7-8. Drain pump control
¢ Drain control for dehumidification operation
During cooling or dry mode
• →hen the compressor starts, the drain pump starts simultaneously.
• The drain pump operates continuously for 3 minutes after the compressor is turned off.
3 minutes
On
Off
On
Off
Compressor
Drain pump
• →hen the compressor stops by the "Anti-freezing control (cooling and dry mode)" on page 04-
32, the drain pump is turned off in 1 hour after the compressor stops.
• →hen the float switch is on, the compressor, indoor and outdoor fan motor operation are
stopped.
• Drain pump operates continuously for 3 minutes after the float switch is turned off and then
drain pump is turned off.
• →hen the float switch turns on continuously for 3 minutes, "failure indication" operates. (It is
necessary to turn off power for release it.)
• →hen the float switch turns off less than 3 minutes, the unit starts cooling operation. Indoor
fan motor starts after the float switch is turned off and the compressor starts after 3 minutes st.
3 minutes
3 minutes ST
On
Off
On
Off
On
Off
On
Off
Float switch
Compressor
Indoor fan
Drain pump
Less than 3 minutes
7-8. Drain pump control - (04-28) - 7. Various control
CONTROL AND
FUNCTIONS
CONTROL AND
FUNCTIONS
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