Bosch T2400S 8 ND 23 Training And Service Information For After Sales page 45

F2 Solenoid valve drive circuit
Error is resolved by manual reset. If error persist replace
control unit.
F4 MCU PC (micro controller) instruction error
Error is resolved by manual reset. If error persist replace
control unit.
F5 Instructions compile and execution error
Error is resolved by manual reset. If error persist replace
control unit.
F6 MCU RAM DC (micro controller) internal error
Error is resolved by manual reset. Check if voltage is too
low (< 70 V ac). If voltage ok and error persist replace
control unit.
FP APS I/O short circuit error
Error is resolved by manual reset. If error persist replace
control unit.
F8 MCU ROM (micro controller) error
Error is resolved by manual reset. If error persist replace
control unit.
F9 MCU registration DC (micro controller) error
Error is resolved by manual reset. If error persist replace
control unit.
EH Remote controller removes the error code 5 times
continuously within 15mins.
Error is resolved by manual reset.
Fb Lock function self-check error (PCB internal error)
Error is resolved by manual reset. If error persist replace
control unit.
Bosch, Termotecnologia S.A
TT-DW/PRM-STI – International Training and Technical Support
Aveiro Plant - Portugal
Page 45 from 45
Table 21 – Error code list
6 720 887 546 "SM FP_ErP LPP-MPP Europe 2018/05 en"
Lock out
Lock out
Lock out
Lock out
Lock out
Lock out
Lock out
Lock out
Lock out