MC • Edition 2023.04 • No. 298 073 Re. -0
14 … 16
15 … 16
Flashing code Error code Error description
1 x ash F A2 Safety chain interrupted
2 x F 60 Parameter change not enabled
3 x F A7 No ame during rst safety period
3 x F bC No ame during second safety period
3 x F A9 Flame failure during stabilisation time
4 x F A8 Flame failure during operation
5 x F AA Idle state control for air pressure monitor
5 x F AB No air pressure
6 x F A6 Extraneous light detected
7 x F 18 Error due to expansion module
8 x F 16 Undervoltage or TWI communication
Error code Error description
F 03 ERROR_WD_HARDWARE
Ambient temperature too high, overvoltage
F 04 ERROR_UNLOCKING_DENIED
Unlocks in the last 15 minutes; wait or use enhanced unlock
F 11 ERROR_UNDERVOLTAGE
Lower voltage limit reached; check power supply
F 12 ERROR_POWERFAILURE
Voltage interrupted during startup, operation or shutdown
F 1d ERROR_PROCESSORFAILURE
MPA is subject to strong EMC interference
F A2 ERROR_SAFETY_CHAIN_OPEN
Safety chain opened; check limiters, breakers and wiring
F A4 ERROR_FEEDBACK_V1_INCORRECT
Faulty output, external voltage present at output; check wiring, EMC eect on valve line
F A5 ERROR_FEEDBACK_V2_INCORRECT
Faulty output, external voltage present at output; check wiring, EMC eect on valve line
F A6 ERROR_EXTERNAL_LIGHT
Ground fault on ionisation electrode, fuel is owing out and burning (check valves), UV tube
defective
F A7 ERROR_NO FLAME_DURING_FIRST SAFETY TIME
Ionisation electrode in incorrect position, ignition electrode in incorrect position, no
fuel present, electrical grid connection for MPA is switched, re monitor defective, line
interrupted.
F A8 ERROR_FLAME_GONE_OUT_DURING_OPERATION
Burner, ame detector, ionisation electrode defective. Check wiring and mixture setting.
F A9 ERROR_FLAME_GONE_OUT_DURING_STABILISATION
See F A7 and F A8
F AA ERROR_IDLE STATE CONTROL_LDW
Air pressure monitor defective, air pressure signal during idle state control, incorrect setting
of air pressure monitor.
F Ab ERROR_NO_AIR_PRESSURE
Air pressure monitor defective, air pressure signal during idle state control, incorrect setting
of air pressure monitor.
F AC ERROR_FEEDBACK_IGNITION_INCORRECT
Faulty output, external voltage present at output, check wiring, EMC eect on ignition
transformer line
F Ad ERROR_LACKOFGAS_GDWMIN
No fuel, gas pressure monitor defective, incorrect adjustment or wiring of gas pressure
monitor
F b3 ERROR_GASVALVEFEEDBACK_FALSE
See F AC
F b6 ERROR_LIMIT SWITCH_V1 (POC)
F bA ERROR_FALSEFLAME_START
Extraneous light > 1 min after heat request
F bC ERROR_NO FLAME_DURING_SECOND SAFETY TIME
F bD ERROR_FLAME DETECTOR_NOT SWITCHED_INVERSE
F bF ERROR_SAFETY_CHAIN_NOT_POTENTIAL-FREE
For a detailed description, see the MPA 41xx product manual
The V2.0 automatic burner control systems are backward compatible.
Prior to replacement, check that the program sequence and parameter values are set correctly.
For further information, see the MPA 41xx product manual.
21. Error overview – minimal display (MPA 4114)
22. Error overview display (MPA 41x2 and display AM 41)
23. Replacement of MPA 41xx V1.1 with MPA 41xx V2.0
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