Lockouts - elco R3400 Notice D'installation Et D'emploi

Lockouts

In case of a lockout, a warning triangle (E) and a flashing error code appears on the display. The cause of a fault should first
be determined and eliminated before the boiler is being reset. In case the lockout appears more than twice within 6 minutes or
maintains for longer than 6 minutes, the error code is added with a "
indication of possible cause.
No. Error type Explanation
1 Lockout Water flow temperature has exceeded the high
limit temperature setting (100ºC).
2 Interlock Gas pressure has dropped below minimum value
of minimum gas pressure switch or additional
safety device connected to the interlock input has
been interrupted (during startup).
3 Interlock Gas pressure has dropped below minimum value
of minimum gas pressure switch or additional
safety device connected to the interlock input has
been interrupted (during operation).
4 Lockout No flame ionisation signal detected during burner
start.
5 Lockout Flame ionisation signal lost during operation.
6 Interlock Water flow temperature has exceeded the tem-
perature limiter setting (97ºC).
7 Lockout External safety device connected to the lockout
input has been interrupted.
11 Lockout Flame ionisation signal detected before burner
start.
12 Interlock Water flow temperature sensor is defective.
14 Interlock DHW temperature sensor (optional) is defective.
15 Interlock Outside temperature sensor (optional) is defecti-
ve.
18 Interlock Header temperature sensor (optional) is defecti-
ve.
34
3
". The table below shows all possible lockouts and an
Possible solution
Check if boiler is in automatic mode (K), Check if water
flow through the boiler is sufficient, check if (P11+P12)
< High limit setting (V9).
Check gas supply pressure / check function of additio-
nal safety device on interlock input.
Check gas supply pressure / check function of additio-
nal safety device on interlock input.
Check phase/neutral of power supply (phase sensitivi-
ty!), check gas supply, check ignition spark, increase
gas valve setting min. load (alan key screw).
Check gas supply pressure during operation, check
gas valve setting via combustion analysis.
Check if boiler is in automatic mode (F), check if water
flow through the boiler is sufficient, check if (P11+P12)
< Temp. limiter setting (V10).
Check the external safety devices (water pressure
switches, safety thermostat, etc.)
Check ionisation electrode, measure ionisation current
when boiler is off, check wiring between ionisation
electrode and boiler controller.
Check resistance of sensor (see chapter "sensor
values"), check wiring between water flow temperature
sensor and boiler controller.
Check resistance of sensor (see chapter "sensor
values"), check wiring between DHW temperature
sensor and boiler controller.
Check resistance of sensor (see chapter "sensor
values"), check wiring between outside temperature
sensor and boiler controller.
Check resistance of sensor (see chapter "sensor
values"), check wiring between header temperature
sensor and boiler controller.