Daikin VRV IV Series - Symptom: the Heat Exchanger Unit Fan Does Not Spin; Symptom: the Display Shows 88; Symptom: the Compressor in the Compressor Unit Does Not Stop after a Short Heating Operation; Symptom: the Inside of an Compressor Unit Is Warm Even When the Unit Has Stopped

10 | Troubleshooting
Installer and user reference guide
44
RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
10.2.14 Symptom: The heat exchanger unit fan does not spin
During operation. The speed of the fan is controlled in order to optimise product
operation.
10.2.15 Symptom: The display shows "88"
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.
10.2.16 Symptom: The compressor in the compressor unit does not stop after a short heating
operation
This is to prevent refrigerant from remaining in the compressor. The unit will stop
after 5 to 10 minutes.
10.2.17 Symptom: The inside of an compressor unit is warm even when the unit has stopped
This is because the crankcase heater is warming the compressor so that the
compressor can start smoothly.
10.2.18 Symptom: Hot air can be felt when the indoor unit is stopped
Several different indoor units are being run on the same system. When another
unit is running, some refrigerant will still flow through the unit.