SpacePak ESP-2430 resetting when EEH duct heater comes on
We have an issue where the EEH-10 duct heater turning on causes the air handler to reboot. This happens both in emergency heat mode and when the thermostat calls for aux heat (and maybe in defrost mode, too).
SpacePak support confirmed that the wiring looks correct. When the wires going to the EEH are disconnected, the system performs as expected. During the troubleshooting with SpacePak and after the system had rebooted a few times there, was a spark & pop in the top left corner of the board. But it didn't fry anything because the heat pump still works with the breaker to the duct heater turned off.
The air handler shows a LAT SHORT error. Could the duct heater coming on cause the sensor to send sort of overload/voltage to the board? What else could make the board go haywire and cause to reboot when the duct heater comes on?
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