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Académie
HVAC
NATE Air Distribution Service Specialty
Zoning Troubleshooting
Vérification des connaissances
Zoning Troubleshooting
Vérification des connaissances
Vérification des connaissances
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An ECM blower motor is delivering acceptable airflow at all supply registers in a zoned system, but its watt draw is 40% above its rated specification. What does this elevated power consumption indicate?
A
The thermostat is requesting additional cooling beyond design capacity
B
The blower motor is nearing end of life and should be replaced
C
The supply registers are oversized, causing excessive airflow
D
The system has a duct restriction that the ECM is compensating for by increasing speed
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