Johnson Controls YJHJXH024BARR-FX, Service Manual

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Function and Control
Domestic Air Conditioner
23
Heating mode ˖
K=∑Ki/the number of running machines
The calculation of the actual output frequency: when there is no healthy airflow: F =F-ED-*×P×K
When the healthy airflow has been set: F =F-ED-*×P×K ˄ airflow speed ˅ ×K ˄ healthy airflow ˅
When refrigerating, it is needed to satisfy ˢˉ˩ IN ˉ̀ < F< ˢˉ˩˝˴ˉ̀
When heating, it is needed to satisfy ˢˉ˩ IN ˉ r< F< ˢˉ˩˝˴ˉ r
5.2.2: The outdoor fan control (exchange fan)
When the fan is changed among every airflow speed (including stop blowing), in order to avoid the
airflow speed from skipping frequently, it must be kept under each mode for over 30 seconds, and
then it can be changed to another mode (when refrigerating, the time is changed to 15 seconds).
5.2.2.1:The outdoor fan control when refrigerating or dehumidifying
After the compressor is started for 5 seconds, the outdoor fan is started at the medium speed at first,
after 30 seconds,it begins to control the airflow speed according to the temperature conditions of the
outdoor environment.
5.2.2.2:The outdoor fan control when heating
ΔT <1
˙
1
˙
2
˙
3 >=4
The percentage of the
rated frequency P
50% 70% 100% 120% 140%
ΔT <1
˙
1
˙
2
˙
3 >=4
The percentage of the
rated frequency P
50% 70% 100% 140% 140%
The indoor set
airflow speed
Breeze Low Medium High Strong Quiet Healthy
airflow
The percentage
of the rated
frequency Ki
70
ˁ
70% 90% 100% 120% 70% 70%
The temperature of the
outdoor air
˄
Ta
˅
The temperature of the outdoor
coil
˄
Te
˅
Airflow speed
Ta 30
̱ ć
—— High
26 Ta<30 ć̰ ć —— Keeping the speed
24 Ta<26 ć̰ ć —— Medium
23 Ta<24 ć̰ ć —— Keeping the speed
5 Ta<23
ć̰ ć
—— Low
Ta<5 ć 15 Te ć̰ Low
15 >Te ć Stop
YJHJZH024BARRAFX
-SM