HOW YOUR WATER HEATER WORKS
12
LED OPERATION
The water heater has a green and red LED, housed on the front of the
Controller Module on the lower front of the water heater. The LEDs
indicate the operational status of the water heater.
•
Green indicates normal operation
•
Red
indicates a fault
Types of LED Operation
There are five (5) types of illumination the LEDs may provide. These are:
Illumination
Time
LEDs
Off
remains off
green and red LEDs
Solid
remains on
green and red LEDs
Standard flash
1 sec on, 1 sec off
green LED only
Fast blink flash
0.25 sec on, 0.25 sec off
green and red LEDs
Slow blink flash
0.25 sec on, 9.75 sec off
red LED only
Green LED
The green LED generally indicates various stages of normal operation.
Green LED
Operational Status
Off
no illumination
There may be loss of power, or there may be a fault with the water heater.
Solid
Water is either fully heated or no power request has been received.
No heating taking place.
Standard flash
(continuous flashes)
Top or bottom heating unit operating.
Fast blink flash
Simultaneous with red LED fast blink flash:
•
During start-up (<30 seconds)
– not a fault
•
During firmware update (<30 seconds)
– not a fault
•
If observed for more than 10 minutes, application firmware maybe corrupted
– fault
Red LED
The red LED generally indicates a fault with the water heater.
Red LED
Operational Status
Off
(green LED solid or
standard flash)
System okay
– no fault. PLT network connected.
Solid
There is a fault with the water heater.
Fast blink flash
Simultaneous with green LED fast blink flash:
•
During start-up (<30 seconds)
– not a fault
•
During firmware update (<30 seconds)
– not a fault
•
If observed for more than 10 minutes, application firmware maybe corrupted
– fault
Slow blink flash
Energy Management Unit or PLT network not detected
Notes
•
If both LEDs are off, there may be a loss of power to the water heater. If there is power available, there
may be a fault with the water heater. Phone your nearest Solahart Dealer to arrange for an inspection.
•
If the red LED remains on with a solid illumination, there is a problem with the water heater. Phone your
nearest Solahart Dealer to arrange for an inspection.
•
If the red LED is illuminated with a slow blink flash and if an Energy Management Unit is installed, there
may be a problem with the EMU or the water heater. Phone your nearest Solahart Dealer to arrange for
an inspection.
LED interface
green LED
red LED
