What Does This Error Mean?

A Janome foot controller that does not respond is most often caused by a loose cable connection at the machine's controller port. Unplug and firmly reinsert the foot controller cable. If the machine runs at full speed regardless of pedal pressure, the internal rheostat has worn out and the controller unit needs replacement.

Affected Models

Janome 3160QDC
Janome HD3000
Janome 6700P
Janome Skyline S9
Janome Memory Craft 9450
All Janome machines with detachable foot controller

Common Causes

Foot controller cable not fully plugged into the machine socket
Damaged cable — internal wire break near the connector
Worn rheostat inside the controller — no variable resistance
Carbon contact plate inside controller dirty from long use
Machine Speed Controller (if present) set to minimum, overriding pedal

How to Fix It

Unplug and reinsert the controller cable.

Locate the foot controller socket on the lower right front of the Janome machine. Fully unplug the cable and then reinsert it until the connector seats firmly. A partially connected cable causes no response or intermittent operation.
Check the Speed Controller setting.

Many Janome models have a manual Speed Controller slider on the front of the machine. If this slider is set to its minimum position, it can prevent the machine from starting even with full pedal pressure. Slide the Speed Controller to mid-range or higher and test the pedal again.
Test pedal response across full travel.

Press the pedal very gently from the very first point of contact. A working rheostat should cause the machine to begin moving at very low speed with just slight pressure. If the machine either does not start at all or jumps immediately to full speed, the rheostat has failed.
Inspect the cable for physical damage.

Run your fingers along the full cable length from the pedal to the connector. Focus on the areas where the cable bends most — at the pedal entry and near the connector. A cracked outer jacket or a stiff section usually indicates an internal wire break at that point.
Replace the foot controller.

Search for a replacement Janome foot controller that matches your machine's voltage (110V or 220V) and connector type. Janome model numbers are on a label underneath the machine. A genuine Janome replacement or a compatible aftermarket controller from a sewing supply shop will restore full speed control.

When to Call a Professional

Janome foot controllers are available as replacement parts. If the rheostat is confirmed failed (full speed with no pedal pressure), ordering a replacement controller for your specific Janome model is the correct repair.