►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.
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| ErNN | |||
| UPPER HEATER ZONE |
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| LOWER HEATER ZONE | |
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Some Examples: |
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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.
►To reset the holding bin controller to the factory configuration, hold down the
•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.
Holding Cabinet – Service Manual | 11 |