Table of Contents
Advertisement
Error Diagnosis / Error messages
no.. Display
Error low pressure.
701
Please call fitter
Low pressure stop
702
RESET autom.
Antifreeze
703
Please call fitter
Error hot gas
704
Reset in hh:mm
Motor protection VEN
705
Please call fitter
Motor protection BCP
706
Please call fitter
Coding of HP
707
Please call fitter
Return sensor
708
Please call fitter
Flow sensor
709
Please call fitter
Hot gas sensor
710
Please call fitter
External temp. sensor
711
Please call fitter
Domestic hot water sensor.
712
Please call fitter
HS-on sensor
713
Please call fitter
Hot gas SW
714
Reset in hh:mm
High-pressure switch-off
715
RESET autom.
High-pressure fault
716
Please call fitter
Flow HS
717
Please call fitter
Max. outside temp.
718
RESET autom. in hh:mm
Min. outside temp.
719
RESET autom. in hh:mm
HS temperature
720
RESET autom. in hh:mm
Low-pressure switch-off
721
RESET autom.
72
Description
Low pressure pressostat in the cooling circle has
responded (LW) or for longer than 20 seconds
(SW).
Only possible for L/W devices: Low pressure in the
cooling circle has responded. After some time, au-
tomated HP restart
Only possible for L/W devices: If the heat pump is
running and the temperature in flow is < 5 °C, anti-
freeze is detected
Maximum temperature in the hot gas cooling circle
exceeded. Automatic HP restart after hh:mm
Motor protection has responded
Option only possible for S/W- or W/W devices
Motor protection of the brine or well water circu-
lating pump or the compressor has responded
Break or short-circuit of the coding bridge in HP
after the first switch-on
Break or short-circuit in the return sensor
Break or short-circuit in the flow sensor No fault
shutdown for S/W- or W/W devices
Break or short-circuit in the hot gas sensor of the
cooling circle
Break or short-circuit in the external temperature
sensor No fault shutdown. Fixed value to -5 °C
Break or short-circuit in the domestic hot water
sensor No fault shutdown.
Break or short-circuit in the heat source sensor
(inlet)
Check thermal application limit of the HP. Domestic
hot water off for hh:mm
High pressure in the cooling circle has responded.
After some time, automated HP restart
High pressure pressostat in the cooling circle has
responded several times.
Flow switch for W/W devices has responded during
the pre-rinsing time or operation
Only possible for L/W devices: Outside tempera-
ture has exceeded permissible maximum value.
Automatic HP restart after hh:mm
Only possible for L/W devices: Outside temper-
ature has fallen below the permissible minimum
value. Automatic HP restart after hh:mm
Option only possible for S/W- or W/W devices Tem-
perature at evaporation outlet has fallen below the
safety value on the HS side several times. Auto-
matic HP restart after hh:mm
Low pressure pressostat in the cooling circle has
responded. After some time, automated HP restart
(SW and SW)
remedy
Check HP for leakage, switching
point pressure state, defrosting and
T-outd.min.
Check HP for leakage, switching
point pressure state, defrosting and
T-outd.min.
Check HP power, defrost valve and
heating system.
Check coolant quantity, evaporation,
overheating flow, return and HS-min.
Check set value and ventilator / BCP.
Check set values, compressor, BOS.
Coding resistance in HP, check plug
and connection line.
Check return sensor, plug and con-
nection line.
Check flow sensor, plug and connec-
tion line.
Check hot gas sensor, plug and con-
nection line.
Check external temperature sensor,
plug and connection line.
Check domestic hot water sensor,
plug and connection line.
Check heat source sensor, plug and
connection line.
Check flow of domestic hot water,
heat exchanger, domestic hot water
temperature and circulation pump.
Check flow of HW, overflows, temper-
ature and condensation.
Check flow of HW, overflows, temper-
ature and condensation.
Check flow, switching point for DFS,
filter, air clearance. .
Check outside temperature and set
value.
Check outside temperature and set
value.
Check flow, filter, air clearance, tem-
perature.
Check switching point of the pres-
sostat, flow on HS side.
We reserve the right to make technical changes.
83052300eUK
© ait-deutschland GmbH
Advertisement
Table of Contents
