Dantherm ACT-7 EU, Руководство пользователя

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16
Service Guide : Trouble shooting
Trouble shooting
Symptoms Display Problem Possible cause Action required
No air flow
from room
unit
OFF
Power (230V)
connected but
no function
Power outlet in
wall is off/ dis-
connnected
Turn on electricity and/or check
mains fuse
Defect on electrical
equipment/ cables Call for an electrician.
Insufficient
air flow
from room
unit
Normal
display
Blocked air
ways
Room unit has
blocked air ways
Clean the air filter
(see instruction on page 15)
No cooling
HL HL
Unit is defrost-
ing
Unit is defrosting
in regular intervals
(normal behaviour)
Do not adjust anything. Unit
will return to normal operation
after ten minutes.
HL
Refrigera-
tion system
in danger for
overheat
Indoor tem-
perature too high
(above 35 °C)
Connect a T-split hose and two
outdoor heat exchangers to the
same ACT 7. This will make the
unit operate in higher tempera-
tures.
H
High pressure
state
(NB: Resetting
alarm needed -
see page 14)
Too little water/
glycol fluid in the
system
Top up the ACT-7 room unit
header tank with water/glycol
mixture.
(See instruction on page 7)
External heat
exchanger has
blocked air ways
Clean the fan and the coil with
a vacuum cleaner or water and
a brush.
(see instruction on page 15)
kinked hoses
Check the interconnecting line
for kinking and remove them
External heat
exchanger unit
mounted in very
high ambient tem-
perature
Move external heat exchanger
to a cooler/ shaded place
Leak in the water/
glycol system
Call for a service technician.
L
Low pressure
state
(NB: Resetting
alarm needed -
see page 14)
Room unit has
blocked air ways
Clean the air filter of the room
unit
(see instruction on page 15)
Loss of refrigerant Call for a refrigeration engineer.
HL
Condensate
pump un-
able to reduce
water
Kinked hoses
Check the interconnecting line
for kinking and remove them
The unit has
been unplugged
without beeing in
standby mode for
30 min.
If the symbol has not disap-
peared after 30 min., the water
has to be drained manually.
Call for a service technician.
Call for a service technician, if you can’t solve the problem or the problem reoccurs. Only a
competent electrician should attempt to rectify electrical supply problems. Only a competent
refrigeration engineer should work on the refrigeration system.
Fault finding