Auto Mode Function - Carrier 38LUVH025N Service Manual

8.7.7 Defrosting action.
compressor
4-way valve
outdoor fan
indoor fan
indoor fan breeze
10s
8.7.8 Rating capacity test function.
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.
The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting
temperature.
8.7.9 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.

8.8 Auto mode function

8.8.1 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 ΔT(ΔT =T1-Ts).
-1≤ΔT≤1℃
on
off
on
off
on
off
on
off
60s
70s
no longer than 10 minutes
ΔT=T1-Ts
ΔT＞1℃
ΔT＜-1℃
F8
Running mode
Cooling
Fan-only
Heating
29
30s