PCB Kit

Rheem OEM PCB Kit – System Control Board for Tankless Gas Water Heaters

The Rheem RTG20329P PCB Kit is a factory-original replacement printed circuit board designed to restore full operational control to compatible Rheem tankless gas water heaters. Serving as the primary control module, this PCB governs key system functions including ignition, combustion management, water temperature regulation, and self-diagnostics.

This assembly is essential for resolving control-related faults or restoring functionality after board failure. As a direct-fit component, it integrates seamlessly with supported Rheem units, maintaining system performance to OEM standards without modification.

Component Functions

• Operational Control: Manages system functions including burner modulation, fan speed, and gas valve operation.
• Temperature Oversight: Regulates outlet water temperature in coordination with sensor feedback.
• Error Diagnostics: Interfaces with system diagnostics to display fault codes and aid in troubleshooting.

Technical Specifications

• Part Number: RTG20329P
• Component Type: Printed Circuit Board (Main Control Board)
• Gas Type: Compatible with LP or NG systems (model-dependent)
• Application: Rheem tankless gas water heater systems (check specific model compatibility)

Installation Guidance

Installation of the RTG20329P requires electrical safety protocols and experience with tankless water heater electronics. For accurate results, use antistatic precautions and ensure system power is disconnected before handling or replacing the board. It is highly recommended that a licensed HVAC or plumbing technician perform the installation to maintain warranty integrity and meet local code compliance.

Professional Notes

• Failure Indicators: Replacement may be required in cases of non-responsive units, recurring diagnostic errors, or combustion control failure.
• Inspection Tip: Check wiring harness condition and terminal seating before concluding board failure.
• Commissioning: After replacement, power cycle and perform a full function test. Reconfigure dip switches and confirm gas type selection if applicable.

Key Advantages

• OEM Match: Direct replacement ensures compatibility with no firmware flashing or custom calibration required.
• System Integrity: Maintains original safety limits and response curves.
• Service Efficiency: Supports faster diagnosis and streamlined repair on service calls.