76
Start/Adjust
Maintenance Notice
Maintenance notice is an optional control and is
inactive as default. Maintenance notice reminds
users of water heater maintenance activities such as
flushing the heat exchanger or replacing the water
treatment filter (if applicable) in order to maximize the
life of your tankless water heater. Contact technical
service department listed on page 76 of this use
and care manual if you are not familiar with these
maintenance activities.
Turn off the remote control.
Turn off the gas and water to the water heater by
closing the shut-off valves.
Press and hold the “▲“and “▼”button until “1Y ” is
displayed on the built-in display.
Press the “▲“or “▼”button until “8A ” is displayed.
Press and hold the power button on the build-in
display for 1 second.
The current setting time is displayed on the display.
(Factory setting is “OFF”)
Press the “▲“or “▼”button to choose “50”, “75”,
“100” or “OF”.
Turn on the gas and water to the water heater by
opening the shut off valves.
When tankless water heater has a certain number
of hours of combustion, error code “88” is shown
on the display. It is highly recommended to perform
water heater maintenance activities such as flushing
the heat exchanger and/or replacing the water
treatment filter (if applicable).
1
2
3
4
5
Displayed Maintenance Notice Hour
50 500 hours
75 750 hours
100 1,000 hours
OF OFF
6
CARING FOR YOUR WATER HEATER
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