Master Control; Operation Mode Control; Cool, Dry And Heat Mode; Stop Mode - Fujitsu Airstage VR-II Series Service Manual

3-2 MASTER CONTROL

3-2-1 Operation Mode Control

(1) Mode setting
Each possible operation mode in each connectable type is controlled as below.
RB : I.U = 1 : 1
RB : I.U = 1 : 2

(2) Cool, Dry and Heat Mode

Each operation mode is controlled as below.
Indoor fan motor Operates according to the
AIRFLOW MODE setting.
Drain pump
Pulse controlled by the temp-
Electrical
erature difference calculation
expansion valve
and freeze prevention control

(3) Stop mode

Indoor fan motor
Electric expansion valve
Drain pump
8
RB : I.U = 0 : 1
Cool
See the fan control page.
Turns ON-OFF by the drain pump control function
Pulse controlled by the
temperature difference
calculation and freeze
prevention function
: OFF
: Stop pulse
: Turns ON-OFF by the drain pump control function
Connectable type
Free Cool / Heat
Fix Cool / Heat
Only Cool
: Mode available
: Mode unavailable
X
:
*1 Mode available when the priority given to administrative indoor unit.
*2
:
Mode available between Dry and Cool.
Dry Heat
Operates according to the
AIR FLOW-MODE setting, and
besides cold air prevention
operation
Pulse controlled by the tempe-
rature difference.
03-02
Custom -
Cool Dry Heat Auto
Auto
*1
*1
X
X *2
Fan
Operates according to the
AIR FLOW-MODE setting.
Stop pulse
Fan
X