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Boiler Heating Code
No Heating
5th
Tripped High Limit
High Limit re-set
Sensor wires monitor the High Limit Switch
Voltage across closed High Limit = 0 volts
Voltage across tripped High Limit = 220 volts
High Limit can only be re-set 3-4 times!
Replace if frequently tripping under normal conditions
Sensor wires
from High limit
connect to CN2
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