Daikin FXFQ20BVEB - Symptom: the Compressor in the Outdoor Unit Does Not Stop after a Short Heating Operation

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18 | Troubleshooting

Installer and user reference guide

FXFQ20~125BVEB

VRV system air conditioner

4P561452-1B – 2021.07

18.1.14 Symptom: The compressor in the outdoor 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.

Main Page

Default Chapter2
- Table of Contents2
1 General Safety Precautions5
- About the Documentation5
  - Meaning of Warnings and Symbols5
- For the User6
- For the Installer7
2 About the Documentation13
- About this Document13
For the Installer14
3 About the Box15
- Overview: about the Box15
- Indoor Unit15
  - To Unpack and Handle the Unit15
  - To Remove the Accessories from the Indoor Unit16
4 About the Units and Options17
- Overview: about the Units and Options17
- Identification17
  - Identification Label: Indoor Unit17
- System Layout18
- Combining Units and Options18
  - Possible Options for the Indoor Unit18
5 Preparation19
- Overview: Preparation19
- Preparing the Installation Site19
  - Installation Site Requirements of the Indoor Unit19
- Preparing Refrigerant Piping22
  - Refrigerant Piping Requirements22
  - Refrigerant Piping Insulation23
- Preparing Electrical Wiring23
  - About Preparing Electrical Wiring23
6 Installation24
- Overview: Installation24
- Mounting the Indoor Unit24
- Connecting the Refrigerant Piping30
- Connecting the Electrical Wiring34
7 Configuration39
- Field Setting39
8 Commissioning42
- Overview: Commissioning42
- Precautions When Commissioning42
- Checklist before Commissioning43
- To Perform a Test Run43
- Error Codes When Performing a Test Run45
9 Hand-Over to the User46
10 Disposal47
11 Technical Data48
- Piping Diagram: Indoor Unit48
- Wiring Diagram48
  - Unified Wiring Diagram Legend48
For the User52
12 About the System53
- System Layout53
- Information Requirements for Fan Coil Units54
13 User Interface55
14 Before Operation56
15 Operation57
- Operating the System57
- Using the Dry Program58
  - About the Dry Program58
  - To Use the Dry Program58
- Adjusting the Air Flow Direction58
  - About the Air Flow Flap58
- Active Circulation Airflow59
  - To Start the Active Circulation Airflow59
16 Energy Saving and Optimum Operation61
17 Maintenance and Service62
- Precautions for Maintenance and Service62
- Cleaning the Air Filter, Suction Grille, Air Outlet and Outside Panels62
- Maintenance after a Long Stop Period65
- Maintenance before a Long Stop Period66
- About the Refrigerant66
- After-Sales Service and Warranty66
18 Troubleshooting69
- Symptoms that Are NOT System Malfunctions70

Daikin FXFQ20BVEB - Symptom: the Compressor in the Outdoor Unit Does Not Stop after a Short Heating Operation

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