Midea MS9V-09HRDN1-QC2 9V Series, Руководство по обслуживанию

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Auto fan action in heating mode.
8.4.3.4 Defrosting mode
：
Conditions of defrosting:
Condition 1: If T4
＞
0
℃ ,
When the units are running, if any one of the following conditions is satisfied, the unit starts defrosting:
①
If the accumulated time of the unit working within T3
＜
3
℃
reached 40 minutes and T3 keeps lower
than -6
℃
over 3 minutes.
②
If the accumulated time of the unit working within T3
＜
3
℃
reached 80 minutes and T3 keeps lower
than -4
℃
over 3 minutes.
Condition 2: If T4
＜
0
℃ ,
If satisfied any item of the condition 1 and the T2 temperature has decreased 5
℃
, starts defrosting.
Note: T2 is the maximum value of the evaporator temperature during the anti-cold wind function. It’s
recorded by the system automatically.
Condition 3:
No matter what value T4 is, if the accumulated time of the unit working within T3
＜
3
℃
reached 120
minutes and T3 keeps lower than -2
℃
over 3 minutes, starts defrosting.
Condition of ending defrosting:
If any one of following items is satisfied, defrosting will stop and the machine will turn to normal heating
mode.
①
For the 18K unit : T3 >12
℃
; For the 24K unit:: T3 >15
℃
;
②
T3>8
℃ and rem ains for 80 seconds.
③
The defrosting time lasts 10min.
Defrosting action
：