the storage bin to allow
the switch to close. The ice machine will then restart,
provided the 15-minute delay has expired.
Specifications
Normally closed, 5 amps 125/250 VOLTS
Symptoms
Ice Chute Switch Fails Open
• The ice machine will not start an ice making cycle and
the control board bin switch light remains on.
Bin Switch Fails Closed
• The ice machine continues to run after ice contacts the
ice damper and the control board light remains off.
DIAGNOSTICS
1. Open and close the ice chute switch repeatedly while
observing the control board lights.
A. Ice chute switch cycles open/closed and control
board light energizes/de-energizes - Ice chute
switch is operating normally
B. Ice chute switch remains closed and the control
board light remains off. Disconnect the ice chute
switch wire from the control board (Bin Level
connector). If the light energizes replace the ice
chute switch; if the light remains off replace the
control board.
C. Ice chute switch remains open and control board
light remains on. Disconnect the ice chute switch
wire from the control board (Bin Level connector)
and jumper control board terminals. If the light de-
energizes replace the ice chute switch; if the light
remains on replace the control board.
70

LOW WATER FLOAT SWITCH

Function
Stops the ice machine when the water level drops below an
acceptable level.
Specifications
The low water float switch is a magnetically operated reed
switch. The magnet is attached to the float.
• When water contacts and raises the float, the switch is
electrically closed and the LOW LVL FLT LED will be off.
• When the water level drops the switch is electrically
open and the LOW LVL FLT LED will be on.
• When the water level drops below a safe level in the
freeze cycle the SAFETY 2 LED is energized and the ice
machine stops.
Symptoms
Float Switch Fails Open
• The ice machine will not start an ice making cycle.
Float Switch Fails Closed
• The ice machine continues to run after a loss of water.
Diagnostics
1. Verify float is in place and moves freely.
2. Open and close the float switch repeatedly while
observing the control board lights.
A. Float switch cycles open/closed and control board
light energizes/de-energizes - Float switch is
operating normally
B. Float switch remains closed and control board light
remains on - Go to step 3
C. Float switch remains open and control board light
remains off - Go to step 4
3. Disconnect float switch wire from control board and
observe the control board light.
A. Control board LOW LVL FLT LED is off - Replace
switch.
B. Control board LOW LVL FLT LED remains On -
Proceed to step 4.
4. Disconnect bin switch wire from control board ( Bin
Level connector) and jumper control board bin switch
pins and observe the control board light.
A. The control board light energizes - Replace bin
switch
B. The control board light remains off - Verify jumper
is making proper pin contact - Replace control
board
Section 7
Part Number REV00 04/08/2020