Midea MSY-09HRDN1-QC8 Service Manual page 30

seconds with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind
function is available.
If the machine runs in rating capacity test mode, indoor fan runs with rating speed, and
anti-cold-wind is disabled.
8.7.2 Indoor fan speed can be set as high, medium, low or auto grade, but anti-cold-wind function
is preferential.
Auto fan action in heating mode.
8.7.3 The operation frequency of compressor after starting submits to following rule:
When the machine runs, if ΔTh stays in a zone for 3 minutes, action of frequency is as
follow:
Zone A: Elevate the current frequency one grade, and not stop until the maximum
grade.
Zone B: Keep the current frequency.
Zone C: Descend the current frequency one grade.
Zone D: Compressor stops after running with F1 for 60 minutes or when ΔTh＞6℃.
8.7.4 Outdoor unit current control in heating mode.
℃
2.5
2.0
1.5
1.0
℃
5.0
4.5
3.5
3.0
2.5
low
mediu
high
D
C
B
A
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