RefrigerationPregunta 73 de 110
High condenser (head) pressure with normal charge is most often caused by what?
a.Overcharged suction line insulation
b.Poor airflow or a dirty condenser coil
c.A shorted thermostat
d.An oversized return grille
Explicación
Restricted condenser airflow, from a dirty coil, failing fan, or blocked clearance, prevents adequate heat rejection and raises head pressure. Non-condensables or overcharge can also raise head pressure. Cleaning the coil and confirming fan operation are first steps.
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