Electrolux Washer Error Code E33

Error code E33 on an Electrolux washer signals an inconsistency between the anti-boiling pressure switch contact and the first-level pressure switch contact closure. The control board monitors both of these pressure switch contacts simultaneously during the wash cycle, particularly when the heating element is active. When the board detects that the anti-boiling contact and the first-level pressure contact are not in agreement, it interprets this as a fault condition and halts operation. The pressure switch assembly is responsible for reporting water level to the control board, and the anti-boiling function is a safety mechanism that prevents the water from reaching dangerously high temperatures by verifying water is present before allowing sustained heating.

A key diagnostic consideration with E33 is the possibility of current leakage from the heating element to ground. If the heating element's insulation has degraded, stray current can flow through the water and interfere with the pressure switch circuit, producing false or inconsistent contact readings. This type of fault can also damage the control board over time if left unaddressed. Technicians should test the heating element for ground leakage using a multimeter or insulation resistance tester, in addition to testing the pressure switch contacts for proper continuity and actuation.

Wiring between the pressure switch, heating element, and control board should be inspected for loose connectors, corrosion, pinched conductors, or broken terminals. Any of these wiring issues can cause intermittent or incorrect signals that trigger E33. If the pressure switch, heating element, and wiring all test within acceptable parameters, the control board itself may be the source of the fault due to a failed relay, burned trace, or damaged input circuit.