Pfannenberg PWS 6502 T Serie Manuel D'utilisation page 60

GB
6 Troubleshooting
Fault
Unit does not cool,
Fan is running
Unit does not cool
sufficiently
Condensate
accumulates in the
switch cabinet
Condensate does not
drain
Operating manual PWS and PWI 6502 T 785408480 © Pfannenberg GmbH
Possible causes
• Temperature setting too high.
• Operating limits exceeded.
• Heat exchanger dirty.
•
Fan defective.
• Disturbance in the air circulation
inside the cabinet.
• Exhaust temperature is too high.
• Switch cabinet is not sufficiently
sealed.
• Condensate drain is plugged up.
• Switch cabinet is not sufficiently
sealed.
Corrective measures
▪ Check the temperature setting.
▪ Check the ambient temperature and internal
load.
▪ Call in authorized, qualified personnel to
check the unit for leakage.
▪ Clean the heat exchanger.
▪ Call in authorized, qualified personnel;
replace fan.
▪ Check the installation and the path of air
circulating in the switchgear cabinet.
▪ Check the supply and outlet flow of air from
the air/ water heat exchanger into the inlet
and outlet openings of the switch cabinet.
▪ Close the cabinet door.
▪ Correct leaky points or seals on the switch
cabinet.
▪ Check the temperature setting.
▪ Clean the condensate drain.
▪ Check whether the condensate drain hose
is free from kinks and is installed with a
downward slope.
▪ Correct leaky points or seals on the switch
cabinet.
Page 29 / 31