3535
Operating Instructions
Please check the failure display on the remote controller or
the combustion lamp on the main body.
[Remote controller]
In the event of a failure, the cause is
notified by a blinking failure display.
Please resolve the problem in
accordance with the table below.
Display Description Remedy
(This display is an example.)
Failure display blinks
Ignition failure
Check whether the gas supply is off.
Reset by turning off and on the power on/off button of
remote controller.
It turns back to normal when no error displays after running
hot water.
If the error still persists, call service.
*(F) 11
(if using RCM3211) (if using RCS3211)
Call service.
Clogging of neutralizer
*(F) 29
Combustion Abnormality
(burner sensor detects high temperature)
Reset by turning off and on the main power.
If the error still persists, call service.
*(F) 90
Combustion Abnormality
(appliance shuts down)
Reset by turning off and on the main power.
If the error still persists, call service.
*(F) 99
*(F) ## indicates an error code from the secondary unit in a quick connect (2-unit) pack.
Call service.
The neutralizer needs to be
replaced soon.
*(F) 92
[Combustion lamp]
In the event of a failure, you are notified by the combustion lamp blinking at the front of the unit.
Please resolve the problem in accordance with the table below.
• Fault occurs with the unit.
Make sure that the gas valve is open.
Close the hot water tap, then reopen it, and
it is back to normal if the combustion lamp is
no longer lit.
Combustion lamp Details of Failure Remedy
Continuously blinking
Lit
Unlit
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