10
Errors and faults
Installation and operating instructions
61
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
10.3
Error codes
Code
Component/Designation
Error
E 12
Combustion control locking
error
t
V
or t
R
defective (cable break, short circuit) or safety temperature limiter STBK has tripped (e.g. low water
or pump defective)
E 65
During calibration, difference from prior value was too high (unclean supply air, electrode replacement,
electrode defective).
E 129
Inflow temperature exceeds limiter temperature (overtemperature, no heat dissipation).
E 130
Return flow temperature exceeds limiter temperature (overtemperature, no heat dissipation).
E 132
2× no flame formation at end of safety time (no gas, valves do not open, no ignition sparks).
E 138
2× flame failure at end of safety time (ionisation electrode defective or dirty)
E 148
Gas valve negative. A flame is still detected 15 s after the burner shutdown (gas valve jams).
E 152
Speed not reached during pre- and post-ventilation (burner blower defective, power supply to blower,
electronics error in blower, cable break).
E 154
Blower stationary position not reached (burner blower defective, electronic error in burner blower).
E 158
EEPROM error (manufacturer’s parameters).
E 159
EEPROM error (safety parameters).
E 189
Regulation deviation during ionisation process too high (from 2nd error) (burner earthed incorrectly or
faulty supply voltage combustion control, gas flow pressure too low, ionisation electrode bent or oxidised,
ionisation track faulty, safety gas control block defective).
E 190
Impermissible gas fitting initialisation within 10 s (from 2nd error) or
blower falls below 80 % of the minimum speed within 10 s (from 2nd error).
(Burner blower defective, incorrect gas type set, missing/wrong gas nozzle, safety gas control block de-
fective, gas flow pressure too low).
E 191
Internal electronic error - from 2nd error (switch device on/off).
E 192
A value fell below the minimum limit values during calibration (flue gas recirculation, electrodes oxidised,
ionisation track faulty, poor earthing, transition resistances).
E 194
Interruption during calibration (no heat dissipation, minimum calibration time not met).
E 195
Impermissible internal value (electronic error).
E 202
A value exceeded the maximum limit values during calibration (unclean supply air, basic value too high).
E 215
EEPROM error (electronic error).
E 226
Error found in the flame amplifier evaluation during the idle state check (electronic error, short circuit ion-
isation electrode or cable).
E 227
Combustion control internal error.
Tab. 10-2
Error code of locking faults (can be detected by the combustion control)
"Inside device:" "Heating Module" is displayed for location informa-
tion
Code
Component/Designation
Error
E 2
Automatic combustion con-
trol
Temporary fault, burner
shutdown, automatic re-
lease when error condition
no longer active
Return flow temperature exceeds monitor temperature (overtemperature, no heat dissipation).
E 6
Inflow temperature exceeds monitor temperature (overtemperature, no heat dissipation).
E 32
Undervoltage with 230 V mains voltage or 18 V internal DC voltage (electronic error, switch device on/
off).
E 43
Return flow temperature (t
R1
) is higher than inflow temperature (t
V1
) + 12 K for longer than 5 s.
E 44
Inflow temperature increase too rapid.
E 45
Spread (t
V1
- t
R1
) too large.
E 66
Interruption during calibration (no heat dissipation, minimum calibration time not met).
E 90
Communication interrupted between combustion control and controller PCB control panel (check cable
and plug connections, total reset, replace controller PCB control panel, replace combustion control).
E 96
5x reset within 15 min. Another reset is not possible until after a further 15 min.
E 98
Error found in the flame amplifier evaluation during the idle state check (electronic error, short circuit ion-
isation electrode or cable).
E 99
Combustion control internal error.
Summary of Contents for GCU compact Series
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