Fuse, 10A

10-Amp Fuse Pack for Rheem Tankless Water Heater Electrical Protection

The Rheem RTG20239BD is a factory-supplied fuse kit containing five 10A protective fuses for select Rheem tankless gas water heater models. These fuses are designed to safeguard the unit’s internal control board and electrical components from current surges, short circuits, and overload conditions. Use of manufacturer-specified fuses is essential to maintain system safety, reliability, and UL compliance.

Application and Function

Each 10A fuse is installed on the unit’s low-voltage electrical circuit. If abnormal current is detected, the fuse opens to isolate and protect sensitive control elements. Fuses should be inspected and tested during troubleshooting of ignition failure, non-responsive controls, or intermittent power issues.

Product Specifications

• Part Number: RTG20239BD
• Amperage Rating: 10 amps
• Fuse Type: Fast-blow, cylindrical cartridge
• Pack Quantity: 5 individual fuses
• Compatibility: OEM-specified for use in Rheem tankless gas water heaters (refer to model cross-reference or service manual)

Installation and Replacement

Fuse replacement requires full power disconnection prior to servicing. Verify voltage with a multimeter before fuse installation. The control board should be inspected for damage or underlying electrical faults before installing a new fuse. Ensure proper seating within the fuse holder to avoid poor contact or arcing.

Although replacement is straightforward, all electrical work should comply with NEC and local code requirements. Use by trained HVAC technicians or licensed plumbers is recommended to ensure safe and effective service.

Contractor Notes

• Field Service Utility: Useful for on-site diagnostics and repairs involving power loss or shorted components.
• Preventative Maintenance: Stocking OEM fuses ensures system continuity and reduces downtime during emergency calls.
• OEM Integrity: Use of non-specified fuses may lead to failed diagnostics or voided warranty.

Benefits

• Protects electrical components from damage due to current faults
• Ensures safe operation of Rheem tankless systems
• Meets OEM design and regulatory requirements
• Supplied in quantity for service truck stocking or facility maintenance