C24GA SERIES CONVECTION STEAMERS - TROUBLESHOOTING
TROUBLESHOOTING
SEQUENCE OF OPERATION
STEP | FUNCTION | DESCRIPTION |
1 | Power On | Power Switch is switched to the on position. |
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2 | Fill Stage 1 | Boiler fills with fast fill water valve, (3.7 GPM). |
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3 | Low Level Probe Confirmation | Low Level Probe, (LLCO), is confirmed then power is applied to |
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| burner system, fast fill valve is turned off. |
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4 | Burner Operation | Power is supplied to operating pressure switch. |
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5 | Blower | Blower is turned on by operating pressure switch. |
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6 | Blower Pressure Switch | Blower air pressure switch is closed when fan is up to speed, |
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| (0.35" to 0.4" WC) and supplies 24 VAC to the ignition module. |
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7 | Pilot Ignition | Module turns on spark ignition and supplies power to combination |
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| valve pilot valve, (PV & PV/MV terminals). |
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8 | Flame Sense | Flame sense probe confirms pilot flame. |
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9 | Main Burner | Ignition module supplies power to gas combination control valve, |
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| (MV & PV/MV terminals), burner ignites. |
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10 | Generator Initial Heat Up | Generator heats up. |
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11 | Fill Stage 2 | Generator 190°F thermostat supplies signal to water level control |
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| to continue filling with trickle valve, (0.25 GPM). |
12 | Generator Full | Boiler will fill till high water probe is confirmed. |
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13 | Ready | Operating pressure switch activates ready light and supplies timer |
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| motor power at 3.5 to 4.0 PSI. |
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14 | Full Pressure | Generator burner system is terminated at 3.5 to 4.0 PSI. |
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15 | Low Pressure | Generator burner system will turn on at 2.5 to 3.5 PSI and operate |
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| till generator pressure reaches 3.5 to 4.0 PSI. |
16 | Water Level | Water level is electronically controlled between the upper and |
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| middle probe operating the trickle fill valve, 0.25 GPM. |
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17 | Cooking | Timer is set and door switch is closed power will be supplied to |
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| steam valve, cavity drain valve relay, and cook light. |
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18 | Cold Water Condensate | Thermostat located in drain assembly will supply power to cold |
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| water condensate valve to maintain drain temp below 140°F. |
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19 | End Cook Cycle | Timer supplies power to buzzer, removes power from steam valves, |
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| cook light, & cavity drain valve relay. |
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20 | Power Off | Power Switch is switched to the off position. |
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21 | Power Down | Power is removed from burner and water level controls. |
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22 | Drain | Power is supplied to drain timer, drain valve is powered for |
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| approximately 16 minutes. |
F35425 (February 2006) |
| Page 34 of 40 |
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