Check Operation - Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual

SiBE18-821_C

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 " is displayed.)
Press and hold the TEST
OPERATION button (BS4) on
outdoor unit PCB for 5
seconds.
Check on operation
On completion of test operation, LED on outdoor unit PCB displays the following.
H3P ON: Normal completion
H2P and H3P ON: Abnormal completion → Check the indoor unit remote controller for error code
Error code Nonconformity during installation
The stop valve of the outdoor unit is left
closed.
E3
Refrigerant overcharged
The stop valve of the outdoor unit is left
closed.
E4
Refrigerant shortage
Refrigerant overcharged
The stop valve of the outdoor unit is left
F3
closed.
Refrigerant shortage
F6
Refrigerant overcharged
U2
Insufficient supply voltage
If a check operation has not been
U3
performed.
U4
No power is supplied to the outdoor unit.
UA
If no dedicated indoor unit is being used.
The stop valve of the 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 and Field Settings

The test operation is started automatically.
 The following judgments are conducted within 15 minutes (about 30
minutes at the maximum).

• "Check for wrong wiring"

• "Check stop valve for not open"

The following indications are conducted while in test operation.

• LED on outdoor unit PCB — H2P Blinks (test operation)

• Remote controller

(Only for SkyAir)


(R12943)
Open the gas-side stop valve and the liquid-side stop 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 stop valve and the liquid-side stop 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 stop valve and the liquid-side stop 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 stop valve and the liquid-side stop 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.
Indicates " " (during centralized control) on
upper right.
Indicates " " (test operation) on lower left
display and correct it.
Remedial action
Test Operation










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