78
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 77 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.
And, 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
Care Instructions
CARING FOR YOUR WATER HEATER
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