Daikin FDMA125AV16 Installation Manual page 37

• Never perform a test operation with the discharge piping thermistor(R2T) and suction piping thermistor(R3T)
removed, as this might break the compressor.
• If the technician must leave the outdoor unit for some reason, switch places with another installation technician
or close the plates. (It may cause electric shocks.)
( HOW TO T E S T O PER A T I O N) Af t er the indoo _ r a � d outdo o r unit in _ s tallati on, b E: sure to pe
.
1. Open the stop valve cover and check that the liquid and gas sides of the stop valves are open.
<Be sure to close the front plate before the operation (there is a risk of electric shock)>
Note: After doing an air-purge with a vacuum pump, the refrigerant pressure may not rise even if the stop
valves are opened. This is because the refrigerant piping path is closed off by the outdoor unit
electronic expansion valve, etc. There are no problems if the unit is run.
2. Attach the stop valve cover to the outdoor unit and turn the power on at least 6 hours before operating the
outdoor unit to protect the compressor.
3. Set to COOLING operation with the remote controller.
4 Perform the test operation
• When doing trial operation, it may take about 1 minute until the compressor begins to function, but this is not abnormal.
• When using the system the first time after installation, even if heating operation is selected, cooling operation will take place
for about 3 to 5 minutes.
Thereafter, it will change to heating operation, but this is not abnormal.
(In this case, the remote controller display will continue to display
"heating operation.") This is in order to detect if someone has forgotten
to open the stop valve during trial operation.
• If the outside air temperature is about 24
operation is set, the system may not operate, but this is not abnormal.
5 . Operate normally.
6. Confirm function of the indoor and outdoor units according to the
operation manual.
( MALFUNC T I O N DIAGN O SIS )
• At the time of a test run, when the following malfunction code is displayed
on remote control, the fault of installation construction can be considered.
Malfunction code
[E 3 ] [E5] [ U 0] [ L 8]
[E 3 ] [E5] [ L 4] [ L 8]
[ U 1 ]
[ U 2 ]
[ U 4] [ UF J
[UA]
NO INDICATION
• When malfunction codes other than the above are displayed on remote control, considering that the failure of
between an indoor and an outdoor unit may have.
F or the malfunction codes, please refer to the indoor unit's installation manual or outdoor service manual.
(A malfunction code has what has a display according to the form of the interior of a room and an outdoor unit,
and the thing which is not.)
• The followings can be considered causes when the breaker for power supply trips.
- The capacity of a breaker for power supply is smaller than the required capacity of the leakage circuit breaker.
- The leakage circuit breaker is not compatible to the higher harmonic wave.
• In case of already checking all equipment that not have any problem, but found air conditioner not cooling.
Please re-che�k Motor_ operate valve coil not tighten or remove for 1
I
T o persons incharge of piping work and electric work
• Please check having attached the front board and the piping cover af t er a test run end when giving production over to customer.
Lt.WARNING
. the test operation In accordance with the following procedure.
°
C or more, even if HEATING
Installation error
A failure of a stop valve to open
Closing of an air passage
Missing phase, negative phase
Power supply unbalancing
Incorrect connection of field wiring Correction of wiring
Connection of incompatible
indoor unit
Mistake wiring or not connect
wiring of power supply, indoor,
outdoor, field wiring between
indoor unit
Lt.
CAUTION
I
36
rf orm
It turns until it removes
a valve lid and stops to
a counter clockwise rotation
by a 5mm hexagonal wrenches
C
Q)
a.
0
<Gas side>
Remedial action
"Open" operation of a stop valve
Removing closing thing from air passage
2 Phase of power supply 3 Phase
{L 1, L2, L3 Phase) are replaced
U nbalanced dissolution
Connect appropriate indoor unit
(Refer to the catalogue)
To correct wiring or connect correctly
checking. If normally please re-confirm
st