Ariston EuroCombi Type C A27 MFFI Servicing Instructions - Page 25
Browse online or download pdf Servicing Instructions for Boiler Ariston EuroCombi Type C A27 MFFI. Ariston EuroCombi Type C A27 MFFI 32 pages. Type c boiler
Also for Ariston EuroCombi Type C A27 MFFI: Installation Instructions Manual (28 pages), Installation Instructions Manual (24 pages), Servicing Instructions (32 pages), Servicing Instructions (32 pages)
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2.2
Fault Finding Using the
Total Check System
Boiler Off
1
Auto diagnostic state
2
Spark ignition state
3
Boiler functioning normally
4
Lockout
5
Boiler thermostat satisfied
6
Room thermostat/clock no demand or
selector in summer setting
Pump fed
Main flow switch closed
Air pressure switch N.O.
Flame detected
Water at required temperature
Room thermostat/clock no demand or
selector in summer setting
Auto diagnostics faulty
D.H.W. exchanger efficiency control
Heating circuit efficiency control
Heating temperature control
D.H.W. temperature control
B029
Supplied By www.heating spares.co Tel. 0161 620 6677
Signalling
Malfunction
A
Faulty ventilation system
b
Air pressure switch stuck in N.O. position
C
Faulty reset switch
d
Faulty main circuit flow switch
E
Faulty flame detection
F
Faulty overheat thermostat
G
Faulty exhaust fumes sensor
I
Faulty heating sensor (N.T.C.)
m
Faulty D.H.W. sensor (N.T.C.)
25