Error Code 7C
The water direction controller at the bottom isn't moving properly
Moderate
Address soon - your appliance may not work properly
Also displayed as: No display (7C in recall)
What This Means
Motor gear (vane motor) is out of order; Sensor vane is out of order; Vane is physically blocked by dishes or debris
What actually causes this:
The mechanism that aims water spray in different directions is stuck or the position sensor failed
First Thing to Check
Check if a large dish or pan in the bottom rack might be physically blocking the spray mechanism
Parts Involved
How to Fix
- 1
1. Check the connections for the motor vane and sensor vane connectors — reconnect
- 2
2. Check whether the coil in motor vane is conductive (remove connectors before measuring) — check resistance between Red and Black wire (CCW) and between White and Black wire (CW). Normal: approximately 1.625-1.796k ohms
- 3
3. Check position sensing with sensor vane (use n5 Service test mode) — check conduction between Brown and Black wire. Sensor ON: 0V, Sensor OFF: 5V
- 4
4. Adjust Motion Assembly and find the fault — replace if faulty
- 5
5. Check whether motor vane is operating normally — check operation voltage: Normal 110-120V. CCW: voltage between CN401 pin 8 (Red) and CN101 White. CW: voltage between CN401 pin 7 (White) and CN101 White. Normal: 110-120V while operating
- 6
6. Check the Power Relay
Other Error Codes for DW80M9960US
The dishwasher's main computer and the display board can't talk to each other
The motor controller board inside the dishwasher stopped responding
Water is leaking inside the base of the dishwasher
Too much water detected inside the dishwasher
The water distribution motor that directs spray isn't working properly
The main wash pump that sprays water isn't working properly
The dishwasher door isn't fully closed
The automatic door-opening feature isn't working