Invest MSC-24/QD FP, Service Manual

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2) If the compressor stops caused by room temperature rising, indoor fan will be forced to run
127 seconds with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind function is
available.
3) 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.
Δ
T=(oom tem
p)
– (setting
Temp)
medium
2.5
2.0
1.5
1.0
low
high
cy is as follow:
y one grade, and not stop until the maximum grade.
Zone D: Compressor stops after running with F1 for 60 minutes or when Δ Th 6 .
A
8.7.3 After start the operation frequency of compressor submits to following rule:
5.0
4.5
3.0
2.5
D
C
When the machine runs, if Δ Th stays in a zone for 3 minutes, action of frequen
Zone A: Elevate the current frequenc
Zone B: Keep the current frequency.
Zone C: Descend the current frequency one grade.
Δ
Th=(ro
om temp
) – (s
etti
ng
Te
m
p
)
3.5
B