Bosch WTD 15-4 AME 23 - Error Code Definitions (Part 3)

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F2
Solenoid valve drive circuit
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
F4
MCU PC (micro controller) instruction error
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
F5
Instructions compile and execution error
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
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.
Lock out
FP
APS I/O short circuit error
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
F8
MCU ROM (micro controller) error
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
F9
MCU registration DC (micro controller) error
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
EH
Remote controller removes the error code 5 times
continuously within 15mins.
Error is resolved by manual reset.
Lock out
Fb
Lock function self-check error (PCB internal error)
Error is resolved by manual reset. If error persist replace
control unit.
Lock out
Table 21 – Error code list
Bosch, Termotecnologia S.A
TT-DW/PRM-STI – International Training and Technical Support
Aveiro Plant - Portugal