Trane Mitsubishi Electric CITY MULTI Series Technical & Service Manual page 25

Control Mode
3. Drain pump 3-1. Drain pump control
• The drain pump will always run when the unit is in COOL or DRY mode.
(Regardless of the thermo ON/OFF)
• Whenever the operation is changed over to the other modes (including Stop), the drain
pump will stop pumping after approximately 3 minutes.
Float switch control
• Float switch control judges whether the sensor is in the air or in the water by turning the
float switch ON/OFF.
In the water: Detected that the float switch is ON for 15 seconds.
In the air: Detected that the float switch is OFF for 15 seconds
Float SW
ON
OFF
4. Vane (1) The initial vane setting for COOL mode is the horizontal position.
(up/down vane
(2) Vane position:
position change)
Horizontal →Downward A →Downward B →Downward C→Downward D→Swing→Auto
(3) Restriction of the downward vane setting
If the vane position is set to Downward A/B/C/D in [Med1], [Med2], or [Low], the vane will
return to the horizontal position after 1 hour has passed.
OCHT746A
Control Details
15 s 15 s
In the water In the air
25
15 s 1 min 30 s 1 min 30 s
In the water Error
postponement
Remarks
Drain pump
abnormal
• "ONLY 1 hr" appears on
the wired remote controller.