Appendix
0020261188_00 ecoTEC plus Installation and maintenance instructions
43
Status code
Meaning
S.98
Flow/return sensor test running, heating demands are blocked.
S.108
Purging process is running
C
Fault messages
–
Overview
Message
Possible cause
Measure
F.00
Flow temperature sensor
interruption
NTC plug loose/not plugged in
▶
Check the NTC plug and plug connection.
NTC sensor defective
▶
Replace the NTC sensor.
Multiple plug loose/not plugged
in
▶
Check the multiple plug and plug connection.
Interruption in the cable harness
▶
Check the cable harness.
F.01
Return temperature sensor
interruption
NTC plug loose/not plugged in
▶
Check the NTC plug and plug connection.
NTC sensor defective
▶
Replace the NTC sensor.
Multiple plug loose/not plugged
in
▶
Check the multiple plug and plug connection.
Interruption in the cable harness
▶
Check the cable harness.
F.03
Cylinder temperature
sensor interruption
NTC sensor defective
▶
Replace the NTC sensor.
NTC plug loose/not plugged in
▶
Check the NTC plug and plug connection.
Connection to cylinder electron-
ics defective
▶
Check the connection to the cylinder electronics.
F.10
Flow temperature sensor
short circuit
NTC sensor defective
▶
Replace the NTC sensor.
Short circuit in the cable har-
ness
▶
Check the cable harness.
F.11
Return temperature sensor
short circuit
NTC sensor defective
▶
Replace the NTC sensor.
Short circuit in the cable har-
ness
▶
Check the cable harness.
F.13
Cylinder temperature
sensor short circuit
NTC sensor defective
▶
Replace the NTC sensor.
Short circuit in the cable har-
ness
▶
Check the cable harness.
F.20
Safety shutdown: Safety
cut-out
Flow NTC defective
▶
Check the flow NTC.
Return NTC defective
▶
Check the return NTC.
Earth connection faulty
▶
Check the earth connection.
Stray spark via the ignition
cable, ignition plug or ignition
electrode
▶
Check the ignition cable, ignition plug and ignition electrode.
F.22
Safety shutdown: Water
deficiency
Insufficient/no water in the
product.
▶
Fill the heating installation. (
→
Page 21)
Interruption in the cable harness
▶
Check the cable harness.
F.23
Safety shutdown: Temper-
ature spread too great
Pump blocked
▶
Check that the pump is working correctly.
Pump runs with insufficient out-
put
▶
Check that the pump is working correctly.
Flow and return NTC connected
the wrong way round
▶
Check the connection for the flow and return NTC.
F.24
Safety shutdown: Temper-
ature rise too fast
Pump blocked
▶
Check that the pump is working correctly.
Pump runs with insufficient out-
put
▶
Check that the pump is working correctly.
Non-return valve blocked
▶
Check that the non-return valve is working correctly.
Non-return valve installed incor-
rectly
▶
Check the installation position of the non-return valve.
System pressure too low
▶
Check the system pressure.
F.25
Safety shutdown: Flue gas
temperature too high
Flue gas safety cut-out plug is
not plugged in or is loose
▶
Check the plug and the plug connection.
Interruption in the cable harness
▶
Check the cable harness.
F.27
Safety shutdown: Flame
simulation
Gas solenoid valve not leak-
tight
▶
Check that the gas solenoid valve works correctly.