Ariston NEXT SFT 14 Manuale d'uso - Pagina 36

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Stampa la pagina

1. Control Panel
2. Maintenance
3. Fault Fi Nding Chart

6. maintenance

THERE STILL

A PROBLEM?

NORMAL

OPERATION

FAULTS

Drawing D.H.W.:

insufficient hot water

temperature

Drawing D.H.W.:

noisy operation

Repeated shutdowns

POSSIBLE CAUSES

- check gas pressure

- check water flow rate

- check the temperature sensors

- check heat exchanger

- check exchanger faulty or

lime-scale deposits

- low system water pressure

- check the gas pressures

- faulty detection electrodes

- check gas settings

- check flame detection electric circuit

- check the temperature sensor