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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
System operating normally
LWCO x xxx
Low water in boiler
LOW PRES WATER x x x
Water Pressure too low
LO PRESS GAS x x x
Gas pressure below setting
HIGH PRESS GAS x x x
Gas pressure on manifold too high
HIGH LIMIT x x x
Boiler temp excess high limit
THERMOSTAT OFF x x x
Boiler off on aquastat
FLOW SWITCH x x x
Flow through boiler insufficient
NO PILOT x x x
Pilot light failed to start
BOILER NOT ON-LINE x x x
Communication lost
x = Light On
PUMP light used only when Economaster programmed.
If a boiler should lose communication with the System Controller, BOILER NOT ONLI
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