ermaf TR 75 - Page 15

GB-15
D
GB
F
NL
I
E
? Fault code A. and 4 flash alternately and the
light is red?
Burner fan continues to operate when the burner
control unit is in idle state.
! Wiring fault.
• Check whether the wiring from plugX21 to the
burner fan has continuity.
! A vacuum is generated in the chimney due to
strong wind and this affects the burner fan.
? Fault code A. and 5 flash alternately?
The burner fan does not reach the required speed
when starting up.
! The air route is blocked.
• Check the air supply route.
! This air filter is not OK.
• Check the air filter and clean it if necessary, see
page11 (Cleaning).
! Fan motor defective.
• Check motor.
! Wiring fault.
• Check wiring (plugs X21 andX12).
? Fault code A. and 5 flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
• Rectify the cause of the fault as described above
for warningF.5.
• Check the air filter and replace it if necessary.
? Fault code A. and 6 flash alternately?
The burner fan does not reach the required speed
during operation.
! The air route is blocked.
• Check the air supply route.
! This air filter is not OK.
• Check the air filter and clean it if necessary, see
page11 (Cleaning).
! Fan motor defective.
• Check motor.
! Wiring fault.
• Check wiring (plugs X21 andX12).
? Fault code A. and 7 flash alternately?
! The air filter is becoming blocked and must be
cleaned shortly.
• Check the air filter and clean it if necessary, see
page11 (Cleaning).
? Fault code A. and 8 flash alternately?
The main fan does not start during the start-up
attempts.
! The pressure switch does not switch.
• Check the air hose on the pressure switch for
dirt and moisture and clean it.
• Check the pressure switch and replace it if nec-
essary.
! The main fan is rotating in the wrong direction.
• Check the wiring. The rotating field may be incor-
rect. Swap L1 and L2, see page4 (Wiring).
! Main fan defective.
• If possible, remove the main fan and replace it.
? Fault code A. and 8 flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
• Rectify the cause of the fault as described above
for warningA.8.