SIM Status Indicators
LED 1 LED 2 State
Description, LED status
indication
Rapid flash Power up or
resetting
startup checks and initialization
Off Off Standby
LED 1 Off=flame or sparking
LED 2 = Burner-on call state
Off On Pre-purge or
inter-purge
LED 1 Off=no flame or sparking
LED 2 = Burner-on call state
On On Heating
LED 1 On = Flame detected
LED 2 = Burner-on call state
Rapid flash On Igniting
LED 1 Flashing - Electrode sparking
LED 2 = Burner-on call state
Off Flashing Lockout
Possible errors:
An operating limit was
exceeded
A sequence failed
An external sensor fault was
detected.
Flash alternately
with LED 2
Flash alternately
with LED 1
Fail-safe An error was detected - the boiler
requires a power cycle
Table 12 SIM+ LED status Indicators
8.1.5.2 Resetting a boiler after a LWCO lockout
A boiler in a lockout condition due to a LWCO error will need to be reset.
1.
Go to > Clear Errors > Yes.
2. Check that there is enough water in the system and that the boiler is pressurized.
3.
To reset the boiler, go to > SIM Menu> LWCO Test > Reset > Yes.
4. Run the boiler to ensure that the error has been cleared.
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