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1 About the documentation
14.2.8
Symptom: The user interface display reads "U4" or
"U5" and stops, but then restarts after a few minutes. 30
14.2.9
Symptom: Noise of air conditioners (Indoor unit, heat
exchanger unit) ........................................................... 30
14.2.10 Symptom: Noise of air conditioners (Indoor unit,
compressor unit, heat exchanger unit)........................ 31
14.2.11 Symptom: Noise of air conditioners (compressor
unit, heat exchanger unit) ........................................... 31
14.2.12 Symptom: Dust comes out of the heat exchanger
unit .............................................................................. 31
14.2.13 Symptom: The units can give off odours..................... 31
14.2.14 Symptom: The heat exchanger unit fan does not spin 31
14.2.15 Symptom: The display shows "88".............................. 31
14.2.16 Symptom: The compressor in the compressor unit
does not stop after a short heating operation ............. 31
14.2.17 Symptom: The inside of an compressor unit is warm
even when the unit has stopped ................................. 31
14.2.18 Symptom: Hot air can be felt when the indoor unit is
stopped ....................................................................... 31
15 Relocation
16 Disposal
1
About the documentation
1.1
About this document
Target audience
Authorised installers + end users
For the installer
2
About the box
2.1
Compressor unit
2.1.1
To remove the accessories from the
compressor unit
1 Remove the accessories (part 1).
a
1×
2 Remove the service cover. See
unit" on
page 7.
3 Remove the accessories (part 2).
g
Installation and operation manual
4
b
c
d
e
1×
1×
1×
1×
"5.1.1 To open the compressor
h
i
j
1×
1×
1×
1×
INFORMATION
This appliance is intended to be used by expert or trained
users in shops, in light industry and on farms, or for
commercial use by lay persons.
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪ General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: Paper (in the accessory bag of the compressor unit)
▪ Compressor unit installation and operation manual:
▪ Installation and operation instructions
▪ Format: Paper (in the accessory bag of the compressor unit)
▪ Heat exchanger unit installation manual:
▪ Installation instructions
31
▪ Format: Paper (in the accessory bag of the heat exchanger
31
unit)
▪ Installer and user reference guide:
▪ Preparation
of
reference data,...
▪ Detailed step-by-step instructions and background information
for basic and advanced usage
▪ Format: Digital files on
and-manuals/product-information/
Latest revisions of the supplied documentation may be available on
the regional Daikin website or via your dealer.
The original documentation is written in English. All other languages
are translations.
a
General safety precautions
b
Compressor unit installation and operation manual
c
Fluorinated greenhouse gases label
d
Multilingual fluorinated greenhouse gases label
e
Screw (for shield of transmission wiring)
f
Cable tie
g
Gas piping accessory (circuit 1: to heat exchanger unit)
(Ø19.1 mm)
h
Liquid piping accessory (circuit 1: to heat exchanger unit)
(Ø12.7 mm)
i
Liquid piping accessory (circuit 2: to indoor units)
(Ø9.5 mm)
j
Gas piping accessory (circuit 2: to indoor units)
(Ø15.9 mm)
f
3×
2.1.2
To remove the transportation stay
NOTICE
If the unit is operated with the transportation stay attached,
abnormal vibration or noise may be generated.
The transportation stay installed over the compressor leg for
protecting the unit during transport must be removed. Proceed as
shown in the figure and procedure below.
1 Slightly loosen the fixing nut (a).
2 Remove the transportation stay (b) as shown in the figure
below.
3 Tighten the fixing nut (a) again.
the
installation,
technical
specifications,
http://www.daikineurope.com/support-
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
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Troubleshooting
