Operation Modes And Functions - Fisher FSAI-SU-92AE2 Service Manual

7.4 Operation Modes and Functions

7.4.1 Fan mode
( 1) Outdoor fan and compressor stop.
(2) Temperature setting function is disabled,
and no setting temperature is displayed.
(3) Indoor fan can be set to
high/med/low/auto.
(4) The louver operates same as in cooling
mode.
(5) Auto fan:
T1
a
b
c
d
e
7.4.2 Cooling Mode
7.4.2.1 Compressor running rules
When T1- Ts <∆T -2℃, the compressor will
c
stop,
when T1—Ts >∆T -0.5℃，the compressor will
c
be activated.
∆T
is the programmed parameter of
c
temperature compensation.
When the AC run in mute mode, the
compressor will run with low frequency.
When the current is more than setting value,
the current protection function will be activated,
and the compressor will stop.
7.4.2.2 Outdoor fan running rules
The outdoor unit will be run at different fan
speed according to T4.
For different outdoor units, the fan speeds are
different.
T4
A+
A
B
C
D
E
7.4.2.3Indoor fan running rules
In cooling mode, indoor fan runs all the time
and the speed can be selected as high,
medium, low and auto.
When the setting temp. is reached, if the
compressor stop running, indoor fan motor will
run in Minimum speed or setting speed.
The indoor fan is controlled as below:
Setting fan
T1-Td ℃(° F)
speed
H
M
L
The auto fan acts as below rules:
T1
a
b
c
d
e
7.4.2.4 Condenser temperature protection
28
Actual fan speed
H+(H+=H+G)
A H（=H）
B
H-（H-=H-G)
C
M+(M+=M+Z)
D M(M=M)
E
M-(M-=M-Z)
F
L+(L+=L+D)
G L(L=L)
H
L-(L-=L-D)
I