Forced Operation Function; Action Of 4-Way Valve; Two Speeds Outdoor Fan Function; Timer Function - Midea MSC-18HRDN1-QC2 Service Manual

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 cooling, drying, fan-only, or turning off mode, 4-way valve is off, while in heating mode 4-way valve is on. If the
machine changes operation mode from heating 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).
℃
17
15
Outdoor fan action in heating mode
(including heating in auto mode).
9.11.3 Outdoor fan action in cooling & drying mode(including cooling in auto & forced mode).
Please refer to the pic. above.

9.12 Timer function

9.12.1 Timing range is 24 hours, and the minimum resolution is 15 minutes.
9.12.2 Timer on. After turning off, the machine will turn on automatically when reaching the setting time.
9.12.3 Timer off. After turning on, the machine will turn off automatically when reaching the setting time.
9.12.4 Timer on/off. After turning off, the machine will turn on automatically when reaching the setting "on" time, and
then turn off automatically when reaching the setting "off" time.
9.12.5 Timer off/on. After turning on, the machine will turn off automatically when reaching the setting "off" time, and
then turn on automatically when reaching the setting "on" time.
9.12.6 The tolerance of Timer is 1 minute per hour.
low
high
℃
22
20
Outdoor fan action in cooling & drying mode
(including cooling in auto & forced mode).
high
low
28