48
caldaie
Failure to reach maximum capacity Temperature selected Check position of corresponding
in CH
potentiometer
See section 2.2.5 page 12
Limescale or deposits in
Clean exchanger
exchanger
See the table 4.4.8 page 28 C.A.I. - page 30 C.S.I.
Irregular combustion Check pressure of gas supply and to
burner
See section 2.4 page 13
Check working condition and diameter of nozzles
See section 2.3 page 13
Check working condition of burner
See section 2.3 page 13
Check working condition of gas valve
Best
to install a suitably sized filter on gas
supply
Check modulator resistance
(70-80 OHM)
See section 1.5.17 page 6
Failure to reach minimum capacity Temperature selected Check position of corresponding
in CH
potentiometer
See section 2.2.5 page 12
Irregular combustion Check pressure of gas supply and to
burner
See section 2.4 page 13
Check working condition and diameter of nozzles
See section 2.3 page 13
Check working condition of burner
See section 2.3 page 13
Check working condition of gas valve
Best
to install a suitably sized filter on gas
supply
Check modulator resistance
(70-80 OHM)
See section 1.5.17 page 6
Heating and/or sanitary do not go off/light Carry out WORKING TEST BOILER ON
up HEATING page 65 (CAI) page 66 (CSI) and
WORKING TEST BOILER ON SANITARY
page 67
Smell of gas Leakage from supply system Check system joint sealing
See section 7.2 page 71
Leakage from boiler gas Check gas circuit joint sealing
system See section 2.4 page 13
PROBLEM CAUSE REMEDY
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