What can I do if Dualsun SLL regulation display an error code or if the indicator light color changes?

SLL share its status through two ways

LightwheelⓇ

The regulator has a multicolor light led displayed in the center of the LightwheelⓇ . This light indicate the following status:

Color	Fix light	Flashing light
	Everything is ok	Manual mode: at least one of the relays is in mode MAN ON / Min speed / Max speed
		One of the sensor wires is broken / Shortcut of a sensor / flow checking / Overpressure / Pressure drop down
	Holiday mode activated	Temperature gap is too high / Night flow / DEP/RET inverted / Tank has exceeded max temperature
		Manual mode : at least one of the relays is in mode MAN OFF

=> How to fix them :

Fix the relays from “MAN1” to “MAN4” to “AUTO:
exemple for “MAN1”
- When “MAN1” is displayed : push “VALIDATE”
- Scroll fonctioning mode with the wheel until “AUTO” mode and validate.
- Repeat on all the relays
- Push back button twice (on the left of the wheel)
When regulation is properly set, the main button is fix gre and a happy smiley is displayed.

There is a problem coming from a sensor

=> To fix the problem:

Check the sensor conection to the SLL regulation. More information
- Here for a solar water heating system
- Here for a solar water heating system with Unload to pool
Check crimping and the sensor wires
- If the wire is sweezed (especially closed to the crimping) it can make the sensor dysfunctional
Check tension value of the defective sensor
- You can refer to theoretical values.

For exemple: for 20°C, tension value should be between 1077.74 and 1078.34V

If it is not compliant please contact us.

You can have several messages displayed on the monitor. Sometimes complementary to the wheel.

Error code	Text message	Cause
0001	!LINE BREAK SENSOR X!	Sensor line broken
0002	!SHORT CIRCUIT SENSOR X!	Sensor line short-circuited
0011	!ΔT TOO HIGH!	Collector 50 K > than store to be loaded
0021	!NIGHT CIRCULATION!	Betw. 11 p.m. and 5 a.m. col. temp. > 40 °C
0031	!FL/RE INTERCHANGED!	Col. temp. does not rise after switching on
0061	!DATA MEMORY DEFECTIVE!	Storing and changing adjustments not possible
0081	STORE MAX EXCEEDED	St. max has been exceeded

Special case: in case of error 0071 appears, you have to reset time and date in the “DATE” menu.

After the error has been removed and acknowledged, the error message disappears.

Î In order to acknowledge an error message, select the message and press the left button () for 2 s.