Mars DVH Series - Page 22

Service Manual - DVH 09/12/18/24 SF Series
Service Manual - DVH 09/12/18/24 SF Series
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8.4.5 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.
8.4.6 Forced operation function
Forced cooling mode:
The compressor and outdoor fan keep
running and the indoor fan runs at low
speed. After running for 30 minutes, AC will
turn to auto mode with 75°F setting
temperature.
Forced auto mode:
The action of forced auto mode is the same
as normal auto mode with 75°F setting
temperature.
When AC receives signals, such as switch
on, switch off, timer on, timer off, mode
setting, fan speed setting, sleeping mode
setting, follow me setting, it will discontinue the
forced operation.
8.4.7 Timer function
8.4.7.1 Timing range is 24 hours.
8.4.7.2 Timer on. The machine will turn
on automatically when reaching the setting
time.
8.4.7.3 Timer off. The machine will turn off
automatically when reaching the setting time.
8.4.7.4 Timer on/off. The machine will turn on
automatically when reaching the setting “on”
time, and then turn off automatically when
reaching the setting “off” time.
8.4.7.5 Timer off/on. The machine will turn off
automatically when reaching the setting “off”
time, and then turn on automatically when
reaching the setting “on” time.
8.4.7.6 The timer function will not change the
AC current operation mode. Suppose AC is off
now, it will not start up firstly after setting the
“timer off” function. And when reaching the
setting time, the timer LED will be off and the
AC running mode has not been changed.
8.4.7.7 The setting time is relative time.
8.4.7.8 The AC will quit the timer function when
it has malfunction.
8.4.8 Sleep function
8.4.8.1 The sleep function is available in
cooling, heating or auto mode.
8.4.8.2. Operation process in sleep mode is as
follow:
When cooling, the setting temperature rises 1°F
(under 80°F) every hour, 2 hours later the
setting temperature stops rising and the
indoor fan is fixed at low speed.
When heating, the setting temperature
decreases 1°F (no lower than 62°F) every one
hour, 2 hours later the setting temperature
stops rising and indoor fan is fixed at low speed.
(Anti-cold wind function has the priority). 8.4.8.3
Operation time in sleep mode is 7 hours. After 7
hours the AC quits this mode and turns off.
8.4.8.4 Timer setting is available
8.4.9 Auto-Restart function
The indoor unit is equipped with auto-restart
function, which is carried out through an
auto-restart module. In case of a sudden power
failure, the module memorizes the setting
conditions before the power failure. The unit will
resume the previous operation setting (not
including swing function) automatically after 3
minutes when power returns.
If the memorization condition is forced cooling
mode, the
unit will run in cooling mode for 30
minutes and turn to auto mode with 75°F
setting temp.
If AC is off before power off and AC is required
to start up now, the compressor will have 1
minute delay when power on. Other conditions,
the compressor will have 3 minutes delay on
restart.
8.4.10 Refrigerant Leakage Detection
With this new technology, the display area will
show “EC” when the outdoor unit detects
refrigerant leakage. This function is only
available in cooling mode.