Rheem GAS BOOSTED SOLAR WATER HEATER

COMMISSIONING

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