Daikin AZQS100B7Y1B, Installation Manual

Page: 10 / 16

5 Commissioning
Installation manual
10
AZQS100~14 AZQS100~140B7Y1B
Split system air conditioners
4P385528-1C – 2016.10
c Interconnection cable
d Liquid pipe
e Liquid pipe insulation
f Finishing tape
2 Install the service cover.
4.6.2 To check the insulation resistance of the
compressor
NOTICE
If, after installation, refrigerant accumulates in the
compressor, the insulation resistance over the poles can
drop, but if it is at least 1 MΩ, then the unit will not break
down.
▪ Use a 500 V mega-tester when measuring insulation.
▪ Do not use a mega-tester for low-voltage circuits.
1 Measure the insulation resistance over the poles.
If Then
≥1 MΩ Insulation resistance is OK. This procedure
is finished.
<1 MΩ Insulation resistance is not OK. Go to the
next step.
2 Turn ON the power and leave it on for 6 hours.
Result: The compressor will heat up and evaporate any
refrigerant in the compressor.
3 Measure the insulation resistance again.
5 Commissioning
NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.
5.1 Checklist before commissioning
Do NOT operate the system before the following checks are OK:
You read the complete installation instructions, as
described in the
installer reference guide .
The indoor units are properly mounted.
In case a wireless user interface is used: The indoor unit
decoration panel with infrared receiver is installed.
The outdoor unit is properly mounted.
The following field wiring has been carried out according
to this document and the applicable legislation:
▪ Between the local supply panel and the outdoor unit
▪ Between the outdoor unit and the indoor unit
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.
The insulation resistance of the compressor is OK.
There are NO damaged components or squeezed
pipes on the inside of the indoor and outdoor units.
There are NO refrigerant leaks .
The correct pipe size is installed and the pipes are
properly insulated.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
5.2 To perform a test run
NOTICE
Do not interrupt the test run.
INFORMATION
In case you have to redo the test run, see the service
manual.
1 Perform introductory steps.
# Action
1 Open the liquid stop valve (A) and gas stop valve (B)
by removing the stem cap and turning
counterclockwise with a hex wrench until it stops.
A B
2 Close the service cover to prevent electric shocks.
3 Turn ON power for at least 6 hours before starting
operation to protect the compressor.
4 On the user interface, set the unit to cooling operation
mode.
2 On the user interface, turn ON the unit.
Result: The test run starts automatically. During the test run,
the H2P test LED is ON. When the test run is done, the LED
turns OFF.
5.3 Error codes when performing a
test run
If the installation of the outdoor unit has NOT been done correctly,
the following error codes may be displayed on the user interface:
Error code Possible cause
Nothing displayed
(the currently set
temperature is not
displayed)
▪ The wiring is disconnected or there is a
wiring error (between power supply and
outdoor unit, between outdoor unit and
indoor units, between indoor unit and
user interface).
▪ The fuse on the outdoor unit PCB has
blown out.
E3, E4 or L8 ▪ The stop valves are closed.
▪ The air inlet or air outlet is blocked.
E7 There is a missing phase in case of three-
phase power supply units.
Note: Operation will be impossible. Turn
OFF the power, recheck the wiring, and
switch two of the three electrical wires.
L4 The air inlet or air outlet is blocked.