Vulcan Error Code 4 – Red Flashes

Fault Code 4 – Red Flashes: Duct thermistor open circuit.

Vulcan Fault Code 4 – Red Flashes

Fault: Duct thermistor open circuit.

Applies to: Vulcan Ducted Gas Heater Units

If a fault occurs, the green diagnostic LED will flash a number of times on the main board to indicate the fault. The LED is off for 4 seconds and then will flash the fault code. The fault code is repeated until reset or repaired. Match the number of times the LED flashes with the error to indicate the fault.
SKU: 428-2-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-2-3-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1 Category: Tag: