G Status Codes - Vaillant uniTOWER plus Operating Instructions Manual

Setting level
Software version
Installer level → Resets →
Statistics → Reset statistics?
Maintenance messages → Reset
maintenance message
High-pressure switch → Reset
fault?
Factory settings → Restore fact-
ory settings
2)
Screed drying
Installer level → Start inst. assistant →
Language
Syst. control avail.?
Im. heater power supp.
Im. heater outp. range
Cooling technology
Compr. current limit
MO relay
Intermediate heat exchanger
Check program: Purge building
circuit
Contact details Telephone num-
ber
End the installation assistant?
1)
See the overview of fault codes: Fault lists are only available, and can only be deleted, if faults have occurred.
2)
This parameter does not appear if a system control is connected.
3)
This parameter is only available in the products for Spain
G Status codes
Code
Status external current anode
S.34 Heating mode: Frost pro-
tection
S.100 Standby
S.101 Heating: Compressor
shutdown
S.102 Heating: Compressor
blocked
S.103 Heating: Prerun
S.104 Heating: Compressor
active
S.107 Heating: Overrun
0020291525_04 Installation and maintenance instructions
Values Unit
Min. Max.
Current value of the
control PCB (HMU
indoor unit xxxx, HMU
outdoor unit xxxx) and
the display (AI xxxx)
Yes No
230 V 400 V
External 6 kW
No cool- Active
ing cooling
13 25 A
Yes No
Yes No
Phone number
Meaning
Anode not connected, Anode OK, Anode Fault
If the measured outdoor temperature falls below XX °C, the temperature of the heating circuit's flow
and return is monitored. If the temperature difference exceeds the set value, the pump and com-
pressor are started without a heat demand.
There is no heat demand or cooling demand. Standby 0: Outdoor unit. Standby 1: Indoor unit
The heat demand is met, the demand is ended by the system control and the heat deficit is offset.
The compressor is switched off.
The compressor is blocked for heating mode because the heat pump is outside of its application lim-
its.
The start conditions for the compressor in heating mode are checked. Start the other actuators for
heating mode.
The compressor works in order to meet the heat demand.
The heat demand is met, the compressor is switched off. The pump and fan overrun.
Increment, select, ex- Factory setting
planation
xxxx.xx.xx
Yes, No No
Yes, No No
Yes, No No
Yes, No No
Off, 1–29 Off
Languages available for 02 English
selection
Yes, No
1–6: 1 kW–6 kW 6
1
5–7 kW: 13–16 A
12 kW: 20–25 A
None, fault signal, ext. None
immersion heater, DHW
3WV
Yes, No
Yes, No No
0–9 Empty
Yes, back
Setting
53