Immergas HERCULES Condensing 26 2 E Manual page 66

Technical Documentation
Error codes.
ERROR 01
The cables between igniter and electrodes corresponds.
01
a
The igniter makes the spark.
At least 14 V DC is present on clamps 2-3 of the connector X19.
N.B: measure the voltage within the safety time (8-10 s).
01
The wiring between the gas valve and P.C.B. is OK.
b
Replace the gas valve.
N.B.: before replacing the valve make sure that there is enough gas inlet dynamic pressure and that the minimum and maximum output adjustment
are correctly made.
The electrode detects a direct current of 2-4 µA during the burner
ignition phase.
01
c There are no combustion products in the air intake pipe.
N.B.: check the absence of CO
intake pipe.
Replace the P.C.B.
ERROR 02
The wiring between the safety thermostat and P.C.B. is OK.
02
a
Check/replace the safety thermostat. If the anomaly persists, replace the P.C.B.
The safety thermostat functions regularly (intervention temperature
higher than 100°C).
The boiler pump functions correctly.
02
Any CH system zone valve or cut-off cocks are open.
b
The NTC flow probe is OK (10 kΩ at 25°C).
Check/clean/replace the main heat exchanger (condensation module).
N.B.: it is recommended to check the correct pressure of the inlet gas and check any obstructions of the gas piping upstream from the boiler. Error 02 intervenes
also if the board detects a loss of the flame signal 6 times in 8.5 minutes.
ERROR 03
The wiring between the flue safety thermostat and P.C.B. is OK.
03
a
Check/replace the flue safety thermostat. If the anomaly persists, replace the P.C.B.
STHCkW ed 0409
Yes
Yes
Yes
Yes
or other combustion products in the
2
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No ignition block
Restore the electric connection/replace the wiring.
No
Replace the igniter. If the anomaly persists, replace the P.C.B.
No
Replace the P.C.B.
No
Restore the electric connection/replace the wiring.
No
Replace the detection electrode and/or relative wiring.
Check correct position and distance between electrode and burner.
No
Check that siphon and the condensate exhaust duct are not blocked.
Check the correct positioning of the terminals, of all joints and
gaskets, to prevent the recirculation of the combustion products inside
No
the pipes.
N.B.: check the presence of Error 38 inside the "M1 / P19" menu.
Over-heating safety thermostat block
Restore the electric connection/replace the wiring.
No
Replace the over-heating safety thermostat.
No
See section B
No
Restore circulation in the CH system by acting on the closed devices
and also check:
- the correct functioning of the boiler by-pass;
No
- the opening times of any zone valve (on requirement it is possible to delay
ignition of the burner by acting on the boiler TIMER RT parameter);
- the correct functioning of any thermostatic valves.
Replace NTC probe.
No
Flue safety thermostat block
Restore the electric connection/replace the wiring.
No
64
Technical Documentation
HERCULES Condensing Export