How to Use a Rinnai MCC-45-3US Thermostat Controller

The Rinnai Continuous Flow water heater includes the MCC-45-3US remote control to manage the temperature of the hot water in the system. Control the water temperature, system status and water flow from the remote. The Rinnai heater remote can increase your water temperature up to 180 degrees. Water temperatures over 120 degrees increase the likelihood of burns and pose a significant risk to small children.

Instructions

- 1
  Turn off all faucets on the water heater's line. Tap "H" on the remote to increase the water temperature. Tap "C" to decrease the water temperature. The current temperature appears on the remote's display. Press the button repeatedly until the desired temperature appears.
- 2
  Watch the "In Use" indicator to determine if the water heater is functioning. When you open the hot water flow on any faucet, the "In Use" indicator illuminates green to indicate that the burner is functioning to heat the water.
- 3
  Press "M" in the upper right corner repeatedly to view any stored error messages. Address system errors with a repair technician.
- 4
  Push the "H" button on the remote and hold it for two seconds. Press "M" while holding "H" to view the current water flow.
- 5
  Press and hold "C," then press "M" to display the current temperature of the outlet water or the temperature of the water at the hot water line.

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