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6 720 643 256 (2010/05)
90 | Troubleshooting US/CA
Fault 24
System configuration: incompatible bus
device
119 See display text in the remote control
Fault 28
Remote control is installed in boiler
155 Remote control installed in
boiler.
Mount remote control in living
area.
Fault 29
Unable to save parameter settings
202 BUS device is configured but
not available at present.
Check system structure, check
system configuration, adjust as
necessary and reset
parameters on remote control.
Fault 30
Mixer temperature sensor defective
7 Mixer temperature sensor
(MF) connected to IPM
defective.
Check mixer temperature
sensor (MF) and replace if
necessary.
Fault 31
External heating supply temperature sensor
defective
6 Common temperature sensor
(VF) connected to IPM
defective.
Check common temperature
sensor (VF) and replace if
necessary.
Fault 32
Tank temperature sensor defective
8 Tank temperature sensor (SF)
connected to IPM defective.
Check storage tank
temperature sensor (SF) and
replace if required.
Fault 33
Temperature sensors incorrectly connected
20 A storage tank temperature
sensor (SF) and mixer
temperature sensor (MF) are
connected to the IPM.
Remove one of the two
temperature sensors (SF or
MF).
21 Two common temperature
sensors (VF) are connected to
the IPM.
Remove one common
temperature sensor (VF).
Fault 34
Connected sensors and mode of operation
do not match.
23 Temperature sensors
connected to the IPM and
assigned operating mode do
not match.
Check the temperature
sensors and assigned
operating mode and adapt if
necessary.
Fault 40
Temperature sensor T1 on collector field 1
defective
101 Short circuit on the sensor
lead (T
1
).
Check temperature sensor (T
1
)
and replace if necessary.
102 Break in sensor lead (T
1
).
Fault 41
Temperature sensor T2 at bottom of solar
tank defective
103 Short circuit on the sensor
lead (T
2
).
Check temperature sensor (T
2
)
and replace if necessary.
104 Break in sensor lead (T
2
).
Fault 42
Temperature sensor T3 on tank at heating
return defective
105 Short circuit on the sensor
lead (T
3
).
Check temperature sensor (T
3
)
and replace if necessary.
106 Break in sensor lead (T
3
).
Fault 43
Temperature sensor T4 at heating return
defective
107 Short circuit on the sensor
lead (T
4
).
Check temperature sensor (T
4
)
and replace if necessary.
108 Break in sensor lead (T
4
).
Display (Æ Item 1, 3 and 4 in fig. 29)
Text Code Cause Remedy (by installer)
90


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