USER GUIDE
Troubleshooting - Extended 1
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
Troubleshooting - Extended
SPECIFIC ERRORS AND ISSUES
The technically advanced diagnostic capabilities of the
electronic controls utilized on the 3000 series units allows
for easy and thorough trouble shooting.
Navigation of the control is the key and is explained in the
CONTROL OPERATION section of the manual, along with
control button layout, control function descriptions, a
service mode menu and service menu selection
explanations.
Verification of temperature and thermistor performance
can be identified by directly viewing actual temperature
readings in the service mode.
Component failure issues can be identified through service
mode menu selection, “Relay Toggle” Individual
components can be switched on and off to check for both
proper function of a specific component and also delivery
of supply voltage to the components through the relays
and DC outputs located on the relay/power board.
Included in this section is some diagnostic tips and as
always, if additional help is required please contact the U-
Line Corp, “Customer Care Facility” at
+1.414.354.0300
for
assistance.
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
beginning it is important to first verify the unit is not
simply set to sabbath mode.
Check Voltage
At Wall Outlet
Verify Voltage
At Main Control
Voltage Input
Check Fuse F1
For Continuity
Open Door.
Is the UI Now
Functional?
Replace Main
Board
Replace Reed
Switch.
Replace
Fuse
Replace
Power Cord
Alert Customer
Of Power Failure
Is the Reed
Switch Operating
Properly?
Is the door open? The
Display will not activate
while the door is closed
Inspect Customer UI
and Data Cable
Connect Test Display
To J5.
Cycle Power And
Check For Operation
No Voltage
No Voltage
Voltage
Continuity
Operating
Not Operating
No Continuity
No
No
No
Yes
Yes
Yes
Voltage
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