The timer in question it the GE 15207 series
How to wire GE 15207 timer
GE-15207-clock
Intel reliability is working on the problem.
According to one guy who gave me feedback, he has a new GE timer installed by electrician at his residence. No generator. No interference source nearby. Ordinary residence. His neighbors don't have clock problems, etc. They are using the timer on 240V water heater.
The timer has dip switches to select voltage between 120, 240, 277
The clock motor shows it to be 125V AC, but I don't know if the markings are accurate
Get this... the ground wire does not connect to timer ... when there is 120V connected to timer, the 125V clock motor has a neutral and hot. That seems ordinary.
However, when 240 is connected to timer ... the 125 volt clock motor has no neutral wire or ground wire ... just the two hot leads from the 240V circuit.
So the electronics are somehow converting 240 Volt to run a 125V AC clock motor without a neutral wire or ground wire.
How is that possible?
And how would that play into the clock running fast?