# PowerOptimal Elon® 100 Quick Reference User Guide v2.08

<table id="bkmrk-solar-pv-water-heate"><tr><td><a id="bkmrk-"></a>**![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-shwhkwz5.png)**

**Solar PV Water Heater Quick Reference Guide**

</td><td>**Dial Setting**

</td><td>**Time on Mains\***

</td><td>**Time on Solar\***

</td><td>**24-Hour Clock**

</td></tr><tr><td></td><td>**MAINS ONLY**

</td><td>24 hr

</td><td>Never

</td><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-wd4nkzxk.png)

</td></tr><tr><td>**![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-sljsxazi.png)**

**Dial**

**Lights**

</td><td>**1**

</td><td>12:00

to

08:00

</td><td>08:00

to

12:00

</td><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-jlvx4ghm.png)

</td></tr><tr><td></td><td>**2**

</td><td>14:30

to

05:30

</td><td>05:30

to

14:30

</td><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-oo6uxrwg.png)

</td></tr><tr><td></td><td>**3**

</td><td>17:00

to

03:00

</td><td>03:00

to

17:00

</td><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-xkqin7io.png)

</td></tr><tr><td>\* Times are approximate – will vary slightly with season and location

</td><td>**SOLAR ONLY**

</td><td>Never

</td><td>24 hr

</td><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-3zxkkoai.png)

</td></tr></table>

**![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-to4mcomc.png)**

&lt; Attach Elon Serial Number

Label Here &gt;

**Mains &amp; Solar Indicator Lights**

**Note 1:** Initial switch-on wait time for solar is **1 min** and for mains is **5 min**.

**Note 2:** Turning dial into “Mains Only” and back out will start mains heating cycle until geyser is on temp.

<table id="bkmrk-%C2%A0lightsmeaning%E2%8F%BA%E2%8F%BAgree"><tr><td></td><td>**Lights**

</td><td>**Meaning**

</td></tr><tr><td>⏺⏺

</td><td>**Green** light **ON**

</td><td>**Geyser on temperature**

</td></tr><tr><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-lupzeolg.png)⏺⏺

</td><td>**Green** light **flashing**

</td><td>Heating with solar

</td></tr><tr><td>⏺⏺

</td><td>**Red** light **ON**

</td><td>Mains power available (power to Elon® unit on)

</td></tr><tr><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-oplw1ykf.png)⏺⏺

</td><td>**Red** light **flashing**

</td><td>Heating with mains

</td></tr><tr><td>⏺⏺

</td><td>**Both** lights **ON**

</td><td>Geyser is on temperature. Mains power available (mains power to Elon® unit on)

</td></tr><tr><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-ebqghesj.png)⏺⏺

</td><td>**Red** light **ON** &amp; **Green** light **flashing**

</td><td>Heating with solar. Mains power available (mains power to Elon® unit on)

</td></tr><tr><td>![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-nybyn7lc.png)![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-khfa65ha.png)⏺⏺

</td><td>**Red** &amp; **Green** light **flashing fast**

</td><td>Isolation fault (contact electrician)

</td></tr><tr><td>⏺⏺

</td><td>Both lights **OFF**

</td><td>No power to unit (for example: no sun plus a power failure, or no sun plus geyser breaker at DB board is switched off) OR supply voltage outside specifications

</td></tr></table>

![](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-0fmwzrs0.png)![Image result for play button orange](http://docs.poweroptimal.com/uploads/images/gallery/2026-06/embedded-image-8mq3oaq0.png)

[**www.poweroptimal.com/elon100**](https://www.poweroptimal.com/elon100)

**Online user instruction video:**

[**www.poweroptimal.com/manuals**](http://www.poweroptimal.com/manuals)

**Full user manual:**

**V 2.08**

**2021/04/26**