Diagnostic Features Of The Solar Controller - Rheem Solar Loline Water Heater Owner's Manual And Installation Instructions

DIAGNOSTIC FEATURES OF THE SOLAR CONTROLLER

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.
The modes are:
Flashes Operational Modes
solid green
Standby mode
(remains on)
green Standby mode
slow pulse (power on for less than 48 hours)
green
Circulating water through collectors
rapid pulse
Circulating water through collectors
3 x green
(power on for less than 48 hours)
no green
Power outage or call for service
(remains off)
Flashes Fault Modes
solid red
Hot sensor temperature greater than 130°C
(remains on)
red Temperature rise across collector greater than 40°C
rapid pulse (circulator at full speed)
3 x red Hot sensor in collector – short circuit
4 x red Hot sensor in collector – open circuit
5 x red Cold sensor –short circuit
6 x red Cold sensor – open circuit
If the power supply to the solar control unit is on and the green LED is off or the red LED is flashing, this
indicates there may be a fault with the water heater. The red LED may emit up to six flashes in each series
of flashes.
Note: During periods of high solar radiation and if the circulator activates after having been off, such as
during start up, it is possible the red LED may emit a rapid pulse for a period of up to ten (10) minutes. This
does not indicate a fault. Refer to
and red LED flashing sequence during start up procedure.
If the red LED continues to emit a rapid pulse for longer than ten (10) minutes, or emits a series of flashes,
then count the number of flashes and phone Rheem Service or their nearest Accredited Service Agent to
arrange for an inspection.
"To Fill And Turn On The Water Heater"
43
COMMISSIONING
on page 41 for the possible green