KONVEKTA KL40T, Operating Instructions Manual

Page: 11 / 16

BAKL40T12AE Edition: 20.04.2009 Page: 11/12
5.4. 5.4. 5.4. 5.4. Troubleshooting Troubleshooting Troubleshooting Troubleshooting
---- Only qualified staff is allowed to carr
Only qualified staff is allowed to carr Only qualified staff is allowed to carr
Only qualified staff is allowed to carry out these works!
y out these works! y out these works!
y out these works! ----
Trouble Trouble Trouble Trouble Cause Cause Cause Cause Repair Repair Repair Repair
only by refrigeration expert only by refrigeration expert only by refrigeration expert only by refrigeration expert
a/c is not running thermostat open
•
check inside temperature
•
re-adjust thermostat
electric connections disconnected
•
check electric connections at switchboard
relay defective
•
check relay,replace if necessary
defrost thermostat has switched
off
•
check evaporator blower,replace if neces-
sary
outside temperature too low
(possible icing of evaporator)
•
switch on "ventilation" only
evaporator coil dirty
•
clean evaporator coil with compressed air
magnetic clutch
•
check connections at magnetic clutch
Blinking code in
display excess pressure (pressure too
high)
•
check axial fans
•
check fuses at switchboard
•
clean condenser coil with compressed air
excess pressure caused by high
outside temperature
•
run unit until pressure has stabilized
leakage in a/c unit, lack of refrig-
erant
•
check a/c unit for leakages, refill refriger-
ant
low pressure, dryer clogged
•
replace dryer
low pressure, screen of expansion
valve clogged
•
clean screen; replace dryer
compressor does not compress
•
check high and low pressure, replace
compressor if necessary
Loud noise at com-
pressor
defective bearing at compressor
•
replace either bearing or entire compres-
sor
slack V-belt
•
check V-belt at compressor drive
See hand book„KONVEKTA KONVEKTA KONVEKTA KONVEKTA Service Stations
By user