Rinnai Water Flow Servo & S Valve — Part #104000029
Product overview
Genuine Rinnai replacement assembly for tankless water heater flow control.
Includes water flow servo motor and S valve preassembled for proper operation and fit.
Part number: 104000029
Application: Specific Rinnai tankless water heater models that use this assembly for water flow regulation. Verify compatibility with your model before ordering.
Key features
OEM quality: Manufactured to Rinnai specifications for reliable performance and durability.
Precise flow control: Servo motor modulates the S valve to regulate water flow and maintain proper temperature and system operation.
Plug-and-play replacement: Preassembled unit simplifies installation and reduces service time compared with separate components.
Tested for compatibility: Engineered to integrate with Rinnai control and sensor systems used on applicable models.
When to replace
Erratic hot water temperature or failure to maintain set temperature.
Flow-related fault codes or service errors indicating valve/servo malfunction.
Audible clicking or motor noise from the valve assembly.
Visible leakage, corrosion, or physical damage to the valve housing.
Installation notes
Installation should be performed by a qualified service technician familiar with Rinnai tankless water heaters.
Power and water must be shut off before replacing the assembly.
Follow Rinnai service manual instructions for your specific model for proper disassembly, electrical connector orientation, torque specs, and system calibration.
After installation, run diagnostic checks and verify there are no fault codes and that water temperature regulation is correct.
Compatibility and verification
Confirm your unit’s model and serial number to ensure Part #104000029 is the correct replacement.
If unsure, consult the Rinnai service manual for your model or contact a Rinnai-authorized service provider.
Ordering and warranty
Sold as the complete servo and S valve assembly (Part #104000029).
Check with your supplier or Rinnai for warranty coverage and return/exchange policies.
Technical support
For troubleshooting, diagnostic codes, and wiring/installation guidance, refer to the service manual for your Rinnai model or contact an authorized Rinnai service technician.
Need help verifying compatibility or arranging professional installation? Provide your Rinnai model number and serial number and we’ll confirm fitment and recommend next steps.
Rinnai Water Flow Servo & S Valve — Part #104000029
Product overview
Genuine Rinnai replacement assembly for tankless water heater flow control.
Includes water flow servo motor and S valve preassembled for proper operation and fit.
Part number: 104000029
Application: Specific Rinnai tankless water heater models that use this assembly for water flow regulation. Verify compatibility with your model before ordering.
Key features
OEM quality: Manufactured to Rinnai specifications for reliable performance and durability.
Precise flow control: Servo motor modulates the S valve to regulate water flow and maintain proper temperature and system operation.
Plug-and-play replacement: Preassembled unit simplifies installation and reduces service time compared with separate components.
Tested for compatibility: Engineered to integrate with Rinnai control and sensor systems used on applicable models.
When to replace
Erratic hot water temperature or failure to maintain set temperature.
Flow-related fault codes or service errors indicating valve/servo malfunction.
Audible clicking or motor noise from the valve assembly.
Visible leakage, corrosion, or physical damage to the valve housing.
Installation notes
Installation should be performed by a qualified service technician familiar with Rinnai tankless water heaters.
Power and water must be shut off before replacing the assembly.
Follow Rinnai service manual instructions for your specific model for proper disassembly, electrical connector orientation, torque specs, and system calibration.
After installation, run diagnostic checks and verify there are no fault codes and that water temperature regulation is correct.
Compatibility and verification
Confirm your unit’s model and serial number to ensure Part #104000029 is the correct replacement.
If unsure, consult the Rinnai service manual for your model or contact a Rinnai-authorized service provider.
Ordering and warranty
Sold as the complete servo and S valve assembly (Part #104000029).
Check with your supplier or Rinnai for warranty coverage and return/exchange policies.
Technical support
For troubleshooting, diagnostic codes, and wiring/installation guidance, refer to the service manual for your Rinnai model or contact an authorized Rinnai service technician.
Need help verifying compatibility or arranging professional installation? Provide your Rinnai model number and serial number and we’ll confirm fitment and recommend next steps.