Panasonic CU-8ME1XPK - Pump down Operation

Pump Down Operation PACD011001C2
560 Special Service Mode UM Combination “MA1R Series” Using R-407C
2. Pump Down Operation
2.1 Pump Down Operation
Pump down operation is carried out when refrigerant is moved to outdoor unit if the indoor unit is
necessary to disconnect or replacing. In this case, outdoor unit operates in the cooling mode and
indoor unit’s electronic expansion valves open for 30 minutes.
2.1.1 Method
1. Fully shut the liquid side stop valves. (Leave fully open the gas side stop valve)
2. Set to pump down mode in setting mode 2 as per table below and execute pump down
operation.
„
Outdoor unit operate for approximately 30 minutes.
3. After unit stopping, shut the stop valve of the gas pipe.
Setting of Pump Down Mode
Setting Method LED Display
H1P H2P H3P H4P H5P H6P H7P
Hold down the Mode button for 5 seconds to change to setting
Mode 2.
8777777
Push SET button and select LED display to “Pump down operation”.
8778887
Push the RETURN button.
8777779
Push SET button and select LED display as shown right.
8777797
Push the RETURN button twice to start operation.
8
9
7
9
7
7
7
7
7
7
8
7
7
7
During pump down operation, low pressure
level is displayed as shown right.
Over 0.343MPa
8888888
Below 0.343MPa
8877888
Below 0.245MPa
8877788
Below 0.147MPa
8877778
Pump down operation completed
„
Final pressure level is shown with blinking or H2P is shown ON.
8899999
Push MODE button once to complete this procedure.
8777787