Temporary Operation; Pulse Motor Valve (Pmv) Control - Toshiba RAS-22SKV2-A1 Service Manual

Item
10. Temporary Pushing [RESET] button starts the temporary
operation operation of [AUTO] operation. When keeping
[RESET] button pushed for 10 seconds or more, the
temporary [COOL] operation is performed.
Filter lamp ON
NO
Did you push [RESET] button
for 3 seconds or more?
YES
Did you push [RESET] button
for 10 seconds or more?
NO
Switch to [AUTO RESTART] control.
11. Pulse motor This function controls throttle amount of the
valve (PMV) refrigerant in the refrigerating cycle.
control
According to operating status of the air
conditioner, this function also controls the open
degree of valve with an expansion valve with
pulse motor.
SH control
PMV open degree control
Stop by
remote controller
Power OFF
∗ SH (Super Heat amount) =
Ts (Temperature of suction pipe of the compressor) –
Tc or Te (Heat exchanger temperature at evaporation side)
∗ PMV: Pulse Motor Valve
Operation flow and applicable data, etc.
YES
Push RESET button.
NO
Temporary [AUTO] operation
YES
Temporary [COOL] Operation
Starting up
Initialize
Move to
initial position
Compressor ON
Td
release control
Room temp. sensor
(Ta sensor) control
Defrost
1) When pushing [RESET] button, the
temporary [AUTO] operation starts.
2) When keeping [RESET] button pushed for
3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
3) When keeping [RESET] button pushed for
10 seconds or more, "Pi" sound is heard
and the temporary [COOL] operation
starts.
4) If the filter lamp goes on, push [RESET]
button to go off the filter lamp, and then
push [RESET] button again.
5) To stop the temporary operation, push the
button again.
1) When starting the operation, move the valve
once until it fits to the stopper. (Initialize)
* In this time, "Click" sound may be heard.
2) Adjust the open degree of valve by super heat
amount. (SH control)
3) If the discharge temperature was excessively
up, adjust the open degree of valve so that it
is in the range of set temperature.
(Discharge temp. control)
4) When defrost operation is performed, the
open degree of valve is adjusted according to
each setup conditions during preparation for
defrost or during defrost operation
(4-way valve is inversed.).
5) To turn off the compressor while the air
conditioner stops by control of the thermostat
or by remote controller, adjust the open
degree of valve to the setup value before stop
of the compressor.
– 35 –
FILE NO. SVM-12002
Description