Liebert 272014 Air Conditioner User Manual


 
page 11
English
high outside
temperature:
consult
supplier
excessive
refrigerant charge:
reduce charge
dirty
condenser:
clean
it
low outside
temperature:
check
refrigerant charge
low condensing
(temperature)
pressure
faulty
fan PV
pressure switch:
replace
leak of refrigerant:
repair leak and
recharge
locked filter
dryer:
replace it
capillary locked:
replace
reduced
air flow
clogged filters
or locked air
flow: verify
suction pipe
heats up when
compressor stops:
replace compressor
excessive
superheat
high room
temperature:
reduce temp.
leak of refrigerant:
repair leak and
recharge
locked freecooling
damper: unlock
servocontrol
fault: replace
partially
frozen
evaporator
unit is not
cooling
hot compressor
or klixon
intervention
act as
necessary
compressor not
under power:
check electrical
and control circuit
is the compressor
faulty?
act according to
local regulations
faulty room
sensor: replace
faulty compr.
substitute by
expert technician
excess current
absorption:
call expert
technician
noisy compressor:
substitute by
expert techncian
unit is
cooling
unit is not
heating
faulty control
circuit wiring:
check el. circuit
faulty control
function: replace
reduced
air flow
unit in
dehumidification
wait for
temperature to rise
electrical
heaters are off
no power
arriving: check
electrical circuit
and safety T-stat
element burnt
out: replace
and check
electrical circuit
clogged filters
or locked air
flow: verify
faulty room
sensor: replace
partially
frozen
evaporator
compressor
overheating
Yes
No
high ambient
temperature
low ambient
temperature
No No No
Ye s
No
No Yes No
No
No
Ye s
No
No No Yes
Ye s
No
No Yes
Ye s
No
No No No No
Ye s
Ye s Ye s Ye s
Ye s
No No No
Ye s
No
Yes NoNoNoNo
Ye sYe s
Ye s N o
No
No
Ye s
No
No
leak of refrigerant:
repair leak and
recharge
too much
refrigerant:
reduce charge
cold/noisy
compressor
No
Ye s N o
burnt out fan
motor: replace
pressure switch/
t-stat/variex faulty
or capillary
locked: rectify
pressure switch/
t-stat/variex
miscalibrated:
recalibrate
compressor HP
alarms
compressor LP
alarms
user alarms
smoke/fire alarm
(optional)
No No
faulty external
sensor: replace
No
capillary fault:
replace
Ye s