Rinnai Tankless Support ExpertsProfessional Rinnai Tankless Support
Complete Rinnai tankless support from experienced technicians. We provide professional Rinnai tankless support for all models including service, maintenance, and emergency repairs.
Rinnai Systems We Service
From residential tankless water heaters to commercial systems and combination units, we service all Rinnai endless hot water solutions with expert knowledge.
Residential Series
Endless hot water for homes
Systems We Service:
Key Features:
- Endless hot water
- Condensing efficiency
- Wi-Fi connectivity
- Freeze protection
Commercial Series
High-demand applications
Systems We Service:
Key Features:
- High flow rates
- Multi-unit capability
- Advanced controls
- Durable construction
Combination Units
Space and water heating combined
Systems We Service:
Key Features:
- Space heating
- Hot water
- Compact design
- Zone control
Rinnai Problems We Resolve
Our specialized technicians resolve these common Rinnai tankless water heater issues with specialized expertise.
Scale and Mineral Buildup
Reduced flow, temperature fluctuations, error codes, reduced efficiency
Professional descaling and water quality treatment
Venting System Issues
Unit shutdowns, combustion errors, outdoor backdraft
Venting inspection, cleaning, and proper configuration
Temperature Sensor Problems
Inaccurate temperatures, system cycling, error displays
Sensor testing, cleaning, and calibration or replacement
Gas Valve and Control Issues
No ignition, flame problems, pressure irregularities
Gas system diagnostics and valve or control replacement
Heat Exchanger Problems
Reduced heating, condensate leaks, efficiency loss
Heat exchanger inspection, cleaning, and repair
Common Rinnai Error Codes
Rinnai tankless units display fault codes on the front display or wireless controller. Decode the most common Union County calls before you pick up the phone.
Code 10 – Air supply or exhaust blockage
Typical cause: blocked intake/exhaust termination, snow over the vent, dirty combustion fan, or improperly sized vent run. Often clears once the termination is cleared — call us if it returns. Full Rinnai Code 10 diagnostic guide →
Code 11 – No ignition / failure to ignite
Typical cause: gas supply issue, dirty flame rod, or a weak hot-surface igniter. Flame rod cleaning resolves a large share of code 11 calls on units 5+ years old. Full Rinnai Code 11 diagnostic guide →
Code 12 – Flame failure (loss of flame)
Burner lights, then goes out mid-cycle. Usually points at gas pressure drops under combined household demand, an oxidized flame rod, or scale-fouled burner ports. Full Rinnai Code 12 diagnostic guide →
Code 14 – Thermal fuse / overheat lockout
Non-resettable safety. Almost always tied to scale buildup in the heat exchanger, restricted venting, or a failing combustion fan. Requires a qualified tankless technician — do not just replace the fuse. Full Rinnai Code 14 diagnostic guide →
Expert Rinnai Tankless Service
With specialized training on Rinnai tankless technology and endless hot water systems, we're the water heating experts New Jersey trusts for reliable service.