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| GREEN | RED | AMBER | GREEN | RED |
| Power | Manual | Call | Pump | Low |
System Control | On | Over- | for | On | Water |
Display |
| ride | Heat |
| Cutoff |
OK | x |
| x | x |
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System operating normally |
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LWCO | x |
| x | x | x |
Low water in boiler |
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LOW PRES WATER | x |
| x | x |
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Water Pressure too low |
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LO PRESS GAS | x |
| x | x |
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Gas pressure below setting |
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HIGH PRESS GAS | x |
| x | x |
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Gas pressure on manifold too high |
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HIGH LIMIT | x |
| x | x |
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Boiler temp excess high limit |
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THERMOSTAT OFF | x |
| x | x |
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Boiler off on aquastat |
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FLOW SWITCH | x |
| x | x |
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Flow through boiler insufficient |
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NO PILOT | x |
| x | x |
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Pilot light failed to start |
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BOILER NOT | x |
| x | x |
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Communication lost |
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x = Light On
PUMP light used only when Economaster programmed.
If a boiler should lose communication with the System Controller, BOILER NOT ONLIN
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