Pfannenberg PC2500 WT CE STD Notice Originale page 16

Problem
The compressor works continuously and the chiller can't control the liquid temperature:
- too low temperature of the liquid
- too high temperature of the liquid
Too low temperature Broken thermostat (contact blocked)
Too high temperature Broken thermostat
Not enough Freon in the unit
Too high heat load
Problem
No flow rate in the circuit Pump is down
Not correct flow rate on hydraulic
circuit
70040-122_01-_-(PC2500_Op._Manual_IT-EN-DE-FR-ES-RU).docx
English
Note: after solving the cause of the fault, start the chiller by pressing the reset
button located on the external body of the pressure switch itself (see the
picture)
Compressor
Cause
Replace the thermostat
Replace the thermostat
Please ask for the service by a refrigeration engineer
Possible wrong application, to be checked with our staff
Pump
Cause
Replace the pump
Verify the regulation of hydraulic bypass where installed
Verify circuit pressure drop to reach the nominal flow rate
16
Possible corrective Action
Possible corrective Action