[larrywehr]

I have had two transformer failures on this GE Cooktop in the last 3 months. What might cause this part to fail? It should be putting out 240 VAC on one circuit and 12 VDC on the other. It does so in when new but now has zero output.

[Simon / APP Team]

Hi.

You have a short some where on the load side. Check all wires and switches.
It's not going to be easy to diagnose this short because it's most likely the small one.

Here are the breakdown diagrams and Gas & Burner parts for GE ZGU385LSM2SS - AppliancePartsPros.com

Simon.

[larrywehr]

Is it possible that a high voltage input could cause the transformer to fail as opposed to a short on the out put side?

[Simon / APP Team]

Hi.

The short on the hi voltage side is not a very common and you can easily check it.
With unit unplugged disconnect the hi side wires from the transformer and using the multimeter check each wire to the ground. You should not read any continuity.
If the continuity present - follow up the line to check it.

Simon.

[larrywehr]

Originally Posted by Simon / APP Team

Hi.

The short on the hi voltage side is not a very common and you can easily check it.
With unit unplugged disconnect the hi side wires from the transformer and using the multimeter check each wire to the ground. You should not read any continuity.
If the continuity present - follow up the line to check it.

Simon.

I followed the above advise and found NO SHORT. I installed the new transformer (and added a surge protector to the circuit). It worked for a while but has now failed again. I'm guessing that it only shorts out when a certain combination of burners is on or only when they are turned on/off in some unique sequence. Is that likely? What other component would most likely cause such an intermittent short?

[Simon / APP Team]

Hi.

It could be burner switches, indicator lights, spark module or wire harness. Check the harness first.

Simon.