Honeywell Gas boiler control unit S4962DM3003B

The Honeywell S4962DM3003B is a gas boiler control unit designed for use with VK41 series gas regulators. It operates on a supply voltage of 220–240 V and features a two-position electric actuator. This control board is part of the S4962DM3003 model and is intended for integration into gas-fired heating systems.

When selecting a control board of this type, ensure the supply voltage matches the system's electrical rating (e.g., 230 V). The board must be compatible with the specific gas regulator series (e.g., VK41) and the actuator type (two-position). Installation involves connecting the board to the regulator's electrical circuit, typically via a dedicated connector, and positioning it within a 90-degree angle from the vertical actuator orientation.

Common failure modes for such control boards include ignition failure, erratic flame control, or complete loss of burner operation. Symptoms may include the burner not lighting, flame loss during operation, or the system failing to respond to control signals. Check the board's electrical connections, supply voltage, and compatibility with the gas regulator to diagnose issues.