FREQUENTLY ASKED QUESTIONS
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Troubleshooting
- Why don’t I have hot water as soon as I turn on the tap?
- Why do I have to wait to get hot water after turning on the tap?
- Why don’t I have any hot water when I open the tap?
- Why is white smoke coming out of the exhaust?
- Why does the fan continue to run after I turn off the hot water tap?
- How does cold weather affect my tankless water heater?
- Why does my tankless water heater go cold?
- What are these error codes?
- Control-R™ - How do I factory reset the module?
- Control-R™ - Can I disable Circ-Logic and turn on the recirculation pump with no restrictions?
- Control-R™ - I pressed the push button and the pump didn’t turn on. What’s up?
- Control-R™ - How do I know if the module is in pairing mode for the on-demand accessory?
- Control-R™ - How do I Factory Reset an On-Demand Recirculation Accessory (Push Button, Motion Sensor, etc.)?
Buyer's Info
- Does a tankless water heater work differently with low-flow faucets or showerheads?
- Can a Rinnai Tankless Water Heater be installed in a mobile home?
- Does Rinnai offer a battery backup system?
- Does Rinnai manufacture electric tankless water heaters?
- What types of fuel do Rinnai Tankless Water Heaters use?
- Do Rinnai Tankless Water Heaters have a UL Rating?
- Can an external Rinnai Tankless Water Heater be used in cold climates?
- What is the minimum water flow required to operate a Rinnai Tankless Water Heater?
- What is the life expectancy of a Rinnai Tankless Water Heater?
- Can I use a Rinnai Tankless Water Heater on my houseboat or RV?
- Does a Rinnai Tankless Water Heater have a standing pilot?
- Why should I buy a tankless water heater?
- What are the advantages and disadvantages of a tankless water heater?
- What is the best gas tankless water heater?
- How much does it cost to install a tankless water heater?
- What does Consumer Reports say about tankless water heaters?
- Can I buy a Rinnai tankless water heater at Lowe’s or Home Depot?
- How does a tankless water heater work?
- Are tankless hot water heaters better than a tank?
- How big is a tankless water heater?
- Is a tankless water heater right for me?
- What is an on-demand hot water heater?
- Are tankless water heater rebates available?
- Are there tax credits available if I purchase a Rinnai tankless water heater?
- Can a Rinnai tankless water heater be used to heat a pool or spa?
- Why does a tankless water heater cost more than a tank water heater?
- How long does a tankless water heater last?
- What size tankless water heater do I need?
- Control-R™ - How many push buttons and motion sensors are supported per each module?
- Control-R™ - Is the homeowner’s wi-fi necessary for recirculation with on-demand accessories?
- Control-R™ - What happens when the power goes out?
- Control-R™ - If I swap out the module for any reason, do I need to re-pair the Push Button or Motion Sensor?
- Can I still get hot water if the power is out?
Maintenance
Installation
- Gas Line Sizing Table
- Can a Rinnai Tankless Water Heater be converted to a different gas type?
- What is temperature rise?
- What are the power supply requirements for a Rinnai Tankless Water Heater?
- Can I use a recirculation line with Rinnai Tankless Water Heaters?
- How does recirculation work?
- How do I install a tankless water heater?
- Can I install a Rinnai tankless water heater myself?
- Control-R™ - How do I configure the tankless water heater dip switches or parameter settings to enable recirculation?
- Control-R™ - 5 Key Installation Tips
- Control-R™ - How long do I have to pair the on-demand accessory when the LED turns green?
- Control-R™ - What is the difference between factory reset and power cycle?
- Pairing a Control-R module
- MC-91-2 Controller Use Video
- MC195T Controller Use
- Setting Control-R Recirculation parameters
