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8.5 Setting the master user interface
8.5.1 About setting the master user interface
8.5.2 To designate the master user interface (VRV DX and Hydrobox)
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10
NOTICE
▪
The movable limit of the flap is changeable. Contact your dealer for details. (only
for double-flow, multi-flow, corner, ceiling-suspended and wall-mounted).
▪
Avoid operating in the horizontal direction
settle on the ceiling or flap.
a
b
b
c
d
e
e
a VRV heat pump outdoor unit
b VRV direct expansion (DX) indoor unit
c BP box (required to connect Residential Air (RA) or Sky Air (SA) Direct Expansion
(DX) indoor units)
d Residential Air (RA) Direct Expansion (DX) indoor units)
e User interface (dedicated depending on indoor unit type)
f User interface (wireless, dedicated depending on indoor unit type)
When the system is installed as shown in the figure above, it is necessary to
designate one of the user interfaces as the master user interface.
The displays of slave user interfaces show
control) and slave user interfaces automatically follow the operation mode
directed by the master user interface.
Only the master user interface can select heating or cooling mode.
Indoor unit master allocation is determined as follows in special cases:
Case
VRV DX indoor unit combined
with Hydrobox unit
VRV DX indoor units combined
with RA DX indoor units
In case only VRV DX indoor units (and Hydrobox units) are connected to the VRV IV
system:
d
f
f
The operation mode is always forced by the
master user interface of the VRV DX indoor unit.
The Hydrobox unit cannot select the operation
mode (cooling/heating).
The operation mode is by default selected by
the master user interface of the RA DX indoor
unit. Contact your installer if you wish to know
which indoor unit type received the master
allocation.
8
Operation
|
. It may cause dew or dust to
(change-over under centralised
Description
Installer and user reference guide
31
- Quick Links:
- Error Codes: Overview
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Table of Contents
Troubleshooting
Need help?
Do you have a question about the VRV IV and is the answer not in the manual?
Questions and answers
Hi, kindly assist me with resolving the problem of the VRV IV series. It pops up from the remote control, and after checking the master and the slaves, both cannot identify their ID number. though the last error was e2. Someone messed up with the wiring, perhaps the communication cable. If we can see what cable goes to the first unit from the master, we have 16 units attached.
The troubleshooting steps for a Daikin VRV IV series system with an E2 error and communication issues between the master and slave units are:
1. Check Q1/Q2 Wiring: Inspect the wiring connections between the master and slave units at the Q1/Q2 terminals. Faulty or incorrect wiring can cause communication failures.
2. Verify Indoor-Outdoor Wiring: Ensure that the wiring between the indoor and outdoor units is correctly connected at the Q1/Q2 and F1/F2 terminals. Incorrect connections can lead to system malfunctions.
3. Check System Test Run: If the system test run was not executed or ended abnormally, perform the test run again to identify potential issues.
4. Confirm Indoor Unit Configuration: Ensure that the number of indoor units connected to the F1/F2 line does not exceed the system's capacity. Too many units can cause communication failures.
5. Inspect System Compatibility: Verify that the indoor units connected are compatible with the system (e.g., R410A, R407C, Hydrobox). Mixing incompatible units may cause communication issues.
6. Examine Outdoor Unit Wiring: Ensure that the interconnecting wiring between outdoor units in the same piping system is connected to the Q1/Q2 (Out Multi) terminals. Incorrect wiring to the F1/F2 terminals can cause system malfunctions.
Following these steps should help diagnose and resolve communication issues in the VRV IV system.
This answer is automatically generated