ID
Description
Desig. Details
ID7223
Short-circuit - Temp.
probe inlet collector cir-
cuit
S03
Short-circuit - Temp. probe inlet collector circuit
ID7224
Open contact - Temp.
probe return flow col-
lector circuit
S04
Open contact - Temperature probe return flow collector circuit
ID7225
Short-circuit - Temp.
probe return flow col-
lector circuit
S04
Short-circuit - Temperature probe return flow collector circuit
ID7228 Open contact - inlet
temp. probe
S13.2
Open contact - inlet temp. probe
ID7229 Short circuit - inlet
temp. probe
S13.2
Short circuit - inlet temp. probe
ID7231 Anti-freeze protection
(I/O 2)
The anti-freeze protection in the heat pump's heat exchanger
was triggered due to an inlet temperature of less than 5 °C.
After eliminating the cause of the error, the controller must be
restarted to reset the error
ID7236
Open contact - mix.
heating cycle inlet
temp. probe
S12
Open contact - mixed heating cycle inlet temperature probe
ID7237
Short circuit - mix.
heating cycle inlet
temp. probe
S12
Short circuit - mixed heating cycle inlet temperature probe
ID7238
Open contact - mix.
heating cycle return
temp. probe
S11
Open contact - mixed heating cycle return temperature probe
ID7239
Short circuit - mix.
heating cycle return
temp. probe
S11
Short circuit - mixed heating cycle return temperature probe
ID7240 Connection to the KNX
interface
KNX
Connection to the KNX IP interface lost
ID7241 Negative temp. differ-
ential
µ
PC
The temperature difference when the heat generator is active
is implausible.
ID7245 Tunnel occupied
KNX
The tunnel with the physical address (IA of the SMT) set on
the controller is already taken by another KNXnet/IP unit (e.g.:
ETS PC) or is not available on the interface.
ID7246 Low pressure
µ
PC
The compressor is locked due to a low pressure malfunction.
ID7247 Device offline
µ
PC
Device offline - please check the data connection between the
controller board and the inverter.
ID7248 Interface is not sup-
ported
KNX
The KNXnet/IP tunnelling protocol is not supported by the
detected KNX interface.
ID7249 Incorrect interface
detected
KNX
The physical address of the detected KNXnet/IP interface is
not consistent with the parameter settings of the SMT con-
troller.
ID7250 Min. medium flow rate
(I/O 2)
The medium flow rate fell below the heat pump's minimum
medium flow rate due to defrosting or in cooling mode. After
eliminating the cause of the error, the controller must be
restarted to reset the error
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