7-2.
ERROR CODES
DISPLAY
"E-4"
•
Control board
overheating
"E-5"
•
Oil overheating
"E-6A"
•
Temperature probe
open
"E-6B"
•
Temperature probe
shorted
"E-10"
•
Hight limit
"E-15"
•
Drain switch
"E-18-A"
•
LH level sensor open
"E-18-B"
•
RH level sensor open
"E-18-C"
•
Both sensors open
March 2014
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.
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
Turn switch to OFF position, then turn switch back to ON;
if display shows "E-6B", the temperature probe should be
checked
Let unit cool down (15-20 minutes), push up on metal reset
button under right side of the controls; if high limit does not
reset, high limit must be replaced
Make sure drain knob is completely pushed-in; if E-15
persists, have drain switch checked
Turn switch to OFF position, then turn switch back to ON;
if display still indicates a failed sensor, have the connectors
checked at the control board; have sensor checked &
replace if necessary
CORRECTION
74