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54 | Troubleshooting
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Fault 13
System configuration: BUS device changed
or replaced
Check system configuration for heating
circuit x and connections on IPM for heating
circuit x.
Fault 14
System configuration: incompatible BUS
device
DHW controlled by boiler. IPM control of
DHW has no effect.
Fault 14
System configuration: incompatible BUS
device
IPM for cylinder must be set to identification
3 or higher.
Fault 19
Unable to save parameter settings
Fault 30
Mixer temperature sensor faulty
Fault 31
External CH flow temperature sensor faulty
Fault 32
Cylinder temperature sensor faulty
Fault 33
Temperature sensors incorrectly connected
Fault 34
Temperature sensors connected and mode
of operation do not match
6 720 800 817 (2012/02)
Items 1, 3 and 4 in Fig. 16)
Code Cause
159 BUS subscriber changed or
117 Incompatible BUS subscriber:
118
119
202 BUS subscriber is configured
7
6
8
20
21
22
23
replaced.
Incompatible BUS subscriber:
but not available at present.
Mixer temperature sensor (MF)
connected to IPM faulty.
Common temperature sensor
(VF) connected to the IPM
faulty.
Cylinder temperature sensor
(SF) connected to the IPM
faulty.
Cylinder temperature sensor
(SF) and mixer temperature
sensor (MF) are connected to
the IPM.
Two common temperature
sensors (VF) are connected to
the IPM.
A temperature sensor is
connected to the IUM.
Temperature sensors
connected to the IPM and the
associated operating mode do
not match.
Remedy (by contractor)
Check system configuration for
heating circuit x and IPM
connections for heating circuit x.
Identify incompatible BUS
subscriber and remove from
the system.
Set IPM for cylinder to code 3
or higher.
Check system layout, check
system configuration, modify if
necessary and set parameter
again.
Check mixer temperature
sensor (MF) and replace if
necessary.
Check common temperature
sensor (VF) and replace if
required.
Check cylinder temperature
sensor (SF) and replace if
required.
Remove one of the
temperature sensors (SF or
MF).
Remove one of the common
temperature sensors (VF).
Remove the temperature
sensor and insert a coding plug
if necessary.
Check temperature sensors
and associated operating mode
and adjust if necessary.
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Table of Contents
Troubleshooting
