Honeywell Control unit DVI980-N mod. 02 0490602U

The Honeywell DVI980-N mod. 02 control box is a control unit designed for 1-stage forced draught and atmospheric gas burners, capable of operating with DC valves. It supports flame detection via an ionization probe, infrared flicker detector (IRD 1020.1), or UV flame sensor (UVD 971). The unit operates at a supply voltage of 220–240 V, provides ignition spark energy of 10 mJ at 20 kV, and has a sensitivity of 1.0 µA with a minimum required ion current of 1.5 µA. It weighs 0.19 kg net (190 g including wiring base) and has an IP40 protection class. The control box can be installed in any position.

When selecting a control box of this type, ensure the supply voltage matches the burner's electrical system (e.g., 220–240 V). Verify the flame detector type (ionization probe, IR, or UV) is compatible with the control box's input specifications. Check the ignition voltage and spark energy requirements of the burner to match the control box's output. The mounting position is flexible, but the wiring base must be correctly connected according to the manufacturer's diagram. Always compare the control box's sensitivity and ion current thresholds with the burner's flame characteristics.

Common failure modes for this type of control box include failure to ignite, intermittent flame loss, or no response to flame signals. Symptoms may include the burner not starting, locking out after repeated ignition attempts, or shutting down during operation. Check the ignition transformer, flame detector, and wiring connections for faults. Verify that the ion current or UV/IR signal is within the required range, and inspect for loose connections or damaged components.