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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
No power supply.
The heat pump is switched off. The main screen
shows
.
Block due to repeated alarms.
The main screen shows
Heat pump time schedule activated. The main
screen shows
.
The main screen shows STAND-BY.
Active wait for compressor start-up. The main
screen shows
Active EVU signal. The main screen shows
Active DHW time schedule.
Night-time programming activated. The main screen
shows
.
DHW mode deactivated.
DHW mode deactivated by remote control.
DHW temperature is between the setpoint and the
differential.
High momentary demand.
Incorrect operation program.
HEATING / COOLING mode deactivated.
Outdoor temperature high / lower than the heating
/
active cooling /
temperature.
HEATING / COOLING time schedule activated.
Night-time programming activated. The main screen
shows
.
The compressor is running and reaches the target
outlet temperature.
The heat pump does not receive demands from the
interior terminals.
High demand for instant heating.
Possible cause
red light stays on.
.
xx.
.
passive
cooling cut-off
Remedy
Check the circuit breaker.
Switch the heat pump on.
Deactivate the alarm block.
Adjust or deactivate the time schedule of
the heat pump.
No service demands. Check whether there
are any active demands.
Wait until the time by
xx passes.
Wait until the EVU signal is deactivated.
Adjust or deactivate the DHW time
schedule.
Adjust or deactivate the night-time
program.
Activate the DHW mode.
Deactivate DHW remote control.
Increase the setpoint temperature and/or
reduce
the
start-up
temperature
Wait 15 - 30 minutes and check DHW
temperature again.
Select the appropriate program.
Activate the HEATING / COOLING mode.
Adjust the heating / active cooling /
passive cooling cut-off temperature.
Adjust or deactivate the HEATING /
COOLING time schedule.
Adjust or deactivate the night-time
program.
Adjust the heating / cooling curve and
report the event to the technical service.
Adjust the setpoint temperature of the
interior terminals.
Wait a few hours and then check the
indoor temperature.
47
User manual
Where
External
cabinet
/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
differential
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:
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