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SPECIAL INSTALLATION
SETTING
PUMP DOWN (Refrigerant collecting operation)
ERROR CONTENTS
(outdoor unit)
1. Make a TEST RUN in accordance with the in-
stallation instruction sheet for the indoor unit.
2. OUTDOOR UNIT LEDS
Error contents
Communication error
(Indoor unit - Outdoor unit)
Discharg pipe temperature sensor
Outdoor heat exchanger temperature sensor
Outdoor temperature sensor
Compressor temperature sensor
Heat sink temperature sensor
Pressure switch abnormal
IPM error
Compressor rotor position cannot detect
Compressor cannot operate
Outdoor fan abnormal (upper fan)
Outdoor fan abnormal (lower fan)
No error
LED
1 flash
2 flash
3 flash
4 flash
7 flash
8 flash
9 flash
12 flash
13 flash
14 flash
15 flash
16 flash
lighting
1. When the product is stopped:
When a malfunction occurs in the outdoor unit, the LED on
the circuit board lights to indicate the error. Refer to the fol-
lowing table for the description of each error according to the
LED.
Perform the following procedures to collect the refrigerant
when moving the indoor unit or the outdoor unit.
*When the pump down operation is repeated, temporarily disconnect
the power supply after opening the closed valves (both liquid and gas).
Reconnect the power supply after2-3minutesandperform the pump
down operation.
*When the start of the operation after pump down operation has been
completed, temporarily disconnect the power supply after opening the
closed valves (both liquid and gas).
Reconnect the power supply after 2-3 minutes and be sure to perform
a test operation for cooling.
1
2
3
4
2. When the product is operating:
1
2
3
4
Press the PUMP DOWN switch on the outdoor unit.
(The LED on the outdoor unit circuit board lights.)
Press the PUMP DOWN switch on the outdoor unit.
The LED on the outdoor unit circuit board lights, and
operation stops. At this point, recovery has not been
completed, so do not close the two- and three-way
valves.
The pump down operation (cooling operation) be-
gins right away. After oparation starts, close the
three-way valve (liquid).
The pump down operation (cooling operation) be-
gins after three minutes. Close the three-way valve
(liquid) after operation starts.
After2-3minutes, operation stops. Close the three-
way valve (gas) within one minute after operations
stops.
After 2 - 3 minutes, operation stops. Close the three-
way valve (gas) within one minute after operations
stops.
The LED will go out three minutes after it stops.Dis-
connect the power supply after confirming that the
LED has gone out.
The LED will go out three minutes after it stops. Dis-
connect the power supply after confirming that the
LED has gone out.
3-way valve
(Liquid)
3-way valve
(Gas)
2006.02.28 12
DANGER
This part (Choke coil) generates high voltages.
Never touch this part.
PUMP DOWNSW