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4-1. TROUBLESHOOTING GUIDE
Problem
Product not
holding
temperature
With power switch
on, unit is
completely
inoperative
(NO POWER)
Shelf won't heat
Light not lit
4-2. ERROR CODES
DISPLAY
"E04"
Control board
overheating
"E41"
Memory scrambled
503
SECTION 4. TROUBLESHOOTING
Cause
• Heat value of shelf not high enough
• Product not hot when placed in
cabinet
• Open Circuit
• Shelf not plugged into receptacle
properly
• Shelf not plugged into receptacle
properly
CAUSE
• Set higher heat value in controls
• Place prepackaged hot food in
• Check to see that unit is plugged in.
• Check breaker or fuse at supply
• Check control panel fuses behind
• Check that the shelf plug is firmly
• Check that the shelf plug is firmly
PANEL BOARD CORRECTION
Turn unit off and back on; if display shows "E04",
the control board is getting too hot; make sure unit is not
overheating
Turn unit off and back on; if "E41" still shows on display,
have PC board intitialized; if "E41" persists replace the
control board
Model HEC-103/104/123/124
Correction
cabinet
box
bottom, front panel
pushed into receptacle, in the
interior of the cabinet
pushed into receptacle, in the
interior of the unit
4-1
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