Applies to:
Error Codes
In the event of a control system failure, the control displays error messages. A constant tone is heard when an error code is displayed, and to silence this tone, press any button.
|
DISPLAY |
CAUSE |
PANEL BOARD CORRECTION |
|---|---|---|
|
“E-4” |
Control board overheating |
Turn switch to OFF position, then turn switch back to ON; if “E-4” continues, the board is getting too hot; check for signs of overheating behind the control panel; once panel cools down the controls should return to normal; if “E-4” persists, have control panel replaced |
|
“E-5” |
Oil overheating |
Turn switch to OFF position, then back to ON; if “E-5” continues, the heating circuits and temperature probe should be checked; once the unit cools down, the controls should return to normal; if “E-5” persists, have control panel replaced |
| “E-6 A” | Temperature probe open | Turn switch to OFF position, then turn switch back to ON; if display shows “E-6”, have the temperature probe checked |
|
“E-10” |
High limit |
Allow oil to cool, and then reset the high limit by manually pushing and holding the reset (red rocker) switch for 5 seconds. If the high limit does not reset, the high limit must be replaced. |
| "E-15" | Drain switch failure | Close drain, using the drain valve handle; if display still failure shows “E-15”, have the drain microswitch checked |
| “E-20 A” | Vacuum switch failure (stuck closed) | Press the timer button to try the ignition process again, and if “E-20 A” persist, check the air switch |
| “E-20 B” | Draft fan or vacuum switch failure (stuck open) | Press the timer button to try the ignition process again and if “E-20 B” persist, check the vacuum switch or the blower motor |
| “E-20 C” | Ignition modules not responding | Press the timer button to try the ignition process again; if “E-20 C” persists, check the ignition module, the spark ignitor per Pilot/Ignitor Module Section, the I/O board |
|
“E-20 D” |
Pilots not lit or no flame sense |
Press the timer button to try the ignition process again; if “E-20 D” persists, check the ignition module, the I/O board per Control & I/O Boards Section or the flame sense |
|
“E-31” |
Elements not hinged all the way down |
Check to make sure the elements are hinged all way down into the vat; check for obstructions under elements way down |
|
“E-41” |
Programming failure |
Turn switch to OFF position, then back to ON; if display shows “E-41”, the control should be re- initialized (See Programming Section) if the error code persists, have control panel replaced |
| “E-47” | Analog converter chip or 12 volt supply failure | Turn switch to OFF, then back to ON, if “E-47” persists, have the I/O board, or the PC board replaced; if speaker tones are quiet, probably I/O board failure |
| “E-48” | Input system error | Have PC board replaced |
| “E-70” | Faulty power switch, or switch wiring; faulty I/O board | Have power switch checked, along with its wiring; have Input/Output board replaced if necessary |
|
“E-92” |
24 VAC fuse on I/O board open |
Have components, in 24-volt circuit (I.E., hi limit, drain switch) checked for shorts |
