Daikin FTKS50BVMB, Service Manual

Page: 162 / 456

SiEN18-622 Test Operation
Test Operation 149
1.1.7 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.)
On completion of test operation, LED on outdoor unit PC board displays the following.
H3P ON: Normal completion
H2P and H3P ON: Abnormal completion
→
Check the indoor unit remote control for
abnormal display and correct it.
Malfunction code
In case of an alarm code displayed on remote control:
Check on oper a tion
(Q0 3 79)
Pre ss a nd hold the TE S T
OPERATION bu tton (B S 4) on
o u tdoor u nit PC b o a rd for 5
s econd s .
The te s t oper a tion i s s t a rted au tom a tic a lly.
The following j u dgement s a re cond u cted within 15 min u te s ( ab o u t 3 0
min u te s a t the m a xim u m).
2
“ Check for wrong wiring ”
2
“ Check s top v a lve for not open ”
The following indic a tion s a re cond u cted while in te s t oper a tion.
2
LED l a mp on o u tdoor u nit PC b o a rd H2P Blink s (te s t oper a tion)
2
Remote controller Indic a te s “ ” (d u ring centr a lized control) on
u pper right.
Indic a te s “ ” (te s t oper a tion) on lower left
(Only for S kyAir)
Malfunction
code
Nonconformity during installation Remedial action
E3
The stop valves in the outdoor unit remain
closed. Open the stop valve on both the gas side and liquid side.
E4
F3
The stop valves in the outdoor unit remain
closed. Open the stop valve on both the gas side and liquid side.
The operation mode on the remote control
was changed before the check run. Set the operating mode on all indoor unit remote controls to
“cooling”.
The refrigerant is insufficient.
•
Check whether additional refrigerant charge has been finished
correctly.
•
Calculate again the required quantity of refrigerant to be
charged based on the piping length, then charge additionally
proper quantity of refrigerant.
U3 The check operation is not performed. Perform the check operation.
U4 The power is not supplied to the outdoor unit. Connect correctly the power cable of the outdoor unit.
UA
Improper type of indoor units or BP units are
connected. Check the type of indoor units and BP units currently connected.
If they are not proper, replace them with proper ones.
UF
The stop valves in the outdoor unit remain
closed. Open the stop valve on both the gas side and liquid side.
The piping and wiring of the specified indoor
unit are not connected correctly to the
outdoor unit. Confirm that the piping and wiring of the specified indoor unit are
connected correctly to the outdoor unit.
The operation mode on the remote control
was changed before the check operation. Set the operating mode on all indoor unit remote controls to
“cooling”.
UH
The unit-to-unit wirings are not connected
correctly. Connect correctly the unit-to-unit wirings to the F1 and F2(TO BP
UNIT) terminals on the PC board (A1P) in the outdoor unit.