64
STHCkW ed 0409
HERCULES Condensing Export
Technical Documentation
Technical Documentation
ERROR 01
No ignition block
01
a
The cables between igniter and electrodes corresponds.
No
Restore the electric connection/replace the wiring.
Yes
The igniter makes the spark.
No
Replace the igniter. If the anomaly persists, replace the P.C.B.
01
b
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).
No
Replace the P.C.B.
Yes
The wiring between the gas valve and P.C.B. is OK.
No
Restore the electric connection/replace the wiring.
Yes
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.
01
c
The electrode detects a direct current of 2-4 µA during the burner
ignition phase.
No
Replace the detection electrode and/or relative wiring.
Check correct position and distance between electrode and burner.
Check that siphon and the condensate exhaust duct are not blocked.
Yes
There are no combustion products in the air intake pipe.
N.B.: check the absence of CO
2
or other combustion products in the
intake pipe.
No
Check the correct positioning of the terminals, of all joints and
gaskets, to prevent the recirculation of the combustion products inside
the pipes.
N.B.: check the presence of Error 38 inside the "M1 / P19" menu.
Yes
Replace the P.C.B.
ERROR 02
Over-heating safety thermostat block
02
a
The 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 persists, replace the P.C.B.
02
b
The safety thermostat functions regularly (intervention temperature
higher than 100°C).
No
Replace the over-heating safety thermostat.
Yes
The boiler pump functions correctly.
No
See section B
Yes
Any CH system zone valve or cut-off cocks are open.
No
Restore circulation in the CH system by acting on the closed devices
and also check:
- the correct functioning of the boiler by-pass;
- 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.
Yes
The NTC flow probe is OK (10 kΩ at 25°C).
No
Replace NTC probe.
Yes
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
Flue safety thermostat block
03
a
The wiring between the flue safety thermostat and P.C.B. is OK.
No
Restore the electric connection/replace the wiring.
Yes
Check/replace the flue safety thermostat. If the anomaly persists, replace the P.C.B.
Error codes.
Summary of Contents for Hercules Condensing 26 2 E
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