PowerOptimal Elon Smart Thermostat User Guide

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Elon® Smart Troubleshooting  

Guide for Electricians ^V1.4  

NOTE: This Troubleshooting Guide is intended for electricians and not general users. Users should please refer  

to the User Manual, which can be found at www.poweroptimal.com/manuals.  

Development  

name  

Elon®  

serial no.  

Unit no.  

Date  

Name: 1^st level  

support person  

Unit construction status  

(Works OR Final Completion)  

Resident name  

Reported issue (customer)  

Reported issue (Level 1  

Support)  

Troubleshooting Steps  

No. Action  

Result Units  

Open the Elon Smart app. (Download the Elon Smart Water app from the Google Play or Apple  

app stores if you don’t have it installed on your phone. Make sure that you have the latest  

version of the app – you can check by searching “Elon Smart Water” in your app store and  

tapping “Update”.)  

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

If you don’t have the specific thermostat in your device list, scan its QR code (on the  

house DB or on the thermostat itself) to add it by tapping the + button in the Elon Smart  

app.  



Open the thermostat Configuration screen by tapping the Configure (hammer &  

spanner) button to the right of the thermostat on the app status screen.  

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Check for any alarms at the bottom of the screen and rectify accordingly (See list of alarms at  

the end of this guide)  

If you cannot access the thermostat from the app, confirm that  

DC closed  

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a. the DC isolator / circuit breaker is closed (on);  

b. the AC circuit breaker at DB and AC isolator are closed (on).  

AC closed  

If you still cannot access the thermostat from the app, remove the geyser end cover and:  

Wiring  

correct  



a. Visually inspect the wiring ensuring that AC and DC wiring are still inserted into screw  

terminals;  

b. Check using a voltage meter that DC voltage is present on the DC screw terminals and  

polarity is not reversed (Figure 1);  

V DC &  

correct  

polarity  

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c. Check using a voltage meter that AC voltage is present on the AC screw terminals (Figure  

2).  

V AC  

Write down the conclusion from your testing (What  

caused the reported issue?) & any other observations:  

Fig 1 Checking DC voltage Fig 2 Checking AC voltage  

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	PowerOptimal Elon Smart Thermostat User Guide
Make	PowerOptimal
Language	English
Filetype	PDF (Download)
File size	0.22 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• PowerOptimal

PowerOptimal Elon Smart Thermostat User Guide Overview

Summary of Contents

• Page 1: Elon Smart Troubleshooting Guide for Electricians This troubleshooting guide is intended for electricians and not general users. Open the Elon Smart app. Ensure you have the latest version of the app. If you don’t have the specific thermostat in your device list, scan its QR code to add it. Check for any alarms at the bottom of the screen and rectify accordingly. Confirm that the DC isolator/circuit breaker is closed. Visually inspect the wiring ensuring that AC and DC wiring are still inserted into screw terminals. Check using a voltage meter that DC voltage is present on the DC screw terminals. Check using a voltage meter that AC voltage is present on the AC screw terminals. Write down the conclusion from your testing regarding the cause of the reported issue.
• Page 2: Elon Smart Troubleshooting Guide for Electricians After power up, the unit runs a self-test that takes about 30 seconds. Once the self-test passes, the unit will engage the correct power source determined by the heating policy. If the two earth wires are not connected to the earth stud, the unit will fail the self-test and never start the heating process. The unit will detect installation faults and display them on the configuration screen, stopping the unit from connecting power to the element until they are cleared. The unit will warn the installer if there is no power on the AC input or no power on the DC input during the daytime. For any heating policy except Grid Only, solar power is normally engaged except for specified periods. If the unit has no grid power and engaging the element causes the DC voltage of the solar panels to drop below the required voltage, the unit disconnects the element. If the unit is connected to the grid, it may draw a small amount of power from the grid even if Solar Only heating policy is selected. To switch on solar power to the element, select Solar Only heating policy on the configuration screen. To switch on mains power to the element, select Grid Only heating policy on the configuration screen. Solar power will be used whenever available, and grid power will only be used to boost water temperature to the Grid set point if the temperature is lower than that during specified times.
• Page 3: Elon Smart Troubleshooting Guide for Electricians The Elon Smart has a helpful alarm system that detects and reports common issues. Always check that you have the latest version of the app by going to the “Elon Smart Water” app in your app store. Alarm message: Element Faulty - Check that the thermostat is inserted correctly. - Measure element resistance and replace if necessary. Alarm message: Switch Failed - Contact technical support. Alarm message: DC Disconnect Failed - Contact technical support. - This can be due to several reasons including no AC power connected. Alarm message: No Power on AC Input - Clear the alarm by switching the AC power on or setting the Elon Smart heating policy to Solar Only. Alarm message: Disconnected for Safety - The Elon Smart will disconnect power from the geyser during a safety-related alarm condition. Alarm message: Water Temperature Measurement Failure - Check the installation and provide shade if necessary. Alarm message: DC Wiring Insulation Failure - Check solar panels and DC wiring for insulation faults. Alarm message: Insulation Self-Test Failed - Check earth wiring and ensure both earth straps are connected securely.
• Page 4: Elon Smart Troubleshooting Guide for Electricians Alarm message and resolution steps are provided. DC wired to AC input can lead to no power on DC input. Possible reasons for no power include lack of DC connection, DC power being off, wiring issues, or insufficient sunlight. The alarm does not prevent the unit from functioning with grid power. Clearing the alarm can be done by switching on DC power, fixing wiring, or setting the heating policy to Grid Only. DC input reversed indicates incorrect wiring on the solar input. The positive and negative wires may need to be swapped. Improper insertion of the Elon Smart into the geyser element can cause issues. Power must be switched off before re-seating the Elon Smart.
• Page 5: Elon Smart Troubleshooting Guide for electricians. Basic troubleshooting guide for users.
• Page 6: Elon Smart Troubleshooting Guide for electricians
• Page 7: Elon Smart Troubleshooting Guide for electricians