Daikin VRV III-S RXYMQ6PV4A Service Manual page 84

SiME34-608
1.1.3 Check Operation
* During check operation, mount front panel to avoid the misjudging.
* Check operation is mandatory for normal unit operation.
(When the check operation is not executed, alarm code "U3" will be displayed.)
Press and hold the TEST
OPERATION button (BS4) on
outdoor unit PC board for 5
seconds.
Check on operation
On completion of test operation, LED on outdoor unit PC board displays the following.
H3P ON: Normal completion
H2P and H3P ON: Abnormal completion
Malfunction code
In case of an alarm code displayed on remote controller:
Malfunction
Nonconformity during installation
code
The shutoff valve of an outdoor unit is left
closed.
E3
Refrigerant overcharge.
The shutoff valve of an outdoor unit is left
closed.
E4
Insufficient refrigerant.
Refrigerant overcharge.
The shutoff valve of an outdoor unit is left
closed.
F3
Insufficient refrigerant.
F6 Refrigerant overcharge
U2 Insufficient supply voltage
If a check operation has not been
U3
performed.
U4 No power is supplied to an outdoor unit.
UA If no dedicated indoor unit is being used.
The shutoff valve of an outdoor unit is left
closed.
UF
If the right indoor unit piping and wiring are
not properly connected to the outdoor unit.
If the interunit wiring has not be connected
UH
or it has shorted.
Test Operation

The test operation is started automatically.
 The following judgements are conducted within 15 minutes(about 30
minutes at the maximum).

2"Check for wrong wiring"

2"Check stop valve for not open"

2"Pipe length automatic judgement"

The following indications are conducted while in test operation.

2LED lamp on outdoor unit PC board

2Remote controller


→
Open the gas-side shutoff valve and the liquid-side shutoff valve.
Recalculate the required amount of refrigerant from the piping
length and correct the refrigerant charge level by recovering any
excessive refrigerant with a refrigerant recovery machine.
Open the gas-side shutoff valve and the liquid-side shutoff valve.
Check if the additional refrigerant charge has been finished
correctly.
Recalculate the required amount of refrigerant from the piping
length and add an adequate amount of refrigerant.
Recalculate the required amount of refrigerant from the piping
length and correct the refrigerant charge level by recovering any
excessive refrigerant with a refrigerant recovery machine.
Open the gas-side shutoff valve and the liquid-side shutoff valve.
Check if the additional refrigerant charge has been finished
correctly.
Recalculate the required amount of refrigerant from the piping
length and add an adequate amount of refrigerant.
Recalculate the required amount of refrigerant from the piping
length and correct the refrigerant charge level by recovering any
excessive refrigerant with a refrigerant recovery machine.
Check to see if the supply voltage is supplied properly.
Perform a check operation.
Turn the power on for the outdoor unit.
Check the indoor unit. If it is not a dedicated unit, replace the
indoor unit.
Open the gas-side shutoff valve and the liquid-side shutoff valve.
Make sure that the right indoor unit piping and wiring are properly
connected to the outdoor unit.
Make sure the interunit wiring is correctly attached to terminals
(X2M) F1/F2 (TO IN/D UNIT) on the outdoor unit circuit board.
H2P flickers (test operation)
Indicates "UNDER CENTRALIZED CONTROL"
on upper right.
Indicates "TEST OPERATION" on lower left.
Check the indoor unit remote controller for
abnormal display and correct it.
Remedial action
Test Operation










(V3057)
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