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Model 291
1-4. ERROR CODE TABLE In the event of a control system failure, the digital
display shows an error message. These messages
are coded: “E4”, “E5”, “E6”, “E10”, “E15”, “E41”,
“E46”, “E47”, “E48”, “E70B” and “E92”. An alarm
sounds when an error code is displayed, and to silence
this alarm, press any button.
DISPLAY CAUSE PANEL BOARD CORRECTION
“E-4” Control board Turn switch to OFF position, then turn switch back ON;
overheating if display shows “E-4”, the control board is getting too hot;
check the louvers on each side of the unit for obstructions;
check cooling fan, if present
“E-5” Shortening Turn switch to OFF position, then turn switch back to ON;
overheating if display shows “E-5”, the heating circuits and temperature
probe should be checked
“E-6 A” Temperature Turn switch to OFF position, then turn switch back to ON;
probe open if display shows “E-6”, have the temperature probe checked
“E-6 B” Temperature Turn switch to OFF position, then turn switch back to ON;
probe shorted if display shows “E-6” have the temperature probe checked
“E-10” High limit Reset the high limit by manually pushing up on the reset
button; if high limit does not reset, high limit must be replaced
“E-15” Drain switch Close drain, using the drain valve handle; if display still
failure shows “E-15”, have the drain microswitch checked
1-9 904