Holding Cabinet – Service Manual
11
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THERMOCOUPLE FAULT DETECTION (CONT”D)
If a fault is detected in any bin, the display for that bin will show “ErNN” where “NN” is a
numeric error code. This two digit error code uses the first digit for the upper heater zone.
If a short is detected, the digit will be a “1”, if an open is detected a “2” will be displayed. If
the heater zone is operating properly, a “0” will be displayed.
Some Examples:
Er01 Indicates
Upper heater zone is good. Lower heater zone TC short detected.
Er02 Indicates
Upper heater zone is good. Lower heater zone TC open detected.
Er10 Indicates
Upper heater zone TC short detected. Lower heater zone is good.
Er20 Indicates
Upper heater zone TC open detected. Lower heater zone is good.
Er22 Indicates Upper
and
Lower
heater zone TC’s detected open.
Cold Indicates
Temperature of heater zone is below set point.
Hot
Indicates
Temperature of heater zone is above set point.
Once and error is indicated for a heater zone the affected heater is shut off.
The only way to clear an error indication is by cycling the power off then on again.
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To reset the holding bin controller to the factory configuration, hold down the upper-left
“Bin” button while powering on the controller. Release the “Bin” button as soon as the
displays illuminate. This resets the following settings:
• All product names
• Upper and lower temperature for each product
• “Expiration” and “Cook More” time for each product
NOTE: For additional information concerning Menu and Product programming, please
refer to Merco Holding Cabinet Installation & Operation Manual.
ErNN
UPPER HEATER ZONE
LOWER HEATER ZONE
