With a rich history spanning back to 1974, Maintracts Services has established itself as a trusted name in the heating industry. Our team of expert heating engineers boasts extensive experience in dealing with Ariston boilers, offering a wide range of services including installation, servicing, and repair. As London boiler installers, we are dedicated to ensuring your heating system runs smoothly.
In today’s blog post, we will be shedding light on a topic that every Ariston boiler owner or technician should be familiar with common Ariston boiler error codes. These error codes can be perplexing, but fear not! We are here to provide you with valuable insights into what these error codes mean and how to effectively troubleshoot them. Whether you’re a homeowner, a landlord, or a heating professional, join us as we unravel the mysteries of Ariston boiler error codes and help you ensure optimal performance and reliability for your heating system.
Ariston error codes
| Fault code | Boiler model | Possible cause |
|
Central heating circuit
|
||
| 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 return 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 |
| D.H.W Circuit | ||
| 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 |
| Internal printed circuit board (PCB) | ||
| 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) | ||
| 407 | Clas HE evo Clas he evo system E-combi evo E-system evo |
7 Room sensor circuit open/short circuit |
| Ignition and Detection | ||
| 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 |
| 5P2 | All boilers | 2nd ignition failed |
| 5P3 | All Boilers | Flame cut-of |
| Air Inlet / Flue gas outlet | ||
| 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 |
| Multi-zone Heating | ||
| 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 |
Understanding Ariston boiler error codes is crucial for effective troubleshooting. If you need further assistance, contact us now for further assistance. Our dedicated team at Maintracts Services is here to help ensure your boiler operates smoothly, providing you with the warmth and comfort you deserve. We also offer emergency boiler repair in London for urgent issues.
Call 020 868 22244
to speak directly to an
experienced professional.
Delivering customer
excellence since 1974.
