21
OCH715
21
Control Mode
Control Details
Remarks
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function
(Function to prevent restarting for 3 minutes)
• Room temperature
]
Set tempe 2°F ···Thermo-ON
• Room temperature
[
Set temperature ···Thermo-OFF
• The ON/OFF commands
by the indoor unit
thermostatic control
are not an ON/OFF
commands to the
compressor but an
open/close commands
to the linear expansion
valve. (The compressor
stops only when the
thermostatic control
for all the indoor units
connected to the same
outdoor unit turns OFF.)
1-2. Anti-freeze control
■ Condition to detect
When the pipe temperature detection thermistor/liquid (TH22) detects 32°F or less in 16 minutes
from thermo-ON, the anti-freeze control initiates, and the unit enters to the thermo-OFF.
■ Condition to release
The timer which prevents reactivating is set for 3 minutes, and anti-freeze control is
cancelled when any one of the following conditions has been satisfied:
1
Pipe temperature detection thermistor/liquid (TH22) reaches 50°F or above.
2
The condition of thermo-OFF has been completed by the thermostat.
3
The operation has changed to a mode other than COOLING.
2. Fan
By the remote controller setting (switch of 4 Auto)
Type
Fan speed notch
4 Auto type
Auto
When [Auto] is set, fan speed is changed depending on the value of:
∆T = Room temperature − Set temperature
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
ON
OFF
15 s
15 s
15 s
1 min 30 s
1 min 30 s
Float SW
In the water
In the air
In the water
Error
postponement
Drain pump
abnormal
4. Vane
(up/down vane
change)
(1) The initial vane setting for COOL mode will be the horizontal position.
(2) Vane position:
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.
•
"1h" appears on the wired
remote controller.
High
Med2
Med1
Low
1.8
-
F
3.15
-
F
5.4
-
F
⊿
T
