Applies to:

Error Codes

Display	Cause	Solution
“E-4”	Control board overheating	Turn switch to OFF position, then turn switch back to ON; if display shows “E-4”, the control board is getting too hot; make sure unit is not overheating If control board is not overheating and “E-4” persists, replace control board.
“E-6”	Faulty temperature probe	Check to see if unit is set to the correct number of drawers ex: MP-942=2 drawers (see Programming) Check probe for loose connection or probe faulty Turn switch to OFF position, then turn switch back to probe ON; if “E-6” still shows, have temperature probe checked
“E-41”	Memory scrambled	Press and release the UP and DOWN buttons to initialize the program; if “E-41” persists replace the control board Press and hold the UP and DOWN buttons and turn unit on. After SP shows on display, press SET button twice. Then press and hold the UP or DOWN button until In-SYS shows in display; if “E-41” persists, replace the control board
“E-5” “Hi”	Unit overheating; faulty relay or control board	Have relay or control board replaced If control board doesn’t cut power to relay when LED is green, then replace control board; but if control board does cut power to relay when the LED is green, but unit continues to heat, check relay