Pfannenberg Rack Serie Libro De Instrucciones página 20

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
English
•
The fan is broken
•
Too high ambient
temperature
Compressor
Cause
Cause
Replace the fan
Check that the chiller is located in a place that can guarantee suitable
ventilation of the refrigerating unit. Check also that the ambient temperature
does not exceed +40°C.
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)
Possible corrective Action
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
Possible corrective Action
Check the right rotation of the electrical motor
20