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Bosch 8738725959 Control Unit Features:
- Operates on 120V AC power.
- Serves as the electronic control board for compatible HVAC equipment.
- Reads thermostat and sensor inputs to manage the heating cycle.
- Switches ignition, valve, and blower circuits at the correct sequence points.
- Replaces a failed board when the unit will not fire, locks out, or ignores a call for heat.
- Includes a bank of factory-keyed plug-in ports around the perimeter of the module.
- Provides a six-pin power connector, multiple two- and three-pin sensor plugs, and two high-density headers.
- Accepts existing harnesses in only one orientation for a splice free swap.
- Encloses all circuitry in a ribbed black polymer housing.
- Features integrated snap tabs for chassis mounting.
- Ships with a mounting bracket and a sealed set of LPG conversion orifices.
- Alternate part number 8-738-725-959.
Additional Features:
The Bosch 8738725959 is a 120V AC control unit that acts as the electronic command center for compatible HVAC equipment, reading thermostat and sensor inputs and switching the ignition, valve, and blower circuits on and off at the correct points in the heating cycle, which makes it the part to replace when a unit fails to fire, locks out, or stops responding to a call for heat. All wiring lands on a bank of factory-keyed plug-in ports positioned around the perimeter of the module, including a six-pin power connector, several small two- and three-pin sensor plugs, and two high-density headers, so each existing harness seats in only one orientation and the board can be swapped without cutting or splicing any leads. The circuitry is fully enclosed in a ribbed black polymer housing with integrated snap tabs for chassis mounting, and the assembly ships with a mounting bracket and a sealed set of LPG conversion orifices.