0050116 Genuine Ignition Microswitch Daisy Chain for Euro, Omega Gas Cooktops OCG64FFX GOC64 EPZ4GSXV EPZ4GSFDS EPZ3WGCTSS

On Euro and Omega gas cooking appliances, the ignition is triggered by small microswitches behind the control knobs, linked together on one lead in what's known as a daisy chain. 0050116 is the genuine chain listed for the OCG64FFX and GOC64 cooktops and for the EPZ4GSXV, EPZ4GSFDS, EPZ3WGCTSS and EGZ60WCTSXS. It's the part to look at when burners won't spark or the igniters won't stop clicking.

Burner won't spark, or the igniters keep clicking?

Pushing in and turning a gas knob presses a microswitch on the tap spindle, which tells the spark generator to fire. If a switch on the chain fails open, that burner won't spark. If one sticks closed, often after a boil-over gets moisture or food residue into it, the igniters click constantly even with the knobs off. Because the switches share one harness, the whole chain is normally replaced rather than a single switch.

Part details

• Genuine part 0050116
• Ignition microswitches joined on a daisy chain harness
• For Euro and Omega gas cooktops
• Listed for OCG64FFX, GOC64, EPZ4GSXV, EPZ4GSFDS, EPZ3WGCTSS and EGZ60WCTSXS

Fitting the microswitch chain

Turn the gas off at the isolation valve and switch the power off at the wall. This job should be done by a licensed gas fitter, as the cooktop surface and burner parts come off to reach the gas taps. Count the switches on the old chain and make sure it matches before fitting, clip each switch onto its tap the same way, then test every burner for spark and flame.

Questions about this part

My igniters keep clicking with the knobs off, is it this part?

Usually, yes. Constant clicking means a microswitch is stuck closed, often from moisture after a spill. Letting the cooktop dry out can clear it for a while, but if the clicking keeps coming back, the chain needs replacing.