User manual
47
EN
4.
Troubleshooting
4.1.
Comfort deficiencies
In the event of lack of comfort in any of the services, use the following table to identify the most common problems that users can
solve on their own.
Symptom
Possible cause
Remedy
Where
Th
e
c
o
mp
re
ssor
d
o
e
s no
t star
t u
p
No power supply.
Check the circuit breaker.
External
cabinet
The heat pump is switched off. The main screen
shows
.
Switch the heat pump on.
Block due to repeated alarms.
red light stays on.
The main screen shows .
Deactivate the alarm block.
Heat pump time schedule activated. The main
screen shows .
Adjust or deactivate the time schedule of
the heat pump.
The main screen shows
STAND-BY.
No service demands. Check whether there
are any active demands.
Active wait for compressor start-up. The main
screen shows
xx.
Wait until the time by
xx passes.
Active EVU signal. The main screen shows
.
Wait until the EVU signal is deactivated.
Lo
w DH
W te
mp
e
ratu
re
Active DHW time schedule.
Adjust or deactivate the DHW time
schedule.
Night-time programming activated. The main screen
shows
.
Adjust or deactivate the night-time
program.
DHW mode deactivated.
Activate the DHW mode.
DHW mode deactivated by remote control.
Deactivate DHW remote control.
DHW temperature is between the setpoint and the
differential.
Increase the setpoint temperature and/or
reduce
the
start-up
differential
temperature
High momentary demand.
Wait 15 - 30 minutes and check DHW
temperature again.
In
d
o
o
r r
o
o
m te
mp
e
ratu
re
:
lo
w i
n
H
EA
TIN
G
mo
d
e
h
ig
h
in
C
O
O
LIN
G
mo
d
e
Incorrect operation program.
Select the appropriate program.
HEATING / COOLING mode deactivated.
Activate the HEATING / COOLING mode.
Outdoor temperature high / lower than the heating
/ active cooling / passive cooling cut-off
temperature.
Adjust the heating / active cooling /
passive cooling cut-off temperature.
HEATING / COOLING time schedule activated.
Adjust or deactivate the HEATING /
COOLING time schedule.
Night-time programming activated. The main screen
shows
.
Adjust or deactivate the night-time
program.
The compressor is running and reaches the target
outlet temperature.
Adjust the heating / cooling curve and
report the event to the technical service.
The heat pump does not receive demands from the
interior terminals.
Adjust the setpoint temperature of the
interior terminals.
High demand for instant heating.
Wait a few hours and then check the
indoor temperature.
/8
On/Off
Unit address:
State:
Program:
eset alarms
eset alarms:
Heat pump schedule
Enable:
Day:
MONDAY
opy to:
MONDAY
NO
: 4:
ON
: :
ON
3: :
ON
4: 4:
OFF
Active demands
58
DHW schedule
Enable:
Day:
MONDAY
opy to:
MONDAY
NO
: 4:
ON
45
: :
ON
55
3: :
ON
4
4: 4:
OFF
Night-time
Enable
min
Start:
3:
End:
7:
ompressor:
5%
Air Unit:
4%
3:
5/8
DHW
Enable:
emote control: ON
SetT
48
DTstart:
5
SetT HT:
7
DHW
ealT:
479
3
SetT:
48
DTstart:
5
94
Start comp T:
43
/8
On/Off
Unit address:
State:
Program:
XXXXXX
Enable:
StopT:
4/8
ooling
Enable:
StopT:
Active:
8
Passive:
XXXXXX schedule
Enable:
Day:
MONDAY
opy to:
MONDAY
NO
: 4:
ON
45
: :
ON
55
3: :
ON
4
4: 4:
OFF
Night-time
Enable
min
Start:
3:
End:
7:
ompressor:
5%
Air Unit:
4%
3:
XXXXXX groups
- +
- +
DG:
SG:
SG3:
SG4:
