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Craig SmithSep 7, 2025
How to check unit combination on Daikin REYQ12T7Y1B multi system?
- RRobin WilsonSep 7, 2025
If you have a wrong unit combination in your Daikin Air Conditioner multi system, check if the unit types are compatible.
How to check unit combination on Daikin REYQ12T7Y1B multi system?
If you have a wrong unit combination in your Daikin Air Conditioner multi system, check if the unit types are compatible.
What to do if the Daikin REYQ12T7Y1B Air Conditioner discharge temperature is too high?
If your Daikin Air Conditioner displays a discharge temperature that is too high, try opening the stop valves. Also, verify and recharge the unit with the correct amount of refrigerant.
How to check wiring to Q1/Q2 on a Daikin REYQ12T7Y1B?
If you suspect faulty wiring to Q1/Q2 or between the indoor and outdoor units of your Daikin Air Conditioner, check the (Q1/Q2) wiring.
How to open a closed liquid stop valve on a Daikin REYQ12T7Y1B Air Conditioner?
If the liquid stop valve is closed on your Daikin Air Conditioner, open the liquid stop valve.
What to do if the Daikin REYQ12T7Y1B test run aborted?
If the Daikin Air Conditioner test run is aborted, re-execute the test run.
What to do if an error occurred during the Daikin Air Conditioner test run?
If your Daikin Air Conditioner experiences an error during the test run, re-execute the test run.
What to do if Daikin REYQ12T7Y1B system test run not yet executed?
If the Daikin Air Conditioner system test run has not been executed, execute a system test run.
What to do if Daikin REYQ12T7Y1B Air Conditioner test run aborted due to communication issues?
If the Daikin Air Conditioner test run is aborted due to communication issues, check the communication wires and then re-execute the test run.
What to do if my Daikin REYQ12T7Y1B has a refrigerant overcharge or stop valve closed?
If your Daikin Air Conditioner indicates a refrigerant overcharge or a closed stop valve, check the refrigerant amount and recharge the unit if necessary. Also, ensure that the stop valves are open.
How to troubleshoot a Daikin REYQ12T7Y1B with an activated high pressure switch?
If the high pressure switch is activated on your Daikin Air Conditioner, check the stop valve situation and inspect for any abnormalities in the field piping or airflow over the air-cooled coil.
General| Brand | Daikin |
|---|---|
| Model | REYQ12T7Y1B |
| Category | Air Conditioner |
| Language | English |
Details requirements for selecting and preparing the installation location.
Covers the necessary preparations for refrigerant piping installation.
Specifies requirements for refrigerant piping materials and cleanliness.
Guidance on selecting appropriate refrigerant pipe diameters based on capacity.
Covers the necessary preparations for electrical wiring.
Outlines required safety devices for electrical installation.
Guidelines and procedures for securely mounting the outdoor unit.
Detailed instructions for connecting the refrigerant piping system.
Procedures and guidelines for inspecting the refrigerant piping system.
Procedure for conducting leak tests on the refrigerant piping system.
Steps for removing moisture and air from the refrigerant piping.
Covers the process and precautions for charging refrigerant into the system.
Important safety and operational precautions before charging refrigerant.
Method for calculating the required additional refrigerant charge.
Detailed steps for charging refrigerant, including pre-charging.
Procedure for performing an automatic refrigerant charge.
Procedure for performing a manual refrigerant charge.
Covers the process of connecting field electrical wiring.
Process for manually configuring system settings via the unit's PCB.
Safety warnings and critical preparation steps before commissioning.
List of items to verify before starting the commissioning process.
Overview of the system test run procedure and its purpose.
Step-by-step guide for executing the system's automatic test run.
Procedure for resolving issues identified during the test run.
Procedure for diagnosing and resolving issues using error code tables.
Reference for identifying and understanding system error codes.
Reference table of error codes and their potential causes and solutions.
Description of normal operational symptoms that may appear unusual.
General instructions on how to operate the VRV IV system.
Details on different operating modes available for the system.
Instructions for activating and using the humidity control dry program.
Guidance on controlling and adjusting the unit's air flow direction.
Procedure for designating and configuring the master user interface.