Temporary Operation; Discharge Temperature Control; High Pressure Control - Toshiba RAS-24J2KVG-UA Service Manual

Item Operation flow and applicable data, etc.
10. Temporary Pressing [RESET] button starts the temporary opera-
operation tion of [AUTO] operation. When keeping [RESET]
button pressed for 10 seconds or more, the temporary
[COOL] operation is performed.
Press RESET button.
Did you press [RESET] button
for 3 seconds or more?
YES
Did you press [RESET] button
for 10 seconds or more?
NO
Switch to [AUTO RESTART] control.

11. Discharge temperature control

Td value
Judges as an error and stops the compressor.
117°C
Reduce the compressor speed.
115°C
Reduce slowly compressor speed.
106°C
Keeps the compressor speed.
103°C
If the operation is performed with lower speed than one
commanded by the serial signal, speed is slowly raised
up to the commanded speed.
96°C
Operates with speed commanded by the serial signal.

12. High pressure control

Cooling Heating
(TE) (TC)
62°C
63°C
63°C 57°C
61°C
55°C
59°C 53°C
55°C 49°C
NO
Temporary [AUTO] operation
YES
Temporary [COOL] Operation
Control operation
Control operation
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FILE NO. SVM-19002
Description
1) When pressing [RESET] button, the
temporary [AUTO] operation starts.
2) When keeping [RESET] button pressed
for 3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
3) When keeping [RESET] button pressed
for 10 seconds or more, "Pi" sound is
heard and the temporary [COOL]
operation starts.
4) To stop the temporary operation, press
the button again.
1. Purpose
This function detects error on the
refrigerating cycle or error on the com-
pressor, and performs protective control.
2. Operation
• Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.
1. Purpose
This function detects error on the
refrigerating cycle or error on the com-
pressor, and performs protective control.
2. Operation
- TE or TC sensor control
- Control of the compressor speed The
speed control is performed as described in
the left table.
- High pressure switch control compressor
are shut down when discharge pressure
(Pd) reaches or exceeds 4.15
- The compressor restart prevention timer
(3 min) is set, and the control terminated.
MPa
+0
-0.3