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MODEL C24EA - CONTROL BOARD
F35453 (July 2008)Page 39 of 68
Water Level at LLCO Probe
• LLCO LED is on (water level control) (LED is on until water drops below LLCO probe).
• All contactors energized (steam generator begins heating).
• Water fill of the steam generator changes to slow fill rate.
LED
STATUS
COMPONENT DESCRIPTION
ON OFF
1 X Same as Starting Conditions
2X
Limiting contactor (1CON) energized. Water level is satisfied (LLCO probe).
Limiting contactor (1CON) will remain
energized with the water level satisfied.
3X
Regulating contactor 1 (2CON) energized. Pressure switch (1PAS) closed; Heating
elements powered.
4X
Regulating contactor 2 (3CON) energized. Pressure switch (1PAS) closed; Heating
elements powered.
12 X Same as Starting Conditions
13 X Same as Delime Switch On
14 X Same as Delime Switch On
15 X Same as Delime Switch On
17 X Same as Delime Switch On
All other LED's are off.
Water Level at Low level (L) Probe
• Water level control no changes.
• Control Board no changes.
Water Level at High Level (H) Probe
• HL LED off (water level control).
• Water fill of steam generator ends (slow fill valve de-energized).
LED
STATUS
COMPONENT DESCRIPTION
ON OFF
1 X Same as Starting Conditions
2 X Same as Water Level at LLCO Probe
3 X Same as Water Level at LLCO Probe Heating elements remain powered.
4 X Same as Water Level at LLCO Probe Heating elements remain powered.
12 X
Vacuum relief solenoid (2SOL) de-
energized.
Pressure switch opens (2PAS). Allows
steam generator to fully pressurize.
13 X Same as Delime Switch On
14 X Same as Delime Switch On
15 X Same as Delime Switch On
17 X Same as Delime Switch On
All other LED's are off.