Si33-105 Outline of Control (Indoor Unit)
Function R407C PLUS Series Heat Recovery System 97
4. Outline of Control (Indoor Unit)
4.1 Drain Pump Control
1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure
below).
4.1.1 When the Float Switch is Tripped While the Cooling Thermostat is ON:
"
1. The objective of residual operation is to completely drain any moisture adhering to the fin of
the indoor unit heat exchanger when the thermostat goes off during cooling operation.
4.1.2 When the Float Switch is Tripped During Cooling OFF by
Thermostat:
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