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NOTICE
Be sure to turn on the power 6 hours before operation in
order to have power running to the crankcase heater and
to protect the compressor.
3 Turn ON the operation switch of the outdoor unit.
4 Check the sight glass of the outdoor unit. If the refrigerant is
NOT in sealing state, charge extra refrigerant, but do NOT
exceed 10% of the determined additional refrigerant amount
(see
"6.7.3 To determine the additional refrigerant amount" on
page 20).
b
a
O
Sealing state (= sufficient refrigerant)
X
Insufficient refrigerant
a
Sight glass
b
Full of liquid
c
A little foam in the liquid
d
A lot of foam in the liquid
5 Check if the indoor unit blows cold air, and the room/showcase
temperature decreases.
6 Turn OFF the operation switch of the outdoor unit.
CAUTION
Do NOT turn OFF power by disconnecting the power
supply directly. Possible consequence:
▪ The auto restart function of the unit might automatically
resume
operation
reconnected.
▪ Compressor malfunction.
7 Check the test operation results on the outdoor unit 7‑LEDs
display.
Completion
Normal
completion
Abnormal
completion
Refer to
"8.4.3 Correcting after abnormal
completion of the test run" on page 29
actions for correcting the abnormality. When
the test operation is fully completed, normal
operation is possible.
8.4.3
Correcting after abnormal completion of
the test run
The test operation is only completed if no malfunction occurs. In
case of a malfunction, perform correcting actions as explained in the
error code table (see
"11.3.2 Error codes: Overview" on page
Carry out the test operation again and confirm that the abnormality is
properly corrected.
INFORMATION
If a malfunction occurs, a signal (220-240 V AC) is given to
the error output (X2M/E1/E2), and the H2P LED on the
main PCB is lit.
INFORMATION
Refer to the installation manual of the indoor unit for
detailed malfunction codes related to indoor units.
LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P442131-1 – 2016.03
c
d
after
the
power
supply
Description
to take
31).
8.4.4
Operating the unit
Once the unit is installed and test operation of outdoor unit and
indoor units is finished, the operation of the system can start.
9
Hand-over to the user
Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation on the url as earlier described in
this manual.
▪ Explain the user how to properly operate the system and what to
do in case of problems.
▪ Show the user what to do in relation to maintaining the unit.
10
Maintenance and service
NOTICE
Maintenance must be done by an authorised installer or
service agent.
We recommend to do maintenance at least once a year.
However, applicable legislation might require shorter
maintenance intervals.
NOTICE
In Europe, the greenhouse gas emissions of the total
is
refrigerant charge in the system (expressed as tonnes
CO
-equivalent) is used to determine the maintenance
2
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
10.1
Overview: Maintenance and
service
This chapter contains information about:
▪ Preventing electrical hazards when maintaining and servicing the
system
▪ The refrigerant recovery operation
10.2
Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
10.2.1
To prevent electrical hazards
When performing service to inverter equipment:
1 Do not open the electrical component box cover for 10 minutes
after the power supply is turned off.
9 Hand-over to the user
Installer and user reference guide
29
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Table of Contents
Troubleshooting
