16 Commissioning
Installation and operation manual
23
EKVDX32~100A2VEB
VRV system air conditioner
4P555815-1A – 2021.08
16
Commissioning
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
16.1
Checklist before commissioning
After the installation of the unit, first check the items listed below.
Once all checks are fulfilled, the unit MUST be closed. Power-up the
unit after it is closed.
General
You read the complete installation and operation
instructions, as described in the
installer and user
reference guide
.
The
indoor unit
is properly mounted.
The
outdoor unit
is properly mounted.
Make sure
drain piping
is properly installed, insulated
and drainage flows smoothly. Check for water leaks.
Possible consequence:
Condensate water might drip.
The
ducting
is properly installed and insulated.
The
reducer(s)
is (are) properly installed and insulated.
The
refrigerant pipes
(gas and liquid) are installed
correctly and thermally insulated.
There are NO
refrigerant leaks
.
There are NO
missing phases
or
reversed phases
.
The system is properly
earthed
and the earth terminals
are tightened.
The
fuses
or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.
The
power supply voltage
matches the voltage on the
identification label of the unit.
There are NO
loose connections
or damaged electrical
components in the switch box.
There are NO
damaged components
or
squeezed
pipes
on the inside of the indoor and outdoor units.
The
stop valves
(gas and liquid) on the outdoor unit are
fully open.
VAM and EKVDX combination
ALL field settings related to VAM and EKVDX combination
are set correctly. See
22] for an
overview of the required settings.
User interface connected to EKVDX (not VAM).
P1/P2 connection between HRV-EKVDX is <100 m.
NO F1/F2 connection between VAM and EKVDX (only
P1/P2 connection allowed).
NO group control.
Power supply and electrical safety devices are shared
between VAM and EKVDX.
Each VAM unit is connected to only ONE EKVDX unit (via
duct and electrical connection). There is NO connection of
the VAM to any other indoor unit, linkage or multiple
EKVDX units.
ALL ducting is insulated on the side of VAM and EKVDX.
16.2
To perform a test run
INFORMATION
▪ Perform the test run according to the instructions in the
outdoor unit manual.
▪ The test run is only completed if there is no malfunction
code displayed on the user interface or the outdoor unit
7‑segment display.
▪ See the service manual for the complete list of error
codes and a detailed troubleshooting guideline for each
error.
NOTICE
Do NOT interrupt the test run.
INFORMATION
During a test run of the system or during maintenance, the
R32 safety needs to be deactivated. Refer to
deactivate the R32 safety system"
21].
Set the relevant field settings on EKVDX, then on VAM, before
performing the test run. See
22].
17
Troubleshooting
17.1
Solving problems based on error
codes
If the unit runs into a problem, the user interface displays an error
code. It is important to understand the problem and to take
measures before resetting an error code. This should be done by a
licensed installer or by your local dealer.
This chapter gives you an overview of most possible error codes and
their descriptions as they appear on the user interface.
INFORMATION
See the service manual for:
▪ The complete list of error codes
▪ A more detailed troubleshooting guideline for each
error
17.1.1
Error codes: Overview
In case other error codes appear, contact your dealer.
Code
Description
The R32 sensor has detected a refrigerant leak
/
Safety system error (leak detection)
VAM air flow rate dropped below the legal threshold
limit (for R32 application)
VAM air flow approaches legal threshold limit (for R32
application)
VAM warning for air flow rate drop (for R32
application)
R32 sensor malfunction
R32 sensor end of lifetime
