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11
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Troubleshooting
Installer and user reference guide
39
RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10
11 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, electric
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 properly work.
Turn OFF the main power
switch.
If water leaks from the unit.
Stop the operation.
The operation switch does NOT work well.
Turn OFF the power supply.
If the user interface display indicates the unit
number, the operation lamp flashes and the
malfunction code appears.
Notify your installer and report
the malfunction code.
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.
Malfunction
Measure
If the system does not
operate at all.
▪
Check if there is no power failure. Wait until
power is restored. If power failure occurs during
operation, the system automatically restarts
immediately after power is restored.
▪
Check if no fuse has blown or breaker is activated.
Change the fuse or reset the breaker if necessary.
If the system goes into fan
only operation, but as soon
as it goes into heating or
cooling operation, the
system stops.
▪
Check if air inlet or outlet of outdoor or indoor
unit is not blocked by obstacles. Remove any
obstacles and make sure the air can flow freely.
▪
Check if the user interface display shows
(time
to clean the air filter). (Refer to
35] and "Maintenance" in the
indoor unit manual.)
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