Forced Operation Function; Action Of 4-Way Valve; Two Speeds Outdoor Fan Function - Carrier 38LUVH025N Service Manual

8.8.2 Indoor fan will choose auto speed of relevant mode.
8.8.3 If the machine switches mode between heating and cooling, compressor will keep stopping for 15
minutes and then rechoose mode according to ΔT.
8.8.4 If the setting temperature is modified, the machine will rechoose running function.

8.9 Forced operation function

8.9.1 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.
8.9.2 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 operation, remote control is available.
8.9.3 In forced operation mode, all general protections is available.
8.9.4 In forced cooling mode, after running for 30 minutes. the machine will turn to normal auto mode which
setting temperature is 24℃.
8.9.5 The action of forced auto mode is the same as normal auto mode which temperature is 24℃.

8.10 Action of 4-way valve

In heating mode, for 18K, 4-way valve is on, while in cooling or drying mode 4-way valve is off. But for 9K and
12K, 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".

8.11 Two speeds outdoor fan function

8.11.1 Outdoor fan starts at the same time with compressor, but stops 30 seconds later after compressor
stop.
8.11.2 Outdoor fan action in heating mode(including heating in auto mode).
℃
17
15
Outdoor fan action in heating mode
(including heating in auto mode).
8.11.3 Outdoor fan action in cooling & drying mode(including cooling in auto & forced mode).
Please refer to the pic. above.
low
high
30
℃
22
20
Outdoor fan action in cooling &
drying mode
(including cooling in auto & forced
mode).
hig
h
low