Symptom: Dust Comes Out Of The Unit; Symptom: The Units Can Give Off Odours; Symptom: The Outdoor Unit Fan Does Not Spin; Symptom: The Display Shows "88 - Daikin VRV IV+ RYYQ8U7Y1B Series Installer And User Manual

10.2.12 Symptom: Dust comes out of the unit

10.2.13 Symptom: The units can give off odours

10.2.14 Symptom: The outdoor unit fan does not spin

10.2.15 Symptom: The display shows "88"

10.2.16 Symptom: The compressor in the outdoor unit does not stop after a short heating
operation

10.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped

10.2.18 Symptom: Hot air can be felt when the indoor unit is stopped

RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
When the unit is used for the first time in a long time. This is because dust has
gotten into the unit.
The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it
again.
During operation. The speed of the fan is controlled in order to optimise product
operation.
This is the case immediately after the main power supply switch is turned on and
means that the user interface is in normal condition. This continues for 1 minute.
This is to prevent refrigerant from remaining in the compressor. The unit will stop
after 5 to 10 minutes.
This is because the crankcase heater is warming the compressor so that the
compressor can start smoothly.
Several different indoor units are being run on the same system. When another
unit is running, some refrigerant will still flow through the unit.
10 Troubleshooting
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Installer and user reference guide
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