The Elon Smart Thermostat uses alarms to notify you of potential issues with your system. Understanding these alarms can help you troubleshoot and know when to contact a professional. Below are the 14 common error codes, what they mean, and how to resolve them as listed in the Elon Smart basic troubleshooting guide.
1. Element Faulty (ID: 0)
What it Means: There is an issue with the geyser’s heating element.
How to Fix:
Contact your installer or plumber to resolve the problem.
2. Switch Failed (ID: 1)
What it Means: The internal switch of the Elon Smart unit has failed.
How to Fix:
Contact technical support.
3. DC Disconnect Failed (ID: 2)
What it Means: The system is unable to disconnect from the DC power supply.
How to Fix:
Contact technical support.
4. No Power on AC Input (ID: 3)
What it Means: There is no AC (grid or municipal) power connected to the Elon Smart system, which could be due to a power outage or the AC disconnect switch or circuit breaker being off.
How to Fix:
Check if the geyser circuit breaker is off at your DB board or if there is a power failure.
You can clear the alarm by switching the AC power on or setting the heating policy to Solar Only until the AC power returns.
You can also just wait until grid power returns.
5. Measurement Failure (ID: 4)
What it Means: The system is unable to measure key parameters like power or temperature.
How to Fix:
Contact technical support.
6. Disconnected for Safety (ID: 5)
What it Means: The system has detected a safety issue and disconnected the power to prevent further damage. This alarm usually appears alongside another alarm and is a safety measure.
How to Fix:
This alarm clears automatically when other safety-related alarms are resolved.
7. Water Temperature Measurement Failure (ID: 6)
What it Means: The system cannot accurately measure the water temperature.
How to Fix:
Contact technical support.
8. Ambient Temperature Exceeded (ID: 7)
What it Means: The temperature around the unit is too high, possibly due to direct sunlight or high ambient temperatures.
How to Fix:
Try providing shade to the geyser, reduce the temperature set point by 5°C, and wait until the temperature cools down.
Contact technical support if the problem persists.
9. DC Wiring Insulation Failure (ID: 8)
What it Means: There is an insulation failure in the wiring from the solar panels.
How to Fix:
Contact your installer/electrician to resolve the issue. You can switch the heating profile to Grid Only or switch off the DC disconnect switch to continue using the system in the meantime.
10. Insulation Self-Test Failed (ID: 9)
What it Means: The system detected a problem with the insulation during its self-test, possibly with the earth wiring.
How to Fix:
Contact your installer/electrician to check the wiring.
11. AC Wired to DC Input (ID: 10)
What it Means: AC (grid) power has been incorrectly wired to the DC input terminals.
How to Fix:
Contact your installer/electrician to correct the wiring.
12. DC Wired to AC Input (ID: 11)
What it Means: DC power from the solar panels has been connected to the AC input terminals.
How to Fix:
Contact your installer/electrician to fix the wiring.
13. No Power on DC Input (ID: 12)
What it Means: The system is not receiving DC power from the solar panels, which could be due to wiring issues or lack of sunlight.
How to Fix:
Ensure the DC disconnect switch is on, or wait until DC power (the sun!) returns.
You can also set the heating policy to Grid Only to ensure hot water whilst waiting for the sun to return.
14. Hot Connection (ID: 14)
What it Means: The Elon Smart unit is not correctly inserted into the geyser’s heating element.
How to Fix:
Contact your installer/electrician to re-seat the Elon Smart unit.
Key Takeaways:
Follow the alarms: Use the Elon Smart app to monitor any alarms and follow the steps provided to resolve them.
Call for help when needed: If an issue requires technical expertise, such as wiring problems or insulation failures, always contact a professional installer or electrician.
This guide provides a simple, user-friendly approach to understanding Elon Smart error codes. For more detailed assistance, always refer to the official Elon Smart support documentation or your installer.