Gebwell GEMINI 40, Installation, Operation And Maintenance Manual

Page: 44 / 74

44 Gebwell GEMINI
14 FAILURES
In most cases, the controller detects a malfunction of the heating
system and indicates this with a failure notification appearing on
the display. When failure notification displays on the display,
record the alert exactly to the service book to facilitate the
maintenance operations.
14.1 Alerts
When the alert is active, the symbol appears on the heat
pump's display.
More information about the alert can be found on the info page.
Always try first to find out for yourself the malfunction with the
help of the trouble shooting table. If you cannot detect the mal-
function, contact a qualified technician.
14.2 Troubleshooting
If failures are not displayed on the screen, follow the instructions
below.
Basic measures:
1. Check all switches
2. Inspect the house as well as the heat pump fuses
3. Check the fault current circuit breaker
Room temperature too low:
15. Heat pump in incorrect operating mode
16. Set the heat pump heating functions into the right
mode.
17. Thermostats of radiators / floor heating are switched
off
18. Turn on the thermostats in so many rooms as possible
19. Adjust the room temperature on the menu Heating
circuit instead of switching off the thermostats
20. The automatic set point is too low:
21. Raise the Comfort set point on the menu Heating cir-
cuit
o
Increase the heating curve slope set point
on the menu
Heating circuit
o
Set the maximum output water set point
sufficiently high on the menu
Heating cir-
cuit

Program for heating circuit is switched on
o
Go to menu Time program heating circuit
and adjust the time program to wanted level

Air in the heating system
o
Vent the heating system

Valves closed between the accumulator and the heat-
ing circuit
o
Open the valves

External switch for the room temperature drop acti-
vated
o
Check any external switches
Room temperature too high:

Heating circuit setting values are too high
o
If the room temperature is too high only in
cold weather, decrease the heating curve
slope.
o
If the room temperature is too high on
warm weather, decrease comfort set point.
Domestic hot water too cold:

Domestic hot water function is not active
o
Pres the domestic hot water selection but-
ton so that a black bar appears below the
tap.

Domestic hot water consumption is too high
o
Wait until the water has warmed up. Tem-
porarily at beginning of the higher con-
sumption, you can choose the forced charg-
ing of domestic hot water by pressing the
terminal's domestic hot water button for 3
seconds.

Set point too low
o
Go to menu Domestic hot water and in-
crease the set point for domestic hot water

The feed mixing valve adjusted too low
o
Open the valve
The compressor will not start:

No need for heat
o
Check heat pump’s status on the Menu Info

Compressor minimum idle time is active
o
Wait for 20 minutes and check if the com-
pressor will start

Heat pump failure
o
Check Info menu for the reason for the fail-
ure and make the adjustments needed ac-
cording to the trouble shooting table.