When the Roca Novanox 24/24F boiler displays the error E01, it usually means there’s a failure in the ignition process. This is one of the most common faults that can occur with this model, and the good news is that it can often be resolved quickly—sometimes by simply resetting the boiler.
However, if the error persists, it may indicate deeper issues related to gas supply or other components. In this article, we explain what causes the E01 error and how to fix it step-by-step.
What Does the E01 Error Mean on a Roca Novanox 24/24F Boiler?
The E01 code means the boiler has failed to ignite. This typically happens when gas is not reaching the combustion chamber as it should. Common reasons include:
- Air in the gas line
- A defective gas regulator
- A closed or malfunctioning gas inlet valve
When the boiler cannot ignite, it enters a lockout mode as a safety measure. The control panel displays the error code E01, and the unit stops operating until the issue is resolved and the system is reset.
Main Causes and Solutions for E01 Error
Here’s a breakdown of the most frequent causes of the E01 error on the Roca Novanox 24/24F boiler and how to fix them:
| Cause | Solution |
| 1. The boiler has not been used in a while. | Try resetting the unit by holding the reset button for 2 seconds. |
| 2. Air in the gas pipe after long inactivity. | This may require purging the air from the gas line—contact a certified technician to perform this safely. |
| 3. The gas regulator is faulty or incompatible. | Check the regulator for blockages or corrosion; replace it if necessary and verify it suits your gas type. |
| 4. The main gas inlet valve is closed or malfunctioning. | Ensure the valve is fully open. If it’s stuck or damaged, lubricate or replace it. |
Step-by-Step: How to Fix Error E01 on Roca Novanox 24/24F
Step 1: Reset the Boiler
The simplest solution is often the most effective. Locate the Power/Reset button on the front panel and press it for at least 2 seconds. The boiler should attempt to restart. If the error appears again, continue with the next steps.
Step 2: Check for Air in the Gas Line
If the boiler has been off for days or weeks, air may have entered the gas system. This prevents proper ignition. The line must be purged to restore normal operation. This is a task for a licensed technician and should not be attempted by unqualified users.
Step 3: Inspect the Gas Regulator
The gas regulator plays a crucial role in maintaining correct pressure. A worn-out or blocked regulator can stop the gas from flowing properly. Look for visible damage or rust, and replace the part if needed. Always confirm the regulator is designed for your boiler’s fuel type (natural gas or propane).
Step 4: Examine the Main Gas Valve
The gas inlet valve should be fully open. Sometimes it may be partially closed or stuck due to residue or corrosion. Try opening and closing the valve manually. If that doesn’t work, replacing the valve might be necessary.
Other Recommendations
- Preventive Maintenance: Regular servicing ensures your boiler remains in good condition and avoids unexpected shutdowns.
- Professional Support: If you’ve followed all steps and the boiler still doesn’t start, call a technician specialized in Roca boilers.
Frequently Asked Questions – Roca Novanox 24/24F Boiler
🔧 Can I fix the E01 error on my Roca Novanox boiler by myself?
If the issue is due to inactivity or a temporary blockage, a manual reset may be enough. However, for gas-related issues or component replacements, it’s strongly recommended to call a certified technician for safety and compliance.
🔍 Why does the E01 error keep coming back?
If the error reappears after a reset, it’s likely that the root cause hasn’t been addressed. This could be persistent air in the gas line, a damaged regulator, or an issue with the valve. Ignoring it can lead to long-term damage.
🛠️ Do I need to change the gas regulator?
Not always. But if the regulator is corroded, blocked, or incompatible, it should be replaced. Always verify the type of gas (natural or propane) and choose a compatible regulator for your Roca Novanox 24/24F model.
🧯 Is the E01 error dangerous?
The error itself is a safety feature—it prevents ignition when the system detects a fault. It’s not dangerous on its own, but it points to a potential gas flow issue, which can become serious if not resolved properly.
Conclusion
The E01 error on the Roca Novanox 24/24F boiler is often easy to fix with a reset or a quick check of the gas system. But when the problem goes deeper, identifying the exact cause is crucial to avoid recurring faults. Understanding these steps will help homeowners address the issue confidently or know when to seek professional assistance.