Herz firematic CONDENSATION 30, Operating Instructions Manual, Page: 68 / 92

10 Fault reports and their corrections
68
No. Fault report Cause of fault Fault correction
039 SERVICE
when exceeding the set inspection
interval
Carry out boiler system
maintenance by authorised
personnel
040 OVERHEAT ADD.BOILER
add. boiler temperature over 92 °C
increase
Check add. boiler pump
Check settings
041 HEATING OFF
Boiler operation mode “HEATING
O
FF” is activated
-
042
BLOCKING
PROTECTION
every Monday at 12 o´clock
-
043 TIMEOUT ADD. BOILER
Additional boiler minimum flue gas
temperature wasn´t reached within
1 hour Check flue gas sensor additional
boiler
check add. boiler settings
044
LEGIONELLA
PROTECTION
Tank thermal disinfection active;
Tank will be heated up to setted
legionella protection temperature
(weekly) -
045
CHIMNEY SWEEP.
MODE
when starting Chimney clean mode
(see chapter Chimney)
046 MOD.ERR EXT.
CAN communication to the external
module is interrupted
Check module CAN connection
Check module
✆
- contracting party
047 MOD.ERR INT.
CAN communication to the internal
module is interrupted
Check module CAN connection
Check module
✆
- contracting party
048 MOD.ERR BOILER
CAN communication to the power
unit is interrupted
Check module CAN connection
Check module
✆
- contracting party
049
DATAERROR MEMORY
EXTERNAL Data adjustment error at external
module
✆
- contracting party
050
DATAERROR MEMORY
INTERNAL Data adjustment error at external
module
✆
- contracting party
051
DATAERROR MEMORY
BOILER
in the event of an error in the
adjustment data of the power unit
(when starting the system)
✆
- contracting party
053
ADDITIONAL FLUE GAS
SENSOR Sensor break; Value outside the
measuring range (-10 - 600°C)
Check sensor, replace as renew
Check plug, replace as renew
Check wiring incl. connections,
replace as renew
054 EXTERNAL SET POINT
Signal from external control does
not provide a valid value (signal less
than 1.2 volts)
Check external control signal
Check plug, replace as renew
Check wiring incl. connections,
replace as renew
055 BACK FLOW SET
The return temperature has not
risen above 53 °C within 2 hours
Function check mixer with mixer
motor
Function check pump
Check sensor position
056 SCREED BAKE OUT
Set flow temperature does not
reach the desired flow setpoint
temperature for 3 hours
Function check mixer with mixer
motor
Function check pump
Check sensor position
Required heat output to high
057 CHECK DATA MODUL
Setting value is not within the valid
range when switching on the boiler
Restart T-Control
Check boiler parameter