Outline of Control (Indoor Unit) Si33-105
98 Function R407C PLUS Series Heat Recovery System
4.1.3 When the Float Switch is Tripped During Heating Operation:
During heating operation, if the float switch is not reset even after the 5 minutes operation, 5
seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.
4.1.4 When the Float Switch is Tripped and “AF” is Displayed on the
Remote Controller:
Note: If the float switch is tripped five times in succession, a drain malfunction is determined to have
occurred. “AF” is then displayed as operation continues.
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