Control Function Of Indoor Unit - Toyotomi MUL12- FWCA Service Manual

Mul fwca series heat pumps
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2.2.7 Compressor overload protection
If the compressor overload switch is detected having movement, the indoor unit will display the corresponding
malfunction as it stops when the indoor temperature reaching set temperature. When the compressor stops for more than
3min and the compressor overload switch is reset, the unit will resume operation status automatically. If the protection
appears for more than 6 times (if the running time of the compressor is longer than 30min, the protection times record
will be cleared), the unit can not resume operation status automatically, but can resume running only after cutting off the
power and then putting through the power.
2.2.8 Drive Error
mode, and they will go to the piping test through the preset mode after they has run at the high fan speed for six minutes.
2.2.9 Refrigerant Recovery
The refrigerant can be recovered from either the indoor unit or the outdoor unit.
From the outdoor unit: it is available to recover the refrigerant from the outdoor unit by pressing "SW3"for a long
time period.
minute to go the refrigerant recovery mode by pressing three times the "LIGHT" button on the wireless controller in
three seconds with "F0"displayed.
How to quit the refrigerant recovery:
When the refrigerant recovery has started, it will quit when the "SW3" is pressed down for a long time period or
there is a signal from the wireless controller or it has run for ten minutes.
2.2.10 Forcible Defrosting
How to activate this function: when indoor unit runs under the heating mode and at 16
2.2.11 Switchover of the Defrosting Modes
Under the unit is under the "Off" status, if "H1" is not displayed on the wireless controller, then the unit will go to
the defrosting mode 1 when it is turned on through the wireless controller.
Under the unit is under the "Off" status, if "H1" is displayed on the wireless controller, the unit will go the
defrosting mode 2 when it is turned on through the wireless controller.
Under the unit is under the "Off" status, it is available to switch over the defrosting mode 1 and defrosting mode 2
by pressing the "Mode" and "Blow" buttons simultaneously.

2.3 Control Function of Indoor Unit

2.3.1 Running Mode
1.COOL
2.DRY
2.3.2 Basic Functions of the System
a. COOL Mode
Under this mode, the fan and swing function goes as the set conditions, and the set temperature range is
16
~30
.
b. DRY Mode
Under this mode, the fan will run at the low speed and the swing function is performed under the set conditions.
The set temperature range is 16~30
c. FAN Mode
Under this mode, only the fan of the indoor unit runs. And if the auto speed is set, the fan will run under the same
condition as the COOL mode.
d. HEAT Mode
a) Under this mode, the set temperature rang is 16
b) The defrosting symbol "H1" will be displayed when the defrosting signal is received from the outdoor unit.
e. AUTO Mode
a) When the ambient temperature is higher than 25
b) For the cooling and heating unit, if the ambient temperature is or lower than2 0
the HEAT mode.
c) When the indoor ambient temperature is higher than 20
under the AUTO or DRY mode will shift to the FAN mode, while the unit which starts to work under other mode will
3.HEAT
4.AUTO
5 FAN
.
~30
.
, the unit will run as the COOL mode.
but lower than 25
CONTROL
, it will activate the
(72
), the unit will run as
, the unit which starts to work
17

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This manual is also suitable for:

Mul18- fwcaMul24- fwcaMul12-fwcaMul18-fwcaMul24-fwca

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