Daikin RZQ18PVJU (9) Installation Manual page 17

• In the check operation, the status of the outdoor unit is
checked, and incorrect wiring is checked for.
(1) • Close the front panel
of the outdoor unit.
• Turn ON the power to
the outdoor unit and
indoor unit.
(2) • Open the front panel of the outdoor unit.
• Check the LED on the PC board (A1P
and A2P) in the outdoor unit to see if the
data transmission is performed normally.
A1P A2P
LED display
(Default
status
before
delivery)
Outdoor
unit installed
LED display:
OFF
(3) • When performing the •
low-noise operation
(L.N.O.P.) or demand
(DEMAND) operation •
upon request from the
customer, perform the
setting using the
pushbutton switches (BS1 •
to BS5) on the PC board
(A2P) in the outdoor unit.
• Press each pushbut-
ton switch from the
opening of the
insulation cover.
(Do not remove the
insulation cover.)
(4) Confi rm that the stop
valves are open on both
the liquid and gas lines. If
they are closed, open them.
(5) Press and hold the test •
run button (BS4) for
5 seconds or more to start
the check operation.
For the details, refer to the
•
Check operation procedure
on the [Cautions on
service] label.
•
(6) After the check operation, make sure to close the front panel of
the outdoor unit.
English
Make sure to turn on the
power 6 hours before
starting operation for
Caution
supplying the power to
the crankcase heater.
The power is
supplied to the
outdoor unit.
Take due care
during the work to
prevent electric
shock.
Blinking
ON
The power is supplied to the
outdoor unit. Take due care during
the work to prevent electric shock.
Before using the pushbutton
switches (BS1 to BS5) for setting,
confi rm that the microcomputer
(SERVICE) monitor is lit.
For the setting method, refer to the
[Cautions on service] label attached
on the back of the front panel of the
outdoor unit. (Make sure to write the
contents of setting on the [Cautions
on service] label.)
Do not leave any stop
valve closed.
Caution
Otherwise the
compressor will fail.
When leaving the outdoor unit
during the check operation for
unavoidable reasons, ask another
installation worker to watch the
outdoor unit, or close the front panel.
The system operates the check
operation for about 15 minutes
(30 minutes maximum), then stops
automatically.
The system can start normal operation
about 5 minutes after the check
operation if the remote controller does
not display any malfunction code.
During the check operation, the
status under execution is indicated
on the remote controller.
<Cautions on check operation>
• If the air conditioner is started within about 12 minutes after
the power of the indoor/outdoor unit is turned on, the H2P
indicator lights and the compressor does not run.
Confi rm that the LED status is as shown in the table in (2) in
"9-1 Power on and check operation" before starting the air
conditioner.
• The air conditioner may require about 10 minutes maximum
until it can start the compressor after start of operation.
This period of time is required to homogenize the refrigerant
status, and does not indicate any failure.
• The check operation does not provide any means of check-
ing the indoor unit individually. For that purpose, perform the
normal operation using the remote controller after fi nishing
the check operation.
• The check operation is not available in any other mode such
as the recovery mode.
• Before running a check on the unit, changing the indoor
remote controller settings might cause the error code "UF" to
be displayed and prevent a proper check to be run.
9-2 Checks in normal operation
• After fi nishing the check operation, operate the air condi-
tioner normally.
(Heating is not available if the outside air temperature is
75 °F or more. Refer to the operation manual supplied
together with the unit.) (Heating is only available for RZQ-P
models.)
• Confi rm that the indoor and outdoor units are operating
normally.
(If a knocking sound is heard in the liquid compression of
the compressor, stop the air conditioner immediately and
energize the crankcase heater for a suffi cient period of time,
then start the operation again.)
• Check to see if cold (or hot) air is coming out of the indoor
unit.
• Press the fan direction button and fan speed control button
on the remote controller to see if the fan is operating nor-
mally.
<Cautions for normal operation check>
• Once stopped, the compressor will not start for about
5 minutes even if the "ON/OFF" button on the remote con-
troller is pressed.
• When the system operation is stopped by the remote con-
trol, the outdoor unit may continue to operate for a further
3 minutes.
• If the system has not undergone the check operation by the
test run button since it was fi rst installed, a malfunction code
"U3" is displayed.
In this case, perform the check operation by referring to
"9-1 Power on and check operation".
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