Auto Mode Function - Midea MSC-09HRDN1-QD0(E) Service Manual

9.7.7 Defrosting action.
compressor
4-way valve
outdoor fan
indoor fan
indoor fan breeze 10s
9.7.8 Rating capacity test function.
1) Set the indoor unit with remote controller as: high fan, 30℃ in heating mode, then press "TURBO" button
on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine
will turn into rating capacity test mode, the buzzer will make a "di" sound for 2 seconds continuously. Also,
indoor fan will change to rating speed, the frequency of compressor will be fixed as rating value. Any
condition of above is not satisfied, the machine can not be turned into rating capacity test mode.
2) The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or
setting temperature.
9.7.9 Turbo function in heating mode. (press the "TURBO" button on remote controller)
1) Elevate current frequency(excluding F8) to a higher grade. If indoor fan is in low speed or pause caused by
defrosting or anti-cold-wind function, frequency of compressor will not be elevated one grade until these
limit has been released.
2) Indoor fan changes to turbo speed and anti-cold-wind function is valid.
3) After running for 30 minutes the machine will turn back to previous setting mode.

9.8 Auto mode function

9.8.1 This mode can be chosen with remote controller and the setting temperature can be changed between 17~30℃.
In auto mode, the machine will choose cooling, heating or fan-only mode according to ∆T(∆T =T1-Ts).
9.8.2 Indoor fan will choose auto speed of relevant mode.
9.8.3 If the machine switches mode between heating and cooling, compressor will keep stopping for 15 minutes and
then rechoose mode according to ∆T.
9.8.4 If the setting temperature is modified, the machine will rechoose running function.
on
off
on
off
on
off
on
off
60s
70s
∆T=T1-Ts
∆T＞1℃
-1≤∆T≤1℃
∆T＜-1℃
F8
no longer than 10 minutes
Running mode
30s
Cooling
Heating
Fan-only
30