Immergas EOLO Mini - Functioning Anomalies

40
STEMkW Special ed 01/08 EOLO Mini kW Special
Technical DocumentationTechnical Documentation
No ignition block
LED n°6 ashing
a
e ignition transformer carries out the discharge.
No
Replace the P.C.B.
Yes
e wiring between the ignition electrodes and P.C.B. is OK
No
Restore/replace the ignition electrodes and relative cables.
b
230 VAC are present on clamps 1-2 of connector X7.
No
Replace the P.C.B.
Yes
e connector and relative wiring between the gas valve and the
P.C.B. are OK.
No
Restore the electric connection/replace the wiring.
Yes
e gas valve main coils are OK.
No
Where possible, replace the gas valve main coils.
Yes
Replace the gas valve.
N.B.: before replacing the valve always check that there is sucient dynamic pressure in gas input and that the adjustment screws of the minimum and
maximum heat output are correctly adjusted.
c
e electrode detects a direct current of 6-8 μA during the burner
ignition phase.
No
Replace detection electrodes and/or relative wiring.
Yes
Replace the P.C.B.
Over-temperature safety thermostat block.
LED n°7 ashing
a
e wiring between the safety thermostat and P.C.B. is OK.
No
Restore the electric connection/replace the wiring.
Yes
Check/replace the safety thermostat. If the anomaly should persist, replace the P.C.B.
b
e pump operates correctly.
N.B.: make sure that the pump operates at maximum speed.
No
See section B
Yes
Any heating system zone valves or intercepting valves are open.
No
Restore circulation in the heating system by acting on the closed devices
and also check:
- the correct functioning of the boiler by-pass;
- the opening times of any zone valves (on requirement it is possible to
delay ignition of the burner by acting on the "delay heating ignition from
TA or CAR requests" parameter of the boiler);
- the correct functioning of any thermostatic valves.
Yes
e NTC ow probe is OK (10 kΩ a 25°C).
No
Replace the NTC probe.
Yes
Check/clean/replace the main exchanger.
Flue pressure switch anomaly
LED n°8 ashing
a
230 VAC are present on clamps 6-7 of the connector X10 on the
P.C.B.
No
Replace the P.C.B.
Yes
230 VAC are present on the fan clamps.
No
Restore the electric connection/replace the wiring.
Yes
Replace the fan.
Functioning anomalies.