Applies to:

Error Codes

Display	Cause	Solution
“E-4”	Control board overheating	Turn POWER switch to OFF then back ON; if display still shows “E-4”, the unit is overheating or louvers are clogged
“E-6”	Faulty temperature temperature probe	Check probe for loose connection or probe faulty
“E-41”	Memory scrambled	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
“Hi”	Unit overheating; faulty relay or control board	Have relay or control board replaced