Con Guration Error; Parasite Ame Block; Push Button Control Panel Anomaly; Insu Cient Circulation - Immergas MAIOR EOLO 4 E Series Technical Documentation Manual

Technical Documentation
ERROR 15
e P.C.B. is con gured for instantaneous sealed chamber boilers. No
15
Replace the P.C.B.
ERROR 20
e detection electrode and the relative wiring are integral.
20
Replace the P.C.B.
ERROR 24
e buttons on the control panel function regularly (check that a
"click" is heard when the button is pressed).
24
Replace the P.C.B.
ERROR 27
e boiler pump functions correctly.
N.B.: make sure that the pump functions at maximum speed.
Any CH system zone valve or cut-o cocks are open.
27
e NTC ow probe is OK (10 kΩ at 25°C).
Check/clean/replace the main heat exchanger. If the anomaly persists, replace the P.C.B.
ERROR 31
e Remote Control is connected correctly.
N.B.: only remote controls supplied by Immergas can be used (CAR
V2 o CAR Universal).
31
Replace the remote control. If the anomaly persists, replace the P.C.B.
STMaE4E and 07/11
Yes
Yes
Yes
Yes
Yes
Yes
Yes

Con guration error

N.B.: is P.C.B. can be used for instantaneous sealed chamber / open chamber
boilers or with a storage tank. e board automatically recognises the type of boiler
by means of the relative wiring of the P.C.B.
For MAIOR EOLO type boilers, check the following connections.
- ue pressure switch wiring.

Parasite ame block

Check/replace detection electrode/replace wiring.
No

Push button control panel anomaly

No Check that there are no keys blocked or jammed under the control panel.

Insu cient circulation

No See section B
Restore circulation in the CH system by acting on the closed devices
and also check:
- the correct positioning/functioning of the boiler by-pass;
No
- the opening times of any zone valves (when necessary, it is possible
to delay ignition of the burner by acting on the boiler "t2" parameter);
- the correct functioning of any thermostatic valves.
No Replace NTC probe.

Loss of remote control communication

Check the connection between P.C.B. (clamps 41-44) and remote control
No (IN+ and IN-) carried out respecting the polarity and using a dedicated
line to prevent interference.
47
Technical Documentation
MAIOR EOLO 4 E