A.O. Smith Cyclone BFC-28, Installation, User And Service Manual

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is
Instruction manual BFC 81
F06 (blocking error)
Short circuit between
flame probe and earth
Damaged cable in
contact with metal
surface or bent flame
probe.
Check the wiring and the flame probe. Replace the wiring and/or
flame probe if necessary.
If the error persists, contact your installation engineer.
To replace the necessary parts, you must contact your installation
engineer
Ceramic part of the
flame probe is
broken/cracked.
1. Check whether the ceramic part of the flame probe is still intact,
in the vicinity of the air distribution plate of the burner.
2. If not the flame probe must be replaced.
F07 (lock out error)
A flame has been
detected after the gas
control valve was
closed.
Defective gas control
valves
1. Check whether there is still burner pressure present, after the
gas control valves have closed.
2. Check whether a flame is still present, after the gas control
valves have closed.
3. If this is the case, the gas control valve must be replaced.
If the error cannot be resolved or is persistent, contact your
installation engineer
To replace the necessary parts, you must contact your installation
engineer
F08 (lock out error)
Error message from
safety relay
Flame detection before
the gas control valve
opened.
1. Reset controller.
2. If the error appears again, replace the controller. If the error cannot be resolved or is persistent, contact your
installation engineer
To replace the necessary parts, you must contact your installation
engineer
F09 (lock out error)
Water temperature
protection.
Temperature at the top
of the tank exceeds
93
o
C.
1. Check that the circulation pump (if present) is working
2. Check the position of temperature sensor T
1
3. Reset controller
If the error cannot be resolved or is persistent, contact your
installation engineer
F11 (blocking error)
Flame detection with
closed gas control
valve.
Defective gas control
valves
See F07.
F19 (blocking error)
Power supply voltage is
too low.
There is not enough
supply voltage.
1. Check that there is power to the controller
2. The measured voltage must be 230 V
AC
(-15%, +10%)
See the electrical diagram (17 "Appendices").
If the error persists, consult your installation engineer
Code + description Cause Measure Remark