Daikin VRV III REYQ16PY1

Other manuals for Daikin VRV III REYQ16PY1

Installation Manual22 pages

Questions and Answers

A
Amanda WilliamsAug 9, 2025
Why is my Daikin VRV III REYQ16PY1 not cooling or heating air well?
- A
  Andrea CarterAug 9, 2025
  If your Daikin Heating System isn't cooling or heating air effectively, several factors could be at play. Check for any obstructions blocking the air inlet or outlet of either the indoor or outdoor unit, and remove them if present. Ensure the air filters are clean; if clogged, clean them. Also, verify that the outdoor unit isn't enclosed. Make sure the temperature is set appropriately and the airflow rate isn't set to "LOW". Adjust the airflow rate to a suitable setting. Correct the air diffusion direction if it's improper. Ensure all windows and doors are tightly shut, and use curtains or shades to block direct sunlight. These steps should help restore optimal performance.
N
nicholassilvaAug 15, 2025
How to fix a Daikin VRV III REYQ16PY1 Heating System that does not start?
- S
  Sherry RichardAug 15, 2025
  If your Daikin Heating System doesn't start, check the following: First, inspect the fuse(s). If you find a blown fuse, turn off the power supply before replacing it. Next, examine the breaker(s). If any breaker knob is in the OFF position, turn the power supply ON. However, if a circuit breaker knob is in the tripped position, do not turn the power supply ON. Finally, if there was a power failure, restart the system once the power is restored.
H
hcarrollAug 21, 2025
What to do if Daikin VRV III REYQ16PY1 Heating System starts operation but makes an immediate stop?
- K
  Kayla HuntAug 21, 2025
  If your Daikin Heating System starts and then immediately stops, the issue might be due to a blocked air inlet or outlet on either the indoor or outdoor unit. Check for any obstructions and remove them. Another potential cause is clogged air filters. In this case, cleaning the air filters should resolve the problem.
R
Robert RobinsonAug 27, 2025
Why is COOL-HEAT selection disabled on my Daikin VRV III REYQ16PY1?
- C
  Casey BriggsAug 27, 2025
  If the COOL-HEAT selection is disabled on your Daikin Heating System and the remote controller displays "UNDER CENTRALIZED CONTROL", it means the system is under centralized control. To regain control, use a remote controller that offers the option to select cooling operation. If you have a COOL-HEAT selection remote controller, use it to choose between cooling and heating modes.
L
Lawrence CowanSep 1, 2025
How to stop odors coming out of my Daikin VRV III REYQ16PY1 Heating System?
- Q
  qgreenSep 2, 2025
  The inside of the indoor unit should be cleaned.

Summary

1. Introduction

1.1 Safety Cautions

Essential safety warnings and cautions for repair, handling, and operation of the equipment.

Part 3 Refrigerant Circuit

3. Refrigerant Flow for Each Operation Mode

Diagrams showing refrigerant flow during cooling, heating, simultaneous, and oil return operations.

Part 4 Function

2. Basic Control

3. Special Control

4. Protection Control

Mechanisms for protecting the system from high pressure, low pressure, and other abnormal conditions.

Part 5 Test Operation

1. Test Operation

Procedures for conducting test operations, including installation, prior checks, and initial startup.

3. Field Setting

Instructions for setting parameters directly on the unit or via remote controllers.

Part 6 Troubleshooting

1. Symptom-based Troubleshooting

A guide to diagnosing and resolving system issues based on observed symptoms.

2. Troubleshooting by Remote Controller

Methods for troubleshooting using the remote controller's diagnostic and inspection features.

3. Troubleshooting by Indication on the Remote Controller

Troubleshooting steps based on specific malfunction codes displayed on the remote controller.

Part 7 Appendix

5. Piping Installation Point

9. Method of Checking the Inverter’s Power Transistors and Diode Modules

Procedures for checking power semiconductors on the inverter PC board using a tester.

Part 8 Precautions for New Refrigerant (R-410 A)

1. Precautions for New Refrigerant (R-410 A)

General precautions for using the new R-410A refrigerant, covering performance, pressure, and composition.

Daikin VRV III REYQ16PY1 Specifications

General

Type	VRV III
Model	REYQ16PY1
Category	Heating System
Refrigerant	R410A
Operating Temperature (Cooling)	-5 to 46 °C
Cooling Capacity	16.0 kW
Heating Capacity	18.0 kW
Power Supply	380-415V / 50Hz / 3Ph