Ariston, a division of the Ariston Thermo Group, boasts a rich history spanning over 90 years. Established by Italian industrial pioneer Aristide Merloni, the brand prides itself on being global leaders in heating comfort and energy efficiency. Nonetheless, like any appliance, Ariston boilers may encounter issues and breakdowns over time. In this blog, we’ll delve into Ariston Boiler Error and Fault Codes to help you troubleshoot and resolve any issues you may encounter
Table of Contents
Ariston, a prominent member of the Ariston Thermo Group, boasts a legacy of over 90 years in the industry. Founded by Italian industrial pioneer Aristide Merloni, the brand has positioned itself as a global leader in heating comfort and energy efficiency. Despite its reputation, like any appliance, Ariston boilers are susceptible to encountering issues and breakdowns over time. In this blog, we’ll delve into Ariston Boiler Error and Fault Codes to aid in troubleshooting and resolving potential issues.
Ariston offers a diverse range of combi, system, and regular boilers to cater to various heating needs. Their combi boilers boast a power output ranging from 24 to 38kW, suitable for both small flats and large houses, depending on the chosen power output. System boilers, on the other hand, feature a power output between 18 and 30kW. Lastly, their regular boilers are available in 24kW models.
The error codes provided in this blog aim to assist you in identifying any problems you may encounter with your Ariston boiler, facilitating easier troubleshooting and potential fixes. However, if the issue is internal or complex, we highly recommend contacting a Gas Safe Engineer for professional assistance and resolution.
What are boiler fault codes?
Boiler fault codes serve as alphanumeric or numeric indicators presented on a boiler’s control panel. They are designed to communicate specific issues or malfunctions within the heating system. These codes play a crucial role in aiding both homeowners and service technicians in promptly identifying and diagnosing problems, thus facilitating efficient troubleshooting and repairs. Each code corresponds to a particular fault or condition, providing users with valuable insight into the nature of the issue without requiring them to open the boiler or delve into intricate technical details.
Read about: Combi boilers common faults
Potterton Boiler Error Codes / Fault Codes
Ariston Boiler Error and Fault Codes
Error Code | Model | Possible Cause |
Central Heating Circuit Issues | ||
101 | All Boilers | Overheat |
102 | E-Combi Evo E-System Evo Clas He Evo (Combi and system) | Pressure sensor error |
103 | All Boilers | Insufficient circulation |
104 | All Boilers | Insufficient circulation |
105 | All Boilers | Insufficient circulation |
106 | All Boilers | Insufficient circulation |
107 | All Boilers | Insufficient circulation |
108 | All Combi Boilers | Insufficient water (request filling) |
109 | Clas net one / Clas one Combi Clas system one | System pressure greater than 3 bar |
110 | All Boilers | Central heating Flow temperature probe circuit open/short circuit |
112 | All Boilers | Central heating Flow temperature probe circuit open/short circuit |
114 | All Boilers | External sensor circuit open/short circuit |
116 | All Combi and System Boilers | Floor thermostat contact open |
118 | All Boilers | Heating delivery probe problem |
1p1 | All Boilers | Insufficient circulation indication |
1p2 | All Boilers | Insufficient circulation indication |
1p3 | All Boilers | Insufficient circulation indication |
1p4 | Clas Net one Combi Clas one Combi Clas System one | Insufficient circulation indication |
Error Code | Model | Possible Cause |
Hot Water Circuit Issues | ||
202 | Clas HE evo Clas he evo system E-combi evo E-system evo | 2 bottom storage temperature probe open/short circuit |
204 | Clas HE evo Clas he evo system E-combi evo E-system evo | Solar collector temperature probe open/short circuit |
205 | E-combi one E-System one Clas Net one Combi Clas one Combi | Domestic hot water in probe open circuit |
207 | Clas HE evo Clas he evo system E-combi evo E-system evo | Solar collector overheating |
208 | Clas HE evo Clas he evo system E-combi evo E-system evo | Collector frost protection temperature |
Error Code | Model | Possible Cause |
Internal Printed Circuit Board (PCB) Issues | ||
301 | All Boilers | EEPROM error |
302 | All Boilers | Communication error |
303 | All Boilers | Main printed circuit board (PCB) error |
304 | All Boilers | Too many resets (> 5) in 15 minutes |
305 | All Boilers | Main printed circuit board (PCB) error |
306 | All Boilers | Main printed circuit board (PCB) error |
307 | All Boilers | Main printed circuit board (PCB) error |
3p9 | E-combi one E-System one Clas Net one Combi Clas one Combi Clas System one | Schedule service |
External Printed Circuit Board (PCB) Issues | ||
407 | Clas HE evo Clas he evo system E-combi evo E-system evo | 7 Room sensor circuit open/short circuit |
Error Code | Model | Possible Cause |
Ignition & Detection Issues | ||
501 | All Boilers | No flame detected |
502 | All Boilers | Flame detected with gas valve closed |
504 | All Boilers | Flame lift |
5p1 | All Boilers | 1st ignition failed |
5p3 | All Boilers | 2nd ignition failed |
5p4 | All Boilers | Flame cut-off |
Error Code | Model | Possible Cause |
Air Inlet / Flue / Gas Outlet Issues | ||
604 | CLAS HE R E-Combi Evo E-System EVO Clas HE evo Combi Clas HE evo System | Insufficient fan speed |
610 | All Boilers | Thermofuse open |
612 | Clas HE Evo Combi Clas He Evo System E-Combi Evo E-system Evo Clas net one combi Clas one combi Clas system one | Fan speed has incorrect measurement |
Error Code | Model | Possible Cause |
Multi-Zone Heating Issues | ||
701 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Zone 2 outgoing sensor defective |
702 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Zone 2 return sensor defective |
703 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Zone 3 outgoing sensor defective |
704 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Zone 3 return sensor defective |
705 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Hydraulic separation sensor defective |
706 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Zone 2 overheating |
707 | E-Combi Evo E-System EVO Clas HE evo combi Clas he evo system | Zone 3 overheating |
In certain situations, replacing your old boiler with a new one may prove to be more cost-effective than repairing it. Some issues can incur high repair costs, making investing in a new boiler a practical choice. Moreover, newer boilers tend to be more energy-efficient, offering potential savings on both energy consumption and utility bills. Therefore, purchasing a new boiler is often considered a wise long-term investment.
For a quote on a new boiler, consider reaching out to Let’s Heat. Our extensive range of products coupled with the expertise of our Gas Safe engineers ensures professional and reliable service. We’re dedicated to helping you find the perfect boiler to suit your home and heating requirements, ensuring optimal comfort and efficiency.
Read about:
Intergas Boiler Error Codes / Fault Codes
Biasi Boiler Error Codes / Fault Codes
Zanussi Boiler Error Codes & Fault Codes
Why choose letsheat?
Punctuality:
At LetsHeat, we prioritize simplicity and quality in our work. Utilizing state-of-the-art management systems, we efficiently schedule jobs, confirm appointments, send reminders, and handle billing. With next-day installations and emergency services available, we’re quick to respond to your call and ensure prompt service.
Customer Care:
Building strong relationships with our customers is our top priority. We take the time to thoroughly understand your heating requirements and strive to minimize disruption to your home while working.
Experienced Staff
: Our extensive experience in the heating industry has enabled us to expand our services nationwide. We’re deeply committed to our work, and our engineers are not only highly skilled but also helpful and informative. From boiler installation, maintenance, and repair to service plans, we cover all aspects. We work with various boiler types,
including heat only, system, and combi boilers, and offer installation of heat pumps and central heating systems. Additionally, we provide comprehensive plumbing services and much more. Choose LetsHeat for reliable, professional heating and plumbing solutions tailored to your needs.
Alpha Boiler Fault Codes / Error Codes List
Regular Boilers and how does it works
Ravenheat Boilers Error Codes / Fault Codes List
FAQs
Why is my Ariston boiler heating not working?
There are various reasons why your Ariston boiler might fail to ignite. These can include:
faulty ignition leads
blocked burner
broken diaphragms or airlocks
problem with the spark generator
low gas pressure
no or little gas supply
debris in the pilot jet
How to fix ignition failure on an Ariston boiler
Before contacting a heating engineer, you first can check the boiler pressure to see whether it isn’t too low or too high. Otherwise, having a Gas Safe engineer take a loot at it is the best course of action.
How to fix an Ariston faulty fan?
First of all, you should never attempt to fix the issue yourself. This is a problem that requires the expertise of a Gas Safe engineer. The heating engineer would first check that the fan is getting the needed power, by looking at the voltmeter. If it is, then it’s very likely that a replacement fan will need to be fitted.
Read more about:
Vokèra Boiler Fault Codes / Error Codes List