Ariston NEXT SFT 14 Manuel de l'utilisateur - Page 36

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6. maintenance
A
IS
THERE STILL
A PROBLEM?
NORMAL
OPERATION
36
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