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75
INSTALLATION INSTRUCTIONS
Replace the front cover panel.
Turn on the remote control.
Turn on the gas and water to the water heater by
opening the shut off valves.
11
10
9
Start/Adjust
Error Code 88 Clearing
When a tankless water heater has a certain
number of hours of combustion, error code
“88” is shown on the remote control. 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). After these maintenance
activities are made, follow the steps below in order
to clear error code “88”.
Turn on the remote control.
Turn off the gas and water to the water heater by
closing the shut-off valves.
Press the DOWN adjustment button repeatedly
until the lowest setting temperature shows in the
LED display.
Press and hold the DOWN and UP adjustment
button for 5 to 10 seconds.
Turn on the gas and water to the water heater by
opening the shut off valves.
If error code "88" is still shown, repeat steps 1
through 5 above.
1
2
3
4
5
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