174
F072 Temp. acc. bot-
tom house 1
short circuit
• Short circuit in sensor or in
cable
• Have the fault fixed by a qua-
lified electrician
F073 Temp. acc. bot-
tom house 1 open
circuit
• Sensor not connected
• Sensor is faulty
• Have the fault fixed by a qua-
lified electrician
F075 HC module 1
not connected
• No power supply
• Bus cable is incorrectly con-
nected
• Fuse F2 is faulty
• Check power supply and
cable
• Replace fuse F2
F080
to
F093
Open circuit or
short circuit in
temp. sensors or
indoor thermos-
tat units
• see F046 and F047 • see F046 and F047
F103 HC module 1
ADC fault
• Heating circuit module is
faulty
• Replace heating circuit
module
F104 HC module 1
Error 0 signal
• Heating circuit module is
faulty
• Replace heating circuit
module
F110 Temp. acc. top
house 2 short
circuit
• Short circuit in sensor or in
cable
• Have the fault fixed by a qua-
lified electrician
F111 Temp. acc. top
house 2 open
circuit
• Sensor not connected
• Sensor is faulty
• Have the fault fixed by a qua-
lified electrician
F112 Temp. acc. bot-
tom house 2
short circuit
• Short circuit in sensor or in
cable
• Have the fault fixed by a qua-
lified electrician
F113 Temp. acc. bot-
tom house 2 open
circuit
• Sensor not connected
• Sensor is faulty
• Have the fault fixed by a qua-
lified electrician
F131 ADC fault
Boiler cct board
• Circuit board defective • Replace circuit board
F132 Error 0 signal • Circuit board defective • Replace circuit board
F133 RAM fault
Back-up battery
• Back-up battery empty • Replace buffer battery
F140 Transport module
not connected
• Check voltage supply
• Check data cable
• Have the fault fixed by a qua-
lified electrician
No. Fault Cause Remedy
Table 8/1 - Faults
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