BAKL30T12AD
Edition: 28.02.2017
Page: 13/14
6.3. Condenser coil
Reference to
Maintenance Schedule Bus
No.: WP 07 05 06 18
.
The condenser coil fins have to be cleaned with compressed air at least once a year, in case of se-
vere soiling more often
.
Attention
:
Always keep condenser coil fins clean. Severe soiling cause’s excess pressure within the a/c-unit
system and it automatically stops working.
6.4. Troubleshooting
-
Only qualified staff is allowed to
carry out these works! -
Trouble
Cause
Repair
only by refrigeration expert
A/c is not running
magnetic clutch is not switched on
−
check inside temperature, adjust new
if necessary
−
check connections at magnetic clutch
electrical connections disconnected
−
check electric connections at switch-
board
relay defective
−
check relay, replace if necessary
defrost thermostat has switched off
−
check evaporator blower, replace if
necessary
outside temperature too low (possible
icing of evaporator)
−
switch on "ventilation" only
2
evaporator coil dirty
−
clean evaporator coil with compressed
air
compressor does not compress
−
check high and low pressure, replace
compressor if necessary
excess pressure (pressure too high)
−
check axial fans
−
check fuses at switchboard
−
clean condenser coil with compressed
air
excess pressure caused by high out-
side temperature
−
run unit until pressure has stabilized
2
leakage in a/c unit, lack of refrigerant
−
check a/c unit for leakages
−
refill
refrigerant
low pressure, dryer clogged
−
replace dryer
screen of expansion valve clogged
−
clean screen; replace dryer
Loud noise at
compressor
defective bearing at compressor
−
replace either bearing or entire com-
pressor
slack V-belt
−
check V-belt at compressor drive
1
On our website www.konvekta.com in category >service< you will find a survey of contact details of all our
service partners close to your location.
2
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