Item
12. Test
operation
Operation flow and applicable data, etc.
When keeping [
OPERATION
] button pressed for
10 seconds or more, the temporary [COOL] operation
is performed.
Description
1) When pressing [OPERATION] button, the
previous setting operation starts.
2) When keeping [OPERATION] button pressed
for 3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
3) When keeping [OPERATION] button pressed
for 10 seconds or more, “Pi” sound is
heard and the test [COOL]
operation starts.
4) If the filter lamp goes on, press [OPERTION]
button to go off the filter lamp, and then
press [OPERTION] button again.
5) To stop the test operation, press
the button again.
Filter lamp ON
Press [OPERATION] button.
Did you press [OPERATION] button
for 3 seconds or more?
Did you press [OPERATION] button
for 10 seconds or more?
Switch to [AUTO RESTART] control.
YES
YES
NO
NO
NO
YES
Previous setting
operation
Test [COOL] Operation
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.
Td value
117°C
1
05
°C
10
3
°C
10
0
°C
9
3
°C
Control operation
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
If the operation is performed with lower speed than one
commanded by the serial signal, speed is slowly raised
up to the commanded speed.
Operates with speed commanded by the serial signal.
13. Discharge temperature control
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