Ruud in Error Code
the LED display on the remote control. The chart on page 26 lists the error code
Source: rutgh-90xln-2__rud-professional-ultra-series-9-0-gpm-outdoor-tankless-spm.pdf
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Other Ruud Error Codes
turning the unit off and on. If problem persists please contact technical suppor
(cont.) Error Code 1L 05 Possible Cause Water heater has buildup of lime deposit
still displayed after taking the numbered steps above. Water heater is overheati
Call for Assistance When contacting the manufacturer, the following
in the display:
00-00-86." Below this section, there is a horizontal line underneath which there
". The design is enclosed within a rounded rectangular border.Priority In-Use In
Display flood, physical damage, or been under water should be turned off at the
or Display