Additional Refrigerant Charge Operation - Daikin R407C PLUS Service Manual

Test Operation
1.9

Additional Refrigerant Charge Operation

[Work procedure]
1. Conduct ordinary refrigerant charge.
!
2. Turn on the power switches of the indoor and outdoor units, and fully open the gas-side stop
3. Set the service mode.
In service mode 1, press the "MODE" button for 5 seconds to
enter service mode 2.
Press the "SET" button to set the LED indicators to the
"additional refrigerant charge operation" indication.
Press the "RETURN" button.
Press the "SET" button to set the LED indicators as shown at
right.
Press the "RETURN" button to end the setting operation.
Press the "RETURN" button again to start operation.
Low pressure level is indicated during
operation.
Operation ends (after 30 minutes).
(Pressure level immediately before is indicated by flashing
LEDs.)
Push "Mode" button once to complete additional refrigerant
change.
4. The refrigerant charge is completed when the specified amount of refrigerant is added. If the
5. Disconnect the refrigerant charge hose, then fully open the liquid-side stop valve.
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With the outdoor unit in non-operating condition, charge refrigerant from the liquid-side stop
valve service port.
(Keep the stop valves on both liquid and gas sides closed.)
Conduct the following operation only when the entire amount of refrigerant could not
be charged with the compressor in non-operating condition (otherwise equipment
damage can result).
valve.
(Keep the liquid-side stop valve closed.)
refrigerant charge operation is not completed in 30 minutes, make the settings again and
restart the operation for another 30 minutes.
(When the Confirmation button is pressed during additional refrigerant charge operation, the
operation stops.)
Higher than 3.5k
3.5k or less
2.5k or less
1.5k or less
This LED indication shows that the
operation stopped with pressure
level at [2.5 k or lower].
Test Operation R407C PLUS Series Heat Recovery System
Si33-105
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