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Académie
HVAC
NATE Hydronics Oil Service Specialty
Radiant Heating Service
Vérification des connaissances
Radiant Heating Service
Vérification des connaissances
Vérification des connaissances
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A cad cell reads below 25 ohms when the burner is off and the combustion chamber is dark. What does this indicate?
A
The cad cell has failed in the closed (shorted) position and must be replaced
B
Normal standby condition for a properly functioning cad cell
C
The ignition transformer is energizing prematurely
D
Ambient light is reflecting off the combustion chamber walls
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