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4-2. ERROR CODES In the event of a control system failure, the digital display shows an error
message. The message codes are shown in the DISPLAY column below. A constant tone is heard when
an error code is displayed, and to silence this tone, press any button.
DISPLAY
"E-4"
Control board
overheating
"E-5"
Shortening
overheating
"E-6A"
Temperature
probe open
"E-6B"
Temperature
probe shorted
"E-10"
High limit
"E-15"
Drain switch
failure
"E-41", "E-46"
Programming
failure
"E-31"
Fan switch jumper
wire missing or
disconnected
"E-54"
Faulty PC board
component
"E-70"
Faulty power
switch, or switch
wiring; faulty
I/O board
CAUSE
Turn switch to OFF position, then turn switch back to ON;
if display shows "E-4", the control board is getting too hot;
check the louvers on each side of the unit for obstructions
Turn switch to OFF position, then turn switch back to ON;
if display shows "E-5", the heating circuits and temperature
probe should be checked
Turn switch to OFF position, then turn switch back to ON;
if display shows "E-6A", the temperature probe should be
checked; to replace, refer to Technical Manual
Turn switch to OFF position, then turn switch back to ON;
if display shows "E-6B", the temperature probe should be
checked; to replace, refer to Technical Manual
Reset the high limit by manually pushing up on the red
reset button; if high limit does not reset, high limit must be
replaced; refer to Technical Manual
Close drain, using the drain valve handle. If display still
shows "E-15", check the drain microswitch; refer to
Technical Manual
Turn switch to OFF, then back to ON; if display shows any
of the error codes, try to reinitialize the control (Special
Program Mode section); if error code persists, replace the
control board; refer to Technical Manual
Turn switch to OFF, then back to ON; if "E-31" persists,
have jumper wires J2 & J4 on the 12-pin connectors on
the PC board; if jumpers are OK, have PC board replaced
Turn switch to OFF, then back to ON; if "E-54" persists,
have PC board replaced
Have POWER switch checked, along with its wiring. Have
Input/Output board replaced if necessary
PANEL BOARD CORRECTION
OFE14X
57
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