Defrosting Mode; Auto-Mode; Drying Mode; Timer Function - York YEFE BZTM-MOW1 Series Service Manual

operation of compressor, except the following situations.
• High temperature protection of evaperator
• Defrosting
• Current protection
1.6.4

Defrosting mode

• The unit enters defrosting mode according to changes
in the temperature value of T3。
• If any one of the following conditions is satisfied,
defrosting ends and the machine switches to normal
heating mode:
• Unit runs for 10 minutes consecutively in defrosting
mode.
• T3≥TE18 or other setting value.
• AC is turned off, or other mode is set.
1.7

Auto-mode

• This mode can be selected with the remote controller
and the setting temperature can be changed between
17°C~30°C.
• In auto mode, the machine selects cooling, heating, or
fan-only mode on the basis of ∆T (∆T =T1-Ts).
∆T
∆T>2℃
-3℃≤∆T≤2℃
∆T<-3℃
• The louver operates same as in relevant mode.
• If the machine changes running mode to auto mode,
it will choose running mode again.
• If the machine switches mode between heating and
cooling, the compressor will keep stopping for certain
time and then choose running mode according to
T1-Ts.
• If the setting temperature is modified, the machine will
choose running mode again.
1.8

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.
1.9

Timer Function

• The timing range is 24 hours.
• Timer On. The machine turns on automatically at the
 Page 18 
Running mode
Cooling
Fan-only
Heating*
preset time.
• Timer Off. The machine turns off automatically at the
preset time.
• Timer On/Off. The machine turns on automatically at
the preset On Time, and then turns off automatically
at the preset Off Time.
• Timer Off/On. The machine turns on automatically at
the preset Off Time and then turns off automatically at
the preset On Time.
• The timer does not change the unit operation mode.
If the unit is off now, it does not start up immediately
after the "timer off" function is set. When the setting
time is reached, the timer LED switches off and the
unit running mode remains unchanged.
• The timer uses relative time, not clock time
1.10 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 1°C (to not
higher than 30°C) every hour. After 2 hours, the
temperature stops rising and the indoor fan is fixed
at low speed.
• When heating, the temperature decreases 1°C(to
not lower than 17°C) every hour. After 2 hours, the
temperature stops decreasing and the indoor fan is
fixed at low speed. Anti-cold wind function takes
priority.
• Entering shutdown, changing mode or speed setting
cancels sleep mode..
• In this mode, the fan speed is forced into AUTO mode.
1.11 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
failure, will restore those setting automatically within 3
minutes after power returns.
• If the unit was in forced cooling mode, it will run in
this mode for 30 minutes and turn to auto mode with
temperature set to 24°C.
• If there is a power failure while the unit is running, the
compressor starts 3 minutes after the unit restarts. If
the unit was already off before the power failure, the
compressor starts 1 minute after the unit restarts.
1.12 Refrigerant Leakage Detection