Daikin FXFN50A2VEB, Инструкция по установке и эксплуатации, Страница: 12 / 28

8 Troubleshooting
Installation and operation manual
12
FXFN50~112A2VEB
CO ₂ Conveni-Pack: indoor unit
3P672850-1A – 2021.07
7.3 About the refrigerant
This product contains refrigerant gases.
Refrigerant type: R744 (CO
2
)
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Be aware that the refrigerant inside the system is
odourless.
WARNING
The R744 refrigerant (CO
2
) inside the unit is odourless,
non-flammable and normally does NOT leak.
ALWAYS install a CO
2
detector according to the
specifications of standard EN378.
If the refrigerant leaks in high concentrations in the room, it
may have negative effects on its occupants such as
asphyxiation and carbon dioxide poisoning. Ventilate the
room and contact the dealer where you purchased the unit
(see
"7.3.1 About refrigerant leak detection" [
4
12]).
Do NOT use the unit until a service person confirms that
the part from which the refrigerant leaked has been
repaired.
7.3.1 About refrigerant leak detection
In order to detect refrigerant leaks, a CO
2
refrigerant leak detector
(field supply) MUST be installed. The CO
2
refrigerant leak detector
may require annual tests. For more details, see the documentation
of the installed device.
In case a CO
2
refrigerant leak is detected
▪ the fan of the indoor unit is stopped to prevent the refrigerant from
being spread,
▪ the user interface displays error code A0 or U9 ( for the
Madoka; to display error codes, refer to the reference guide of the
Madoka),
▪ a warning sound will come from the user interface ( only for
Madoka with buzzer, see option list) or from another safety alarm
in combination with a CO
2
refrigerant leak detector (field supply).
Actions required by the user
1 Ventilate the room and immediately contact the dealer where
you purchased the unit. Do NOT use the unit before the fault is
fixed.
Actions required by the installer or the service person
INFORMATION
During detection of the refrigerant leakage, the contact
between terminals T1 and T2 disconnects. During normal
operation, the contact between terminals T1 and T2 is
closed (acting as a short circuit).
1 If field supplied stop-valves are NOT installed: Close the stop
valves of the gas and liquid pipe on the outdoor unit.
2 If field supplied shut-off valves are installed: If the refrigerant
leak to the room has stopped, you can use the air conditioner
for other rooms where the refrigerant leak did NOT occur.
3 Locate and repair the cause of the refrigerant leak. If
necessary, replace the indoor unit.
4 Refill the refrigerant if needed.
5 Perform manual power reset and resume operation.
NOTICE
After the refrigerant leakage is detected, the unit will send
a signal at regular intervals to confirm if the CO
2
concentration is at a safe level. Even when the CO
2
concentration is at a safe level, do NOT resume operation
before the fault is fixed and the refrigerant is refilled.
8 Troubleshooting
If one of the following malfunctions occur, take the measures shown
below and contact your dealer.
WARNING
Stop operation and shut OFF the power if anything
unusual occurs (burning smells etc.).
Leaving the unit running under such circumstances may
cause breakage, electrical shock or fire. Contact your
dealer.
The system MUST be repaired by a qualified service person.
Malfunction Measure
If a safety device such as a fuse, a
breaker or an earth leakage breaker
frequently actuates or the ON/OFF
switch does NOT function properly. Turn OFF all main power
supply switches to the
unit.
If water leaks from the unit. Stop operation.
The operation switch does NOT function
properly. Turn OFF the power
supply.
If the user interface displays or an
error code.
Notify your installer and
report the error code. To
display error codes, see
the reference guide of the
user interface.
The user interface displays error code
A0 or U9 (or ), the fan stops and you
can hear a warning sound from the user
interface (in case of Madoka) or from
another safety alarm in combination
with a gas detection device (if installed).
A refrigerant leak may be
detected (see
"7.3.1 About
refrigerant leak
detection"
[
4
12]).
If the system does NOT operate properly except for the above
mentioned cases and none of the above mentioned malfunctions is
evident, investigate the system in accordance with the following
procedures.
INFORMATION
Refer to the reference guide located on http://
www.daikineurope.com/support-and-manuals/product-
information/
for more troubleshooting tips.
If after checking all above items, it is impossible to fix the problem
yourself, contact your installer and state the symptoms, the complete
model name of the unit (with manufacturing number if possible) and
the installation date (possibly listed on the warranty card).
9 Relocation
Contact your dealer for removing and reinstalling the total unit.
Moving units requires technical expertise.
10 Disposal
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.