Immergas EOLO Mini - Page 43

41
STEMkW Special ed 01/08 EOLO Mini kW Special
Technical Documentation
Technical Documentation
b
By connecting a micro-manometer at the relevant pressure points in the upper part of the sealed chamber (see ue circuit chapter), it is possible to
measure the pressure present at the ends of the ue pressure switch.
At least 52 Pa are present at the ends of the pressure switch.
No
Check/restore the following conditions:
- maximum lengths and any obstructions of the ue extraction system;
- the integrity and cleanliness of the silicone pipes for the connection
between pressure switch and fan;
- correct fan functioning (visual check).
Yes
e wiring between the ue pressure switch and the board is OK.
No
Restore the electric connection/replace the wiring.
Yes
Replace the ue pressure switch. If the anomaly should persist, replace the P.C.B..
Electro-mechanical contacts block
LEDs 2 and 7 ash simultaneously
e overheating safety thermostat and the fumes pressure switch function
regularly.
No
Check wiring and cleanliness of the electric connection, continuity of the
thermostat and pressure switch contacts and replace them if necessary.
Yes
Replace the P.C.B.
NTC ow probe anomaly
LED n°5 ashing
e wiring between the ow probe and the board (connector X4 terminals
6-7) is OK.
No
Restore the electric connection/replace the wiring.
Yes
Replace the NTC ow probe. If the anomaly should persist, replace the P.C.B.
Parasite ame block
LEDs n°1 and 7 ash simultaneously
e detection electrode and relative wiring are integral.
No
Check/replace the detection electrode.
Yes
Replace the P.C.B.
Insucient circulation
LED n°4 ashing
e circulation pump functions correctly.
N.B.: make sure that the pump operates at maximum speed.
No
See section B
Yes
Any heating system zone valves or interception valves are open.
No
Restore the circulation in the heating system by acting on closed devices
and also check:
- the correct functioning of the boiler by-pass;
- zone valve opening times (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 at 25°C).
No
Replace the NTC probe.
Yes
Check/clean/replace the main exchanger. If the anomaly should persist, replace the P.C.B.
O-line remote control anomaly
LEDs n°2 and 3 ash alternately
e Remote Control is connected correctly.
N.B.: only remote controls supplied by Immergas (CAR or CRD) can be
used.
No
Check the connection between the remote control and P.C.B. (clamps
40-41 for CRD and 42-43 for CAR).
e connection of the CAR must be performed respecting polarity (IN+
and IN-) and using a dedicated line in order to prevent interference;
Yes
Replace the remote control If the anomaly should persist, replace the P.C.B.