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This section is provided for the assistance of
qualified and trained service technicians only
and is not intended for use by untrained or
unauthorized service personnel. Failure to
observe this precaution may void the warranty.
NOTE: If the warmer is not operating properly, do the following
before calling an authorized service agent:
•
Verify that the power to the warmer is on.
•
Ensure the female end of plug is securely seated in
the warmer and that the male end of the plug is in an
appropriate, functioning outlet.
•
Examine the high limit manual reset button. If the
reset button is tripped, reset the button using the
instructions How to manually reset the warmer.
•
If a temperature calibration adjustment is required,
call service for proper instructions.
• All error codes must be cleared by pressing the circuit
breaker on the back of the warmer to the o (O)
position and allowing the warmer to cool.
Troubleshooting Guide
Code Description
door The door has been
open for more than 3
minutes
E-10 The compartment air
sensor is shorted
E-11 The compartment air
sensor is open
E-30 Under Temperature
(Blanket warmers
only)
E-31 Over Temperature
E-50 Temperature
Action Required
• Close the door.
• Verify that the door switch is operating. Replace the door switch if necessary.
• Detach the sensor from the terminal block. Measure the resistance of the sensor with
an ohmmeter. Test the sensor at 32°F (0°C) using a container of ice water. The ohm
reading should be 100. If the ohm reading is +/- 10, replace the sensor.
• Inspect wires for integrity. Ensure proper and secure connections are made at the
controller and the terminal block.
• If the error continues call service.
• Detach the sensor from the terminal block. Measure the resistance of the sensor with
an ohmmeter. Test the sensor at 32°F (0°C) using a container of ice water. The ohm
reading should be 100. If the ohm reading is +/- 10, replace the sensor.
• Inspect wires for integrity. Ensure proper and secure connections are made at the
controller and the terminal block.
• If the error continues call service.
This error occurs when the blanket chamber temperature is lower than the set
temperature for 90 minutes or longer.
• Ensure that the door is closed.
• If the compartment is overloaded, redistribute the inventory. Do not exceed the
height of the insert.
• If the compartment is overloaded, redistribute the inventory. Do not exceed the
height of the insert.
• Measure the resistance of the sensor with an ohmmeter. Test the sensor at 32°F (0°C)
using a container of ice water. The ohm reading should be 100. If the ohm reading is
+/- 10, replace the sensor.
• Inspect wires for integrity. Ensure proper and secure connections are made at the
Serial number is required for all inquiries.
controller and the terminal block.
Part numbers and drawings are subject to change without notice.
• Replace the defective relay.
MN-28667 • Rev 4 • 12/16 • EC Series Blanket Warmer
• If the error continues, call service.
• Call service.
Notice: Do not attempt to repair or service the warmer
beyond this point. Contact the manufacturer for the
nearest authorized service agent. Repairs made by
any other service agent without prior authorization
by the manufacturer will void the warranty.
How to Manually Reset
the Warmer:
1. Locate the manual reset
button at the rear of the
warmer. (The location may
vary from the diagram.)
2. Use a pen, screwdriver or other long, thin implement
to fi rmly push the reset button. The button clicks when
it resets.
If the reset button trips again while the appliance is
running, contact a qualifi ed service technician.
Troubleshooting
Manual reset button
breaker
Circuit
15
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