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2. To set the desired temperature on the control, all hot water faucets must be closed. If there
are remote controls installed, press the “Priority” button on the control you want to change the
setting on and the “Priority” indicator light will glow.
3. Press the Up or Down button until the required temperature is displayed on the digital
monitor. The default available water temperature range for the main control is 98-120ºF.
4. To operate the water heater, simply turn any hot water tap on. This will automatically light the
burner and provide hot water at the preset temperature. If the optional remote controls have
been installed, the “IN USE” indicator light will glow on all remote controls.
5. The control(s) can also display diagnostic codes, water flow rate through the unit (in gallons
per minute), and the outlet water temperature.
6. Press and hold the “On/Off” button for 2 seconds. While holding the “On/Off” button, press
the “Up” button to display a sequence of up to 9 diagnostic codes, if any, stored in memory
that has been experienced. Any diagnostic codes will be displayed on the digital monitor in
sequence starting with the most recent code. To exit this mode, press the “On/Off” button
and “Up” button as before.
7. Press and hold the “Up” button for 2 seconds and without releasing, press the “On/Off” to
display the water flow through the water heater with hot water in use (GPM = Display
Readout X 0.1).
8. Press and hold the “Down” button for 2 seconds and without releasing, press the “On/Off” to
display the outlet water temperature while in use (degrees F).
Figure 40. Remote Control and the Description of Functions on All Controls.
NOTICE
The temperature can only be adjusted between 98F and 110F when the hot water tap is open and
hot water is flowing. This is a safety feature to prevent scalding while hot water is in use.
NOTICE
The default temperature setting that will appear when the water heater is first connected to the
electrical supply is 104ºF. In the event of a power interruption, the unit will retain its set temperature
for up to 6 hours. If the power is interrupted for more than 6 hours, the unit will revert back to a
temperature of 104°F.
Priority Button Temperature Display Priority Indicator In Use Indicator