N-Series error indication switch 12554-A 02-19 I page 2 of 2
Rinnai NZ Ltd (0800 743 624)
N-Series
Error indication switch (REUOPU3)
Testing
The operation can be quickly tested by passing
water through the unit with the gas supply shut
o.
After several ignition attempts the combustion
fan should be heard to stop and error code 11
should display on the inbuilt controller—within
15 seconds the error switch should reverse
position. This can be veried with a multimeter.
The switch should remain in this position.
Turn o the water ow and turn on the gas
supply. Restart the water ow. The water
heater should ignite as normal and the status
of the monitor should display the water heater
set temperature. At this point the error switch
should return to the normal position.
Error codes
General error codes
When an error occurs the Rinnai INFINITY will
shut itself down. Most errors will reset when the
water ow stops, either by a tap being turned
o, circulating pump stopping and/or the power
being switched o.
Lime check (LC) error code
In hard water areas calcium is deposited
within the tubes of the heat exchanger. This
reduces the heat transfer within the water
heater. The Rinnai INFINITY detects this and
displays an LC error code. This will not prevent
the operation of the unit, but indicates to the
customer that maintenance is required.
When LC is displayed the error switch will
remain in the reverse position at all times,
except where a remote control (if tted), is
switched o.
The time charts shows the relationship between
the errors indicated by the error switch, and the
output shown on the inbuilt controller.
Response to errors
If an error is currently active, the error code
can be read o the inbuilt controller. Any active
error, other than LC, indicates the unit is not
currently heating the water.
Error codes 11 and 12 usually indicate a failure
in the gas supply. To reset an error code 11
or 12, the water ow through the unit must be
stopped for a few seconds and then restarted.
If an error has occurred the error history can
be read from the controller using the procedure
described below.
All errors, other than resetting errors 11 and
12 must be dealt with by a Rinnai authorised
service centre. Providing the error code to the
service centre at the time of making a service
call will be helpful in rectifying the problem.
Retrieving error code history
1. Have the controller turned o, but the power
on.
2. Hold the On/O button for two seconds
while at the same time pressing the up
arrow button, and then release.
3. The controller will display the last nine error
codes, the latest code displaying rst. If less
than nine codes, or no error codes ‘--’ will
be displayed.
Error codes are displayed for three minutes. To
return the controller to normal operation, press
the temperature up arrow and then press and
hold the On/O button.
