Viking Dishwasher 4-2 Error Code

4-2 on a Viking dishwasher means the control sees the current on the wash heater circuit outside the expected range. That heater is what warms the water circulating through the machine.

The heater, per the manual

• Type: flow-through, sitting in the water path from the sump to the circulation pump.
• Ratings: 120 volts, 10 amps, 1200 watts.
• Expected resistance: about 12 ohms from the gray wire to neutral.
• Timing: diagnostic mode fires it only after the motor check, sixteen seconds following motor start.

For the VDB200 manual the action line is brief: inspect the element’s wiring and look for 12 ohms.

Four possible causes

1. Wires disconnected between the main control and the wash heater.
2. A faulty wash heater.
3. A faulty main control.
4. A faulty temperature sensor. It is unexpected to find a sensor listed under a heater code, but the manual does.

In the tables 4-2 carries the service-cycle marking. Should a technician read zero ohms across the heater, the instruction is to inspect the wiring, and swap the heater only if the wiring proves sound.

For the owner

Viking publishes nothing an owner can do about it. Never let the element run dry; the pump flow code 3-2 is there so the heater stays off whenever the water is still. Both 3-2 and 4-2 on the display? Report the pair.

Check these as well

• 4-1: covers the sensor that can trigger this code
• 3-2: flow too weak to allow the heater on
• 5-3: a different circuit, the drying heater

Viking heater repair in Los Angeles

Phone (310) 692-1112 for help with a wash heater code in Los Angeles. Read out the code with your model number, plus whatever else was flashing. The Viking dishwasher repair page has more on what to have ready.

Source: Viking Preferred Service Manual SMK-0005; SMK-0006; SMK-0003; SMK-0002