Check Operation - Daikin FCQ18PVJU Service Manual

Test Operation

1.1.3 Check Operation

* During check operation, position the front panel in full view so as to avoid incorrect readings.*
Check operation is mandatory for normal unit operation.
(When the check operation is not executed, alarm code "
Press and hold the TEST
button (BS4) on outdoor unit
P.C.B. for 5 seconds.
Check on operation
On completion of test operation, LED on outdoor unit P.C.B. displays the following.
H3P ON: Normal completion
H2P and H3P ON: Abnormal completion → Check the indoor unit remote controller for
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
F3 closed.
Insufficient refrigerant
F6
Refrigerant overcharge
U2
Insufficient supply voltage
If a check operation has not been
U3
performed.
43
ì
The test operation is started automatically.
ï
The following judgements are conducted within 15 minutes(about 30
minutes at the maximum).
ï
• Check for incorrect wiring.
ï
• Check that the stop valve is closed.
ï
• The system performs a self check to automatically determine pipe
ï
length.
ï
The following indications are conducted while in test operation.
ï
• LED lamp on outdoor unit P.C.B.
ï
• Remote controller
î
(For normal completion)
(For abnormal completion)
Indicates "Under Centralized Control" on upper
right.
abnormal display and correct it.
H1PH2PH3PH4PH5PH6PH7P
h h k h h h h
h k k h h h h
Remedial action
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.
SiUS28-902_a
U3
" will be displayed.)
H2P flickers (test operation)
Test Operation
ü
ï
ï
ï
ï
ï
ï
ï
ï
þ