C Installer Level - Overview - Vaillant aroSTOR VWL BM 270/5 Installation And Maintenance Instructions Manual

Appendix
Fault code Description
Incorrect defrosting sensor
readings
Heat pump out of gas
ERR. 01
Expansion valve shut down
Compressor shut down and
safety cut-out activated
ERR. 02 Incorrect temperature
sensor readings
ERR. 03 Incorrect temperature
sensor readings
ERR. 04 Incorrect defrosting and hot
water temperature sensor
readings
ERR. 08 Incorrect measurements by
the defrosting sensor
EPrO Display card has a storage
problem
Installer level – Overview
C
Setting level
INST.MENU → PV MODE →
PV MODE
INST.MENU → PV MODE → PRIORITY
PRIORITY
INST.MENU → DI SPLAY →
WATE R
AIR INLET
T_EV APOR
26
Possible cause
Defrosting sensor incor-
rectly installed on the pipe.
Air temperature is meas-
ured
Leak in the cooling circuit
Break in the copper pipe
for the expansion valve fol-
lowing interference or due
to contact with a vibrating
component.
Compressor defective
–
The air temperature
and the water temper-
ature sensors have
been inverted on the
PCB.
–
The defrosting sensor
is connected on the
water connection plug.
The water temperature
sensor is connected to
the air connection plug,
and the air temperature
sensor is connected to
the defrosting connec-
tion plug.
The defrosting sensor is
connected on the water
connection plug. The wa-
ter temperature sensor is
connected to the air con-
nection plug, and the air
temperature sensor is con-
nected to the defrosting
connection plug.
The defrosting sensor and
the water temperature
sensor have been inverted
on the PCB.
The defrosting sensor is
defective.
–
Display card is dam-
aged
–
Display connection
cable is damaged
Values
Unit Increment, select, explanation
Min. Max.
Current value YES, no
Current value YES: PV MODE has higher priority than frost
protection and eco mode; no: PV MODE has
lower priority than frost protection and eco mode
℃
Current value
℃
Current value
℃
Current value
Installation and maintenance instructions aroSTOR 0020290840_00
Solution Temporary operation
Re-establishing contact
between the defrosting
sensor and the pipe
Finding and repairing the
leak before filling the cool-
ing circuit
Heat pump decommis-
sioned.
Replacing the expansion
valve
Replacing the compressor
Connecting sensors to the Product decommissioned.
PCB correctly
Connecting sensors to the Product decommissioned.
PCB correctly
Connecting sensors to the Heat pump decommis-
PCB correctly sioned.
Replace the sensor The product works in al-
ternating operation with the
heat pump.
–
Replacing the display Product decommissioned.
card
–
Replacing the display
connection cable
Factory
setting
no
YES