Ariston 47-116-15 installation instructions Yes

D

IS		1	FAULTS
THERE STILL	YES		Drawing D.H.W:
A PROBLEM?			When you turn on a tap
			burner switches off
NO		2	Drawing D.H.W:
			radiators heat up in summer mode

3 Drawing D.H.W:

POSSIBILE CAUSES

- air in secondary heat exchanger

- faulty main circuit flow switch

- faulty D.H.W. flow switch

- faulty 3-way valve

- check C.H./D.H.W. temperature probes

NORMAL

insufficient hot water temperature

- check gas pressures

- check water flow rate

OPERATION

4 Drawing D.H.W: noisy operation

5 Decrease/increase heating circuit pressure

- check secondary heat exchanger

- primary heat exchanger faulty or

lime-scale deposits

- low heating system water pressure

- check gas pressures

- check C.H./D.H.W. temperature probes

- check for leaks on the heating circuit

- faulty filling-loop

- faulty secondary heat exchanger

- expansion vessel faulty

6Repeated shutdowns

7Repeated intervention of safety thermostat

8When cold water tap turned off, the boiler ignites

9Insufficient radiator temperature

-faulty detection electrodes

-check gas settings

-check flame detection electric circuit

-C.H./D.H.W. temperature probes open circuit

-overheat thermostat not calibrated correctly

-air in primary water circuit

-drop in pressure in the water mains, with consequent water hammer

-check C.H. temperature probe

-check by-pass

-check gas pressures

FC004Ae

22 B063