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

Control Mode
2-1. Hot adjust mode
The fan controller becomes the hot adjuster mode for the following conditions.
1 When starting the HEAT operation
2 When the temperature adjustment function changes from OFF to ON.
3 When release the HEAT defrosting operation
A: Hot adjust mode starts.
B: 5 minutes have passed since the condition A or the indoor liquid pipe temperature reached 86°F or more.
C: 5 minutes have passed since the condition A or the indoor liquid pipe temperature reached 95°F or more.
D: 2minutes have passed since the condition C.
(Terminating the hot adjust mode)
2-2. Residual heat exclusion mode
When the condition changes the auxiliary heater ON to OFF (temperature adjustment
function, or operation stop, etc.), the indoor fan operates in [Low] mode for 1 minute.
2-3. Thermo-OFF mode
When the temperature adjustment function changes to OFF, the indoor fan operates in
[Extra low].
2-4. Heat defrosting mode
The indoor fan stops.
3. Drain pump 3-1. Drain pump control
The drain pump turns ON for the specified amount of time when any of the following
conditions has been satisfied:
1 ON for 3 minutes after the operation mode is switched from COOL or DRY to another
operation mode (FAN).
2 ON for 6 minutes after the float switch is submerged in the water when the float switch
control judges the sensor is in the water.
3-2. 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.
4. Vane control (1) Initial setting: OFF → HEAT···[last setting]
(Up/down vane
When the last setting is [Swing] ··· [Downward D]
change)
When changing the mode from exception of HEAT to HEAT operation
···[Downward D]
(2) Vane position:
Horizontal →Downward A →Downward B →Downward C→Downward D→Swing→Auto
(3) Restriction of vane position
1 The vane is horizontally fixed for the following modes.
(The control by the remote controller is temporally invalidated and control by the unit.)
• Thermo-OFF
• Hot adjust [Extra low] mode
• Heat defrost mode
OCH715A
Control Details
Hot adjust mode* 1
[Low]* 3
[Extra Low]* 3
[OFF]* 2
A B C
Set fan speed by the remote controller
D
OFF
25
Remarks
1
* "Heat Standby" will be
displayed during the
hot adjust mode.
2
* The step change
of A to B will not be
performed at the first
thermo-ON mode
since the HEAT
operation has started.
* 3 The fan speed varies
according to the setting
of DIP SW1-7 and 1-8
as shown in the table
below.
DIP SW 1-8
ON
B to C [Extra Low] B to C [Low]
ON
C to D [Low] C to D [Low]
B to C [Extra Low]
B to C [Setting airflow]
C to D [Low]
C to D [Setting airflow]
Note: Initial setting
• This control is same
for the model without
auxiliary heater.
• Operates as it would in
COOL operation.
OFF