Unit installation

13
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”, may indicate
a potential fault mode.
The green LED will emit either a constant glow, a constant pulsing or a series of
flashes, with a 2 second interval between each series.
The red LED will emit either a constant glow, a constant pulsing or a series of
flashes with a 2 second interval between each series. A constant glow or pulsing
does not necessarily mean there is a fault with the system. A series of flashes
indicates there may be a particular fault condition with the system.
DIAGNOSTIC FEATURES OF THE SOLAR CONTROLLER
The operational modes are:
Flashes
Operational Modes
Flashes
Indicator or Fault Modes
solid green
(remains on)
Standby mode
Solid red
(remains on)
Hot sensor temperature
greater than 130°C
green
slow pulse
Standby mode
(power on for less than
48 hours)
red
rapid pulse
Temperature rise across
collector greater than 45°C
(circulator at full speed)
green
rapid pulse
Circulating water through
collectors
3 x red
Hot sensor in collector –
short circuit
3 x green
Circulating water through
collectors
(power on for less than
48 hours)
4 x red
Hot sensor in collector –
open circuit
no green
(remains off)
Power outage or call for
service
5 x red
Cold sensor –short circuit
6 x red
Cold sensor – open circuit