Appendix
38
Installation instructions aroTHERM 0020147164_07
VWL 55/2 A
230 V
VWL 85/2 A
230 V
VWL 115/2 A
230 V
VWL 155/2 A
230 V
Power consumption ef-
fective at A7/W35
1.10 kW
1.80 kW
2.50 kW
3.40 kW
Input current at A7/W35
4.80 A
7.80 A
10.90 A
14.80 A
A7/W45 heating output
4.40 kW
7.80 kW
10.20 kW
13.40 kW
A7/W45 output figure/EN
14511 coefficient of per-
formance
3.40
3.80
3.40
3.40
Power consumption ef-
fective at A7/W45
1.30 kW
2.10 kW
3.00 kW
4.10 kW
Input current at A7/W45
5.70 A
9.10 A
13.00 A
17.80 A
A7/W55 heating output
4.20 kW
7.00 kW
9.80 kW
11.20 kW
A7/W55 output figure/EN
14511 coefficient of per-
formance
2.70
3.00
2.90
2.30
Power consumption ef-
fective at A7/W55
1.60 kW
2.40 kW
3.50 kW
5.00 kW
Input current at A7/W55
7.00 A
10.40 A
15.20 A
21.70 A
E
Overview of fault codes
Code
Meaning
Cause
F.022
Water pressure too low
Insufficient water in the heating system
F.037
Fan fault
–
Obstruction in the product's air guiding
–
Fan motor not connected or faulty
–
The connection between the main PCB and the fan PCB is dam-
aged or broken.
F.042
Fault: Coding resistance
–
The product's coding resistance is missing or is faulty
–
Coding resistance value outside the permissible range
–
X25 plug not connected or was connected incorrectly
F.073
Fault: Water pressure sensor
Line to water pressure sensor is broken or has a short circuit
F.086
Contact thermostat has opened.
–
Underfloor heating temperature too high
–
Heating circuit flow rate too low
–
Underfloor heating circuit is closed
F.103
Fault: Spare part detection
–
The "Max. duration power supply cut-off" parameter has been
set poorly (see the "Heat pump setting parameters" section in
the appendix).
–
The main PCB that is fitted as a spare part or the inverter does
not match the product
F.514
Temp. sensor fault: Compressor inlet
–
Sensor is faulty or incorrectly connected to the main PCB
F.517
Temp. sensor fault: Compressor outlet
F.519
Sensor fault: Return temperature
F.520
Sensor fault: Flow temperature
F.523
Sensor fault: VF1
Line to VF1 temperature sensor is broken or has a short circuit.
F.526
Sensor fault: Temp. environment circuit EEV
1)
Sensor is faulty or incorrectly connected to the main PCB
1) Sensor on the evaporator
2) Sensor on the condenser
