The plate heat exchanger transfers heat between refrigerant and water. Impurities or deposits can reduce its efficiency.
Symptoms
High ΔT, reduced flow, high pressure in heating, or difficulty reaching setpoint.
Possible causes
Sludge, oxides, salts, or inadequate cleaning of the hydraulic network.
Diagnosis
Compare temperatures, flow, and pressure drop across the exchanger.
Prevention
A suitable filter, clean water, and proper maintenance reduce the probability of clogging.
