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Code and description Cause Measure
F03 (lock out error)
Air proving switch error
Switch is closed when fan
is not running.
Damaged wiring/closed circuit. Make sure that the wiring, between the
air proving switch and the control, is
connected and not damaged.
If necessary replace the wires or
reconnect the wires. Reset the controller,
when wires are replaced or reconnected.
Air proving switch defect. Make sure that the air proving switch
works properly.
If necessary, replace the air proving
switch.
When the air proving switch is replaced
and reconnected, reset the controller.
0312266_INNOVO_UKUK_V3.0, 2017-02-10 75
75


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