2-4
2.2.3 Error Log Codes
Code ERROR MESSAGE EXPLANATION
E03 ERROR TEMP PROBE FAILURE Temp probe reading out of range
E04 HI 2 BAD High limit reading is out of range.
E05 HOT HI 1 Oil temperature is past more than 410°F (210°C), or in
CE countries, 395°F (202°C)
E06 HEATING FAILURE A component has failed such as controller, interface
board, contactor, gas valve, ignition module or open-
high limit.
E08 ATO Board Error Controller has lost contact with ATO board.
E17 ATO Probe Error ATO probe resistance is out of range.
E20 Invalid Code Location SD card was removed during software upgrade.
E21 FILTER PAPER PROCEDURE
ERROR (Change Filter Paper)
24 hour timer has expired
E22 OIL IN PAN ERROR Oil may be present in the filter pan.
E25 RECOVERY FAULT Recovery time exceeded maximum time limit.
E27 LOW TEMP ALARM Oil is approximately 35°F (19.4°C) below setpoint.
E28 HIGH TEMP ALARM Oil temperature has risen 40°F (22.2°C) higher than
setpoint. If temperature continues to rise, the high limit
will shut the burner off when temperature reaches
425°F (218°C) Non-CE or 395°F (202°C) CE.