26
Installation and maintenance instructions 0020285063_05
Fault code
Description
Possible cause
Solution
Temporary operation
ERR. 01
Incorrect temperature
sensor readings
–
The air temperature
sensor and the defrost-
ing sensor have been
inverted on the PCB
–
The defrosting sensor
and the water temper-
ature sensor have been
inverted on the PCB
–
The defrosting sensor
is connected to the
air connection plug.
The air temperature
sensor is connected to
the water connection
plug and the water
temperature sensor
is connected to the
defrosting connection
plug
Connecting the temper-
ature sensors to the PCB
correctly
Heat pump decommis-
sioned.
Incorrect defrosting sensor
readings
Defrosting sensor incor-
rectly installed on the pipe.
Air temperature is meas-
ured
Re-establishing contact
between the defrosting
sensor and the pipe
Heat pump out of gas
Leak in the cooling circuit
Finding and repairing the
leak before filling the cool-
ing circuit
Expansion valve decom-
missioned
Break in the copper pipe
for the expansion valve fol-
lowing interference or due
to contact with a vibrating
component.
Replacing the expansion
valve
Compressor decommis-
sioned and safety cut-out
activated
Compressor defective
Replacing the compressor
ERR. 02
Incorrect temperature
sensor readings
–
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.
Connecting sensors to the
PCB correctly
Product decommissioned.
ERR. 03
Incorrect temperature
sensor readings
The defrosting sensor is
connected on the water
connection plug. The water
temperature sensor is con-
nected to the air connec-
tion plug, and the air tem-
perature sensor is connec-
ted to the defrosting con-
nection plug.
Connecting sensors to the
PCB correctly
Product decommissioned.
ERR. 04
Incorrect defrosting and hot
water temperature sensor
readings
The defrosting sensor and
the water temperature
sensor have been inverted
on the PCB.
Connecting sensors to the
PCB correctly
Heat pump decommis-
sioned.
ERR. 08
Incorrect measurements by
the defrosting sensor
The defrosting sensor is
defective.
Replace the sensor
The product works in al-
ternating operation with the
heat pump.
EPrO
Display card has a storage
problem
–
Display card is dam-
aged
–
Display connection
cable is damaged
–
Replacing the display
card
–
Replacing the display
connection cable
Product decommissioned.
