Daikin RZQ18PVJU Installation Manual page 17

<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 units individually. For that purpose, perform
the normal operation using the remote controller after fi nish-
ing 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.)
• 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.)
• Run the indoor unit one by one in turn, and confi rm that the
corresponding outdoor unit is running.
• 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 units may continue to operate for a further
3 minutes.
• If the system has not undergone the check operation by the
test operation button since it was fi rst installed, a malfunc-
tion code "U3" is displayed.
In this case, perform the check operation by referring to
"9-1 Power on and check operation".
English
When a malfunction code is displayed in the remote
controller
(Check a malfunction code in the remote controller connected
to the indoor unit.)
Malfunction
Cause
code
The stop valves in
the outdoor unit
remain closed.
E3
The refrigerant is
overcharged.
The stop valves in
the outdoor unit
remain closed.
The operation
mode on the
remote controller
was changed
before the check
E4
operation.
F3
The refrigerant is
insuffi cient.
The refrigerant is
F6
overcharged.
The check
U3 operation has not
performed.
The power is not
U4 supplied to the
outdoor unit.
Improper type of
UA indoor unit is
connected.
The stop valves in
the outdoor unit
remain closed.
The piping and
wiring of the
indoor unit are
not connected
UF correctly to the
outdoor unit.
The operation
mode on the
remote controller
was changed
before the check
operation.
The transmission
wiring is not
UH
connected
correctly.
Solution
Open the stop valve on both the
gas and liquid lines.
Calculate again the required
amount of refrigerant to be charged
based on the piping length, recover
the refrigerant using the refrigerant
recovery device, then achieve
proper amount of refrigerant.
Open the stop valve on both the
gas side and liquid side.
Set the operation mode on all
indoor unit remote controllers to
"cooling."
• Check whether additional
refrigerant charge has been
fi nished correctly.
• Calculate again the required
amount of refrigerant to be
charged based on the piping
length, then charge additionally
proper amount of refrigerant.
Calculate again the required
amount of refrigerant to be charged
based on the piping length, recover
the refrigerant using the refrigerant
recovery device, then achieve
proper amount of refrigerant.
Perform the check operation.
Connect correctly the power supply
wiring of the outdoor unit.
Check the type of indoor unit
currently connected. If it is not
proper, replace it with proper one.
Open the stop valve on both the
gas and liquid lines.
Confi rm that the piping and wiring
of the indoor unit are connected
correctly to the outdoor unit.
Set the operation mode on indoor
unit remote controller to "cooling."
Connect correctly the transmission
wiring to the F1 and F2 (TO IN/D
UNIT) terminals on the PC board
(A1P) in the outdoor unit.
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