A.O. Smith Innovo IR 12-160, Installation, User And Service Manual

Page: 78 / 96

Code and description Cause Measure
F05
(lock out error)
Flame error
Too many flame failures
are detected
Recirculating flue gases due too
incorrect roof or wall flue terminal. - Make sure the flue terminal is installed
correctly, refer to Venting system (see
8.7). If necessary, connect the correct
flue terminal.
- Make sure that the terminal is
installed correctly, refer to Venting
system (see 8.7). If necessary connect
the flue terminal correctly.
- Make sure that there are no flue gas
leaks to the rest of the venting
system.If necessary reconnect the
venting system and replace any
damaged seals.
- Make sure that the flue terminal
discharges into a permitted area.
- Make sure that the CO
2
-value
measured in the flue gas outlet is
correct, refer to CO
2
value (see
8.9.4).
- Make sure that the CO
2
value
measured in the air inlet is below
0.5 vol%.
- If necessary, reconnect the venting
system and change the necessary
seals.
No sufficient gas supply. Make sure that the gas supply pressure is
correct.
Supply voltage too low. - Make sure that the supply voltage on
the controller is correct.
- If the supply voltage is below the
stated tolerance and the error
persists, contact your maintenance
and service engineer.
- Install an isolating transformer.
F07
(lock out error)
Ionisation error
Ionisation measured after
the gas control valve was
closed
Defective gas control valve. - Make sure that there is no flame after
the gas control valve has closed.
- If there is a flame, the gas control
valve must be replaced.
F08
(lock out error)
Ionisation error
Ionisation measured
before the gas control
valve was opened
Defective safety relay. - Reset the controller.
- If error appears again, replace the
controller.
F09
(lock out error)
Temperature error
Temperature, in the tank is above the
97ºC. - See measure of error
E01
.
- Make sure that the wiring between 1
and 7 of J9 is connected and not
damaged.
- If necessary, replace or reconnect the
wiring.
- When the wiring is reconnected, reset
the controller.
78 Installation, Maintenance and Service part