GE GFDS250EF Manual page 62

Components –
• Under normal operating conditions this thermostat will remain closed at
all times, allowing the heaters to cycle based on inlet and outlet
thermistor values.
• When the inlet backup thermostat opens, it interrupts line voltage to the
heater or gas valve relays on the UI/IMC.
• Resets Automatically
X
Gas Models
Inlet Back-up Thermostat
Locations
X
Electric Models
62