Rheem Solar Controller Kit Installation Instructions Manual page 9

SOLAR CONTROLLER AND SOLAR MONITOR
SOLAR MONITOR
A solar monitor is located on the side of the solar control unit and houses a
green and a red LED.
The green LED, marked "Solar", indicates the current operational mode of the
solar water heater and the red LED, marked "Attention", indicates a fault mode.
The green LED will emit either a constant glow or a series of flashes, with a
2 second interval between each series.
The red LED will emit a series of flashes, with a 2 second interval between
each series, only if there is a particular fault condition with the system.
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