Troubleshooting - Daikin VRV II Series Design, Installation & Testing Instructions

Troubleshooting

9. Troubleshooting

If one of the following malfunctions occur, take the measures shown below and contact
your Daikin dealer.
The system must be repaired by a qualified service person.
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RXYQ series
If the system does not properly operate except for the above mentioned cases and none
of the above mentioned malfunctions is evident, investigate the system according to the
following procedures.
1. If the system does not operate at all;
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2. If the system goes into fan only operation, but as soon as it goes into heating or cooling
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3. The system operates but cooling or heating is insufficient;
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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;
Measure: Turn off the main power switch.
If water leaks from unit;
Measure: Stop the operation.
If the display " ", the unit number and the operation lamp flash and the malfunction
TEST
code appears;
1. Inspection display
2. Indoor unit number in which a malfunction occurs
3. Operation lamp
4. Malfunction code
Measure: Notify your Daikin dealer and report the malfunction code.
Check if there is no power failure.
Wait until power is restored. If power failure occurs during operation, the system
automatically restarts immediately after the power supply is recovered.
Check if no fuse has blown or breaker has worked. Change the fuse or reset the breaker if
necessary.
operation, the system stops;
Check if air inlet or outlet of outdoor or indoor unit is not blocked by obstacles.
Remove any obstacle and make it well-ventilated.
Check if the remote controller display shows "
chapter "Maintenance" in the indoor unit manual.)
Check if air inlet or outlet of outdoor or indoor unit is not blocked by obstacles.
Remove any obstacle and make it well-ventilated.
Check if the air filter is not clogged. (Refer to the chapter "Maintenance" in the indoor unit
manual.)
Check the temperature setting.
Check the fan speed setting on your remote controller.
Check for open doors or windows. Shut doors and windows to prevent wind from coming in.
Check if there are too many occupants in the room during cooling operation.
REYQ series
" (time to clean the air filter). (Refer to the
Si39-303
Operation Manual