Auto Mode Function; Forced Operation Function; Action Of 4-Way Valve; Two Speeds Outdoor Fan Function - Midea MSV1-09HRDN1-QC2A Service Manual

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).
-1≤∆T≤1℃
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.

9.9 Forced operation function

9.9.1 Forced cooling and auto function can carry out with a touch button. In these two modes, the machine can be
changed by remote controller to any other mode at any moment.
9.9.2 When the machine is off, pressing the touch button will carry the machine to forced auto mode, after this, if
pressing the button once again within 5 seconds, the machine will turn into forced cooling mode. In forced auto,
forced cooling or any other operation mode, pressing touch button will turn off the machine. In forced operaton,
remote control is available.
9.9.3 In forced operation mode, all general protections is available.
9.9.4 In forced cooling mode, after running for 30 minutes. the machine will turn to normal auto mode which setting
temperature is 24℃.
9.9.5 The action of forced auto mode is the same as normal auto mode which temperature is 24℃.

9.10 Action of 4-way valve

In heating, fan-only, standby or turning off mode, 4-way valve is off, while in cooling or drying mode 4-way valve
is on. If the machine changes operation mode from cooling or drying mode to some other mode, 4-way valve will
be delayed off 2 minutes after compressor stop. For defrosting, please refer to the passage "defrosting mode".

9.11 Two speeds outdoor fan function

9.11.1 Outdoor fan starts at the same time with compressor, but stops 30 seconds later after compressor stop.
9.11.2 Outdoor fan action in heating mode(including heating in auto mode).
∆T=T1-Ts
∆T＞1℃
∆T＜-1℃
Running mode
Cooling
Heating
Fan-only
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