Ariston microGENUS 27 MFFI Instrukcje serwisowe - Strona 22
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D
IS
THERE STILL
A PROBLEM?
NO
NORMAL
OPERATION
22
1
Drawing D.H.W:
YES
When you turn on a tap
burner switches off
2
Drawing D.H.W:
radiators heat up in summer mode
3
Drawing D.H.W:
insufficient hot water
temperature
4
Drawing D.H.W:
noisy operation
5
Decrease/increase
heating circuit pressure
6
Repeated shutdowns
7
Repeated intervention of safety thermostat
8
When cold water tap turned off, the boiler
ignites
9
Insufficient radiator temperature
FAULTS
- 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
- check gas pressures
- check water flow rate
- 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
- 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
POSSIBILE CAUSES
FC004Ae
B063