Service Manual

 Product Features 7 
• If any one of the following conditions is satisfied,
defrosting ends and the machine switches to normal
heating mode:
• T3 rises above TCDE1.
• T3 maintained above TCDE2 for 80 seconds.
• Unit runs for 10 minutes consecutively in defrosting
mode.
3.5.5 Evaporator Temperature Protection
When the evaporator temperature exceeds a preset
protection value, the compressor ceases operation.
3.6 Auto-mode
• This mode can be selected with the remote controller
and the setting temperature can be changed between
62°F~86°F.
• In auto mode, the machine selects cooling, heating, or
fan-only mode on the basis of ∆T (∆T =T1-TS).
∆T Running mode
∆T>A Cooling
B℃≤∆T≤A Fan-only
∆T<B Heating*
Heating*: In auto mode, cooling only models run the fan
• Indoor fan will run at auto fan speed.
• The louver operates same as in relevant mode.
• If the machine switches mode between heating and
cooling, the compressor will keep stopping for certain
time and then choose mode according to ∆T.
3.7 Drying mode
• Indoor fan speed is fixed at breeze and can’t be
changed. The louver angle is the same as in cooling
mode.
• All protections are active and the same as that in
cooling mode.
3.8 Forced operation function
Press the AUTO/COOL button, the AC will run as below
sequence:
Forced auto →Forced cooling →Off
• Forced cooling mode:
The compressor and outdoor fan continue to run and
the indoor fan runs at breeze speed. After running for 30
minutes, the AC will switch to auto mode with a preset
temperature of 76°F.
• Forced auto mode:
Forced auto mode operates the same
as normal auto
mode with a preset temperature of 76°F.
• The unit exits forced operation when it receives the
following signals:
• Switch on
• Switch off
• Timer on
• Timer off
• Changes in:
• mode
• fan speed
• sleep mode
• Follow me
• Forced defrosting mode:
• Press AUTO/COOL button continuously for 5s
under forced cooling mode to enter this mode.
• Indoor fan will stop, defrosting lamp will light on.
• Quit this mode and turn off the unit when:
• quit normal defrosting
• turn off by RC
• press AUTO/COOL button continuously for 5s
again
3.9 Sleep function
• The sleep function is available in cooling, heating, or
auto mode.
• The operational process for sleep mode is as follows:
• When cooling, the temperature rises 2°F (to not
higher than 86°F) every hour. After 2
hours, the
temperature stops rising and the indoor fan is fixed
at low speed.
• When heating, the temperature decreases 2°F (to
not lower than 62.6°F) every hour. After 2 hours,
the temperature stops decreasing and the indoor
fan is fixed at low speed. Anti-cold wind function
takes priority.
• The operating time for sleep mode is 8 hours, after
which, the unit exits this mode and does not switch
off.
3.10 Auto-Restart function
• The indoor unit has an auto-restart module that
allows the unit to restart automatically. The module
automatically stores the current settings (not including
the swing setting) and, in the case of a sudden power