Herz BW/WW, Operating Instructions Manual

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Fault reports and their corrections 9
Betriebsanleitung_commotherm_5_15_SW_WW_Touch_Englisch_V1.2 59
No. Fault report Cause of fault Fault correction
031
ANTIFREEZE HOT
WATER TANK
Too low temperature in the hot
water tank
 Antifreeze function
is activated
 Display only, no action required.
032
ANTIFREEZE
HEATING CIRCUIT
Too low temperature in the
heating circuit
 Antifreeze
function is activated
 Display only, no action required.
033 ANTIFREEZE SOLAR
Too low temperature in the solar
tank
 Antifreeze function is
activated
 Display only, no action required.
034
ANTIFREEZE HYDR.
COMPENSATOR
Too low temperature in the
hydraulic
compensator 
Antifreeze function is activated
 Display only, no action required.
037
HOT WATER TANK
LOADING
Hot water tank didn´t reach set
temperature during loading time;
hot water tank loading gets
blocked till fault correction
 Adapt loading time
 Activate hot water tank priority

Check hydraulic system
038 MAINTENANCE
This fault text occurs after 1000
operating hours
 Fault has to be receipted by an
authorized person:
Settings

Enter Code
039 SERVICE
This fault text occurs after 3000
operating hours  Carry out boiler system maintenance
by authorised personnel
044
LEGIONELLA
PROTECTION
Tank thermal disinfection active
 Tank will be heated up to 70
°C
 Display only, no action required.
046 MOD.ERR EXT.
Communication error of CAN 2 to
external module
 Check module CAN connection
 Check module
 ✆
- contracting party
047 MOD.ERR INT.
Communication error of CAN 1 to
external module
 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 internal
module

✆
- contracting party
053
ADDITIONAL FLUE
GAS SENSOR Additional boiler flue gas
temperature out of range
 Check sensor, replace as necessary
 Check plug, replace as necessary

Check wiring incl. Connections,
replace as necessary

054
EXTERNAL SET
POINT
No Signal of external
requirement or control (if line
monitoring is active)
 Check sensor, replace as necessary
 Check plug, replace as necessary
 Check wiring incl. Connections,
replace as necessary
056 SCREED BAKE OUT
Failure at screed bake out; Flow
set temperature could not be
reached
 Function check mixer with mixer
motor
 Function check pump
 Check sensor position

Required heat output to high
057 CHECK DATA MODUL
Module parameter is not in the
specified range  Check module parameter
 Restart T-Control
072 CAN FAULT Failure CAN Bus  ✆ - contracting party
077 ADDITIONAL INPUT
Additional input (e.g.: system
pressure, CO-sensor) active  Check failure additional input
aggregate