8 Troubleshooting – Possible faults
173
F041
Supply temp. HC1
short circuit
•
Short circuit in sensor or in
cable
•
Both sensor connections joi-
ned in a single terminal
•
Have the fault fixed by a qua-
lified electrician
F042
Supply temp. HC2
open circuit
•
Sensor not connected
•
Sensor is faulty
•
Have the fault fixed by a qua-
lified electrician
F043
Supply temp. HC2
short circuit
•
Short circuit in sensor or in
cable
•
Both sensor connections joi-
ned in a single terminal
•
Have the fault fixed by a qua-
lified electrician
F044
Supply temp. HC3
open circuit
•
Sensor not connected
•
Sensor is faulty
•
Have the fault fixed by a qua-
lified electrician
F045
Supply temp. HC3
short circuit
•
Short circuit in sensor or in
cable
•
Both sensor connections joi-
ned in a single terminal
•
Have the fault fixed by a qua-
lified electrician
F046
Indoor
therm.unit HC1
open circuit
•
Sensor not connected
•
Sensor is faulty
•
Have the fault fixed by a qua-
lified electrician
F047
Indoor
therm.unit HC1
short circuit
•
Short circuit in sensor or in
cable
•
Both sensor connections joi-
ned in a single terminal
•
Have the fault fixed by a qua-
lified electrician
F048
to
F061
Open circuit or
short circuit in
temp. sensors or
indoor thermos-
tat units
•
see F046 and F047
•
see F046 and F047
F062
IO-module no.
too high or in
use
•
Module number set too high
in control unit
•
Set module number to “0”
F063
HC module 0
ADC fault
•
Sensor input is faulty
•
Replace control unit
F064
HC module 0
Error 0 signal
•
Heating circuit module is
faulty
•
Replace heating circuit
module
F070
Temp. acc. top
house 1 short
circuit
•
Short circuit in sensor or in
cable
•
Have the fault fixed by a qua-
lified electrician
F071
Temp. acc. top
house 1 open
circuit
•
Sensor not connected
•
Sensor is faulty
•
Have the fault fixed by a qua-
lified electrician
No.
Fault
Cause
Remedy
Table 8/1 - Faults
Summary of Contents for Compact 25
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