Description Of Each Control Operation - Toyotomi GAG-A128GVR Service Manual

6.5 DESCRIPTION OF EACH CONTROL OPERATION

1. When the unit is energized, all the display marks will be shown and onl y
the power LED lights.
2. When the unit is turned on remotely, the power LED goes out while the
current setting running mode is displayed.
3. During defrosting, "H1" is displayed in "dual 8".
4. In normal situation, the setting temperature is displayed in "dual 8" place.
5. When the signal of displaying indoor temperature or outdoor temperatur e
is received from the controller, the corresponding temperature will be shown
in "dual 8" place. It resumes displaying setting temperature 5s later.
C
B
A
Indoor temperature-setting temperature
1. In this mode, the fan motor runs at low fan speed while swing works
according to setting state. The range of setting temperature is 16~30
(61~86¨H).
2. When outdoor malfunction or protection stoppage happen,
the indoor fan will remain the original running state and the error LED will light.
1. In this mode, the indoor fan may run at high, medium, low and automatic
speed. The compressor, outdoor fan and 4-way valve all stop running.
2. In this mode, the range of setting temperature is 16~30
1. Heating mode
When setting temperature-indoor temperature<= -1.5
the unit will stop heating. Both outdoor fan and indoor fan will stop later.
When setting temperature-indoor temperature>-1.5
certain period, the unit will start heating. In that case, indoor fan, outdoor fan
and compressor will start running. The indoor fan works according to the
anti-cold air.
* In this mode, the range of setting temperature is 16~30
A
Setting temperature- indoor temperature
B
C
2. Protection function: in heating mode, when the compressor stops as
a result of malfunction, the indoor fan blows residual heat.
3. Defrosting control: when the defrosting signal is revived, the
defrosting mark H1 will be shown. The e-heater and indoor fan stop.
22
* Anti-cold air function
The rotational speed of indoor electromotor is decided based on the
indoor pipe temperature. The indoor fan can run at low speed or stop
running. This function will terminate after the unit runs for 3min or the
pipe temperature reached certain value.
During heating, if the indoor pipe temperature is lower than certain value.
The running speed of indoor fan will decrease automatically base on the
pipe temperature and ensure that the outlet air is hot.
* Residual heat blowing function
During heating, when the stopping condition for the compressor is reached,
the compressor and the outdoor fan motor stop running while the upper and
lower air deflector rotate to level L. the indoor fan will stop after running for
60s at setting speed.
In this mode, the system selects the running mode (cooling, heating, and fan)
automatically according to the ambient temperature. The display shows the
actual running mode and setting temperature. There will be 30s delay for
mode conversion. The protection function is the same as that of other modes.
1. When T amb>=25o C, the cooling mode is selected.
2. for heat pump unit: when Tamb<=22o C, the unit runs in heating mode
3. for cooling only unit: when Tamb < 22o C, the unit runs in fan mode.
o 4. When 22o C <T indoor amb< 25o C, upon initial startup, the unit will
C
o
C (61~86¨H).
o
C,
o
C and it lasts for a
In auto fan speed mode, the rotational speed of the fan for indoor unit is
decided by the differential temperature between ambient temperature and
setting temperature. In dehumidifying mode, the automatic fan speed is
forced to be low.
o
C (61~86¨H).
enter auto mode and run in automatic fan mode. If the other mode
changes into auto mode, the previous running mode will remain.
Cooling Heating
operation operation
With compressor capacity supplied
With no compressor capacity supplied
No. of
Super-high
jumper
fan speed
cap
Rotational speed
1300
during cooling
1 09K
Rotational speed
1300
during heating
Rotational speed
1350
during cooling
2 12K
Rotational speed
1350
during heating
Function and Control
.
Cooling
operation
Low fan
High fan
Medium
speed
speed fan speed
1100 900 700
1140 980 820
1150 950 750
1190 1020 850