Perfect Aire 3PAMS18-HH-MZO2, Service Manual

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24
off on
Cool-F9
10S 30S
TimeA 10S
4-way valve defrosting Defrosting over
compressor
Indoor fan
Outdoor fan
EXV open
frequency
Max 10 minutes
frequency
Compressor stops
off
Anti-cold control
off
480P 480P for 240s
5.4.3 Outdoor Fan Control
5.4.3.1 Cooling Mode
Under normal operating conditions, the system
chooses the running fan speed according to the
ambient temperature:
T4
℃
45
43
Supper high fan speed
28
26
High fan speed
25
23
Middle fan speed
22
20
Low fan speed
19
17
Supper low fan speed
10
9 Breeze fan speed
0
-1 F fan speed
-5
-6
G fan speed
-10
-11
H fan speed
I fan speed
When low ambient cooling is in effect::
Outdoor fan speed control logic (low ambient
cooling)
When T4 <15
℃
(59
℉
) and T3 < 30
℃
(86
℉
),
the unit enters into low ambient cooling mode.
The outdoor fan chooses a speed according to T3.
When T3
≥38
℃
(100.4
℉
) or when T4
≥15
℃
(59
℉
), the outdoor fan chooses a speed according
to T4 again.
38
Exit low ambient cooling
mode
, run with high fan
for 1 minute
Low
30
27
23
off
LowCoolT3_Down
T3/°C
LowCoolT3_ON
LowCoolT3_OFF
Increase fan speed
keep
Decrease
Fan stop
5.4.3.2 Heating Mode
Under normal operating conditions, the system
chooses a running fan speed according to
ambient temperature: