Main Control - U-Line UANB115 User Manual & Service Manual

USER GUIDE

MAIN CONTROL

The main control board is very robust and is rarely the
cause of system issues. It is important to fully diagnose
the board for any suspected failures before attempting
to remove the board for replacement or service. Follow
the guidelines below to fully test and diagnose the main
control.
Power Fault
If the unit does not (or seems to not) power on, follow the
flow chart below to help diagnose the issue. Before begin-
ning it is important to first verify the unit is not simply set
to sabbath mode.
TROUBLESHOOTING GUIDE
Concern Potential Causes
No Display or Unit may be in Sabbath mode
Interior Lights
No Interior Light Light may be set to OFF Check LED
strip for power Defective door switch
Condensation on Is unit exposed to high humidity or high
exterior of unit ambient temps?
No Ice Production Is the unit getting water?
Low Ice Dirty evaporator, dirty condenser, faulty
Production bin thermistor
Alert light flashing Check error log
Ice is too dense/ Dirty evaporator, water starvation
not dense enough
Standing Water in Drain hose is restricted, debris in bin
Ice Bin drain hole, failed drain pump failed
dump valve
Troubleshooting Extended
Check Voltage
At Wall Outlet
Voltage
Verify Voltage At
Main Control
Voltage Input
Voltage
Check Fuse F1
For Continuity
Continuity
Connect Test Display
Cycle Power And Check
For Operation
Not Operating
Is the Reed
Switch Operating
Properly?
No
Replace
Reed Switch
Action
• Tap to turn off Sabbath mode, test the door switch
circuit
• Unplug unit, wait 5 seconds, plug back in. If main board
does not beep, check for 120V at black and white cables
on power cord.
Use component testing in service mode and test light circuit,
manually test door switch
Moisture will dissipate as ambient temp. and humidity levels
fall. Keep exterior of unit well polished to protect surface.
Go to component testing and turn on fill valve and verify
120V at the valve.
Clean the evaporator using U-Line cleaner, clean the
condenser coil if needed, check bin thermistor reading in
service mode.
View errors in service mode, review error and take corrective
action to resolve
Clean the evaporator if needed, check water supply, test
harvest mode, adjust ice thickness
Make sure drain hose run is as straight as possible. Remove
any kinks or tight bends, pour 1/2 gallon of water into bin to
test drain.
49
u-line.com
Alert Customer
No Voltage
Of Power Failure
Replace
No Voltage
Power Cord
Replace
No Continuity
Fuse
Inspect
Operating
Customer UI
and Data Cable
Replace Main
Yes
Board