I explain straightforward steps to diagnose common issues with Rinnai tankless water heaters — from no hot water and temperature swings to error codes and unexpected shutdowns. This post covers safe reset steps, routine maintenance like flushing and cleaning the inlet filter, vent inspections, and when to call a licensed technician. If you’re in Dade City or nearby counties and want help with installation, maintenance, or a professional inspection, visit the full guide and contact us. https://wix.to/jou4RU0
