Fault Codes - Rotex GCU compact 315 Installation And Maintenance Instructions Manual

10 x Faults and malfunctions

10.3 Fault codes

Code Component/Designation
E12
E65
E129
E130
E132
E138
E148
E152
E154
E158
E159
Firing unit
E189
Interlocking fault
E190
E191
E192
E194
E195
E202
E215
E226
E227
Tab. 10-2 Fault codes for interlocking malfunctions (can be detected by the firing unit)
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"Inside Unit:" "Heating Module" is shown for the location in the fault display
t or t defective (cable break, short circuit).
V R
During calibration, difference from prior value was too high (unclean supply air, electrode re-
placement, electrode defective).
Inflow temperature exceeds limiter temperature (overtemperature, no heat dissipation)
Return flow temperature exceeds limiter temperature (overtemperature, no heat dissipation)
2x no flame formation at end of safety time (no gas, valves do not open, no ignition sparks)
2x flame failure at end of safety time (ionisation electrode defective or dirty)
Gas valve test negative. A flame is still detected 15 s after the burner shutdown (gas valve
jams).
Speed not reached during pre- and post-ventilation (burner blower defective, power supply
to blower, electronics fault in blower, cable break).
Blower stationary position not reached (burner blower defective, electronic fault in burner
blower).
EEPROM fault (manufacturer's parameters).
EEPROM fault (safety parameters).
Regulation deviation during ionisation process too high (from 2nd fault) (burner earthed in-
correctly or faulty supply voltage firing unit, gas flow pressure too low, ionisation electrode
bent or oxidised, ionisation track faulty, safety gas control block defective)
– Impermissible gas fitting initialisation within 10 s (from 2nd fault) or
– blower falls below 80 % of the minimum speed within 10 s (from 2nd fault).
(Burner blower defective, wrong gas type set, missing/incorrect gas nozzle, safety gas con-
trol block defective, gas flow pressure too low)
Internal electronic fault - from 2nd fault (switch device on/off).
A value fell beneath the minimum thresholds during calibration (flue gas recirculation, elec-
trodes oxidised, ionisation track faulty, poor earthing, transition resistances).
Interruption during calibration (no heat dissipation, minimum calibration time not met).
Impermissible internal value (electronic fault).
A value exceeded the maximum threshold values during calibration (unclean supply air, basis
value too high).
EEPROM fault (electronic fault).
Fault found in the flame amplifier evaluation during the idle state check (electronic fault, short
circuit ionisation electrode or cable).
Firing unit internal fault.
Error
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