If your Ariston Clas is suffering from similar symptoms and you need it repaired (London area only) you can contact me here. Faults like this one can be hard to diagnose, especially if they are intermittent as any of the following components can be at fault:

In case of this particular boiler all those intermittent faults were caused by a major component failure. Codes from 5XX family point to ignition and flame detection: reset Fig.3 21 20 19 26 25 22 24 23 27 29 28 MATERIAL DE CON S ULTA PROHIBIDA SU REPRODUCCIÓN O MODIFICACIÓN. Chaffoteaux es una marca del grupo Ariston Thermo Group, empresa con más de 90 años de historia que está especializada en la fabricación y comercialización de equipos de calefacción y agua caliente sanitaria.A este grupo también pertenece la marca Ariston. Faults and error messages were intermittent. Sometimes boiler would fire up and show error code 504 after a short while. Resulta que por la maana al intentar arrancar se bloquea y se. Pero llevo dos meses con un montn de problemas. Refer to the Caldera Spa collection of hot tub owner's manuals and instructions for questions you have regarding product functioning and maintenance. Hasta ahora nunca he tenido ningn problema. Usually boiler would try to ignite twice showing message SP1 and then SP2 followed by error code 501. Hola buenas tardes: Tengo desde haces ms de 6 aos una caldera CHAFFOTEAUX&MAURY modelo CELTIC TIG 35 HP CF de 30.000. Resetting the boiler manually would help for few hours. This boiler was playing up for few weeks showing mostly error codes 501 and sometimes 504. If your gas is off you will see SP1 to SP3 error codes. If you have a gas hob test it by turning your hob on. If your Ariston boiler is displaying SP1, SP2 and SP3 error codes please make sure that your gas is turned on at the gas meter or if you are on prepaid meter that you are in credit.

Caldera chaffoteaux reset