INVENTOR P8MVI32-09WiFi, Service Manual

Page: 40 / 72

38
The auto fan acts as below rules:
a
b
c
d
T1-TS
e
10.4.2.4 Condenser temperature
protection
For 9k,12k models,
T3
Resume
Off
Decrease
Hold
Increase
For 18k, 24k models,
T3
Resume
Off
Decrease
Hold
When condenser temperature is more
than setting value, the compressor will
stop.
10.4.2.5 Evaporator temperature
protection
When Evaporator temperature is less
than setting value, the compressor will
stop.
10.4.3 Heating Mode
10.4.3.1 Compressor running rules
When T1-Ts>ΔT, the compressor will
stop,
when T1-T
S
<ΔT-1
，
the compressor will
be on.
ΔT is the programmed parameter of
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.
10.4.3.2 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.
For 9k,12k models,
The fan speed is controlled by T4 and
compressor frequency.
D
C
B
T4&frequency
&f
A+
A
For 18k,24k models,
T4
E
D
C
B
A
A+