Drying Mode; Forced Operation Function; Auto-Restart Function; Refrigerant Leakage Detection - Century B-VMH36SD-1 Service Manual

(ΔT =T1-Ts).
T1-Ts
Cooling
Fan only
Heating*
Heating*:
Indoor fan will run at auto fan of the
relevant mode.
The louver operates same as in relevant mode.
If the machine switches mode between heating
and cooling, the compressor will stop and then
choose mode according to T1-Ts.
If the setting temperature is modified, the
machine will choose running function again.

8.4.5 Drying mode

8.4.5.1 Indoor fan speed is fixed at breeze and
can't be changed. The louver angle is the
same as in cooling mode.
8.4.5.2 Low indoor room temperature
protection In drying mode, if room temperature
is lower than 10°C(50°F), the compressor will
stop and not resume until room temperature
exceeds 12°C(53.6°F).
8.4.5.3 Evaporator anti-freezing protection,
condenser high temperature protection and
outdoor unit frequency limit are active and the
same as that in cooling mode.
8.4.5.4 The outdoor fan operates the same as
in cooling mode.

8.4.6 Forced operation function

8.4.6.1 Enter forced operation function:
When the machine is off, pressing the touch
button will carry the machine to forced auto
mode. If pressing the button once again within
5 seconds, the machine will turn into forced
cooling mode.
Service Manual - VMH 9/12/18/24 SU & VMH30/36S D Series
In forced auto, forced cooling or any other
operation mode, pressing touch button will turn
off the machine.
8.4.6.2 In forced operation mode, all general
protections and remote control are available.
8.4.6.3 Operation rules:
Forced cooling mode:
The compressor runs at F2 frequency and
indoor fan runs as breeze. After running for 30
minutes. the machine will turn to auto mode as
24°C(75.2°F) setting temperature.
Forced auto mode:
The action of forced auto mode is the same as
normal auto mode with 24°C(75.2°F) setting
temperature.

8.4.7 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 as 24°C(75.2°
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
when restarting.

8.4.8 Refrigerant Leakage Detection

With this new technology, the display area will
show "EC" when the outdoor unit detects
refrigerant leakage.
8.4.9 8°C Heating (optional)
When the compressor is running, the indoor
fan motor will run without anti-cold air function.
When the compressor is off, the indoor
fan motor is off.
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