Rheem GAS BOOSTED SOLAR WATER HEATER - Manual (Page 47)

COMMISSIONING
47
DIAGNOSTIC FEATURES OF THE SOLAR CONTROLLER
The solar storage tank incorporates an electronic solar control module. This is located inside of the
lower front cover and houses both a green and a red LED. The LEDs emit either a constant glow or a
series of flashes with a 2 second interval between flashes. The green LED indicates the current
operational mode of the solar water heater and the red LED indicates a fault mode. To view the status
of the LEDs, it is necessary to remove the lower front cover.
Warning: The removal of the lower front cover will expose 240 V wiring. It must only be removed by
an authorised or service person.
The modes are:
Flashes Operational Modes
Solid green
(remains on)
Standby mode
1 x green Flooding solar circuit
2 x green Checking solar contribution
3 x green Pump flow control
4 x green Pump flow established
5 x green Tank at maximum temperature
Flashes Fault Modes
1 x red Hot sensor in collector – open circuit
2 x red Hot sensor in collector – short circuit
3 x red Cold sensor – open or short circuit
4 x red Top three tank thermistors – open or short circuit