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Samantha PerezSep 7, 2025
What to do if Rinnai B20 starts then the water goes cold?
- Mmelissa09Sep 7, 2025
If your Rinnai Water Heater starts but the water goes cold, verify that the power is still on and try opening your hot water tap further.
To Next PageTo Next PageWhat to do if Rinnai B20 starts then the water goes cold?
If your Rinnai Water Heater starts but the water goes cold, verify that the power is still on and try opening your hot water tap further.
What to do if power interruption during Bath fill in Rinnai Water Heater?
If a power interruption occurs during a bath fill and water doesn't flow when power is restored to your Rinnai Water Heater, turn off all hot water taps and press the On/Off button twice.
What to do if my Rinnai B20 starts then shuts down immediately?
If your Rinnai Water Heater starts and then immediately shuts down, verify that the power is still on. Also, check that the gas isolation valves at the unit and the gas meter are fully open. Ensure your hot water tap is fully open as well.
What to do if my Rinnai B20 Water Heater has no ignition or gas supply?
If your Rinnai Water Heater has no ignition or gas supply, check that the gas is turned on at both the water heater and the gas meter or cylinder.
Why does my Rinnai B20 Water Heater start and then the water goes cold?
If your Rinnai Water Heater starts and then the water goes cold, verify that the power is still on. Also, try opening your hot water tap further.
What to do if there is a power interruption during bath fill with my Rinnai B20 Water Heater?
If there's a power interruption during a bath fill and water won't flow on power reinstatement with your Rinnai Water Heater, turn off all hot water taps and press the On/Off button twice.
What to do if my Rinnai B20 experiences flame failure or low gas flow?
If your Rinnai Water Heater experiences flame failure or low gas flow, check that the gas is turned on at the water heater and gas meter or cylinder. Also, check for any obstructions to the flue outlet.
What to do if there is a flame failure / low gas flow in my Rinnai B20 Water Heater?
If you experience a flame failure or low gas flow with your Rinnai Water Heater, first, ensure that the gas supply is turned on at both the water heater and the gas meter or cylinder. Then, check for any obstructions that might be blocking the flue outlet.
How to fix noticeable reduction in water flow in Rinnai Water Heater?
If you notice a reduction in water flow with your Rinnai Water Heater, the inlet water filter may need cleaning. A service call is recommended.
What to do if Rinnai B20 does not start?
If your Rinnai Water Heater isn't starting, make sure the power is on at the unit and check that the isolation valves are open.
General| Type | Tankless |
|---|---|
| Ignition | Electronic |
| Gas Type | Natural Gas or Propane |
| Fuel Type | Gas |
| Energy Factor | 0.82 |
| Ignition Type | Electronic |
| Capacity | 20 Litres per minute |
| Energy Efficiency | 0.82 Energy Factor |
| Installation | Indoor |
| Maximum Flow Rate | 20 Litres per minute |
