Test Operation; Pre-Run Checks - Rotex RRHQ011BAV3 Manuel D'installation

T
EST OPERATION
DANGER
Never leave the unit unattended during installation or
servicing. When the service panel is removed live parts
can be easily touched by accident..
Note that during the first running period of the unit,
NOTE
required power input may be higher than stated on the
nameplate of the unit. This phenomenon originates
from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and
stable power consumption.

Pre-run checks

Items to check
Electrical wiring Is the wiring as mentioned on the wiring diagram?
Inter-unit wiring Make sure no wiring has been forgotten and that
Earth wire there are no missing phases or reverse phases.
Is the unit properly earthed?
Is the wiring between units connected in series
correct?
Are any of the wiring attachment screws loose?
Is the insulation resistance at least 1 MΩ?
- Use a 500 V mega-tester when measuring
insulation.
- Do not use a mega-tester for low-voltage circuits.
Refrigerant Is the size of the piping appropriate?
piping
Is the insulation material for the piping attached
securely?
Are both the liquid and gas pipes insulated?
Are the stop valves for both the liquid side and the
gas side open?
Extra Did you write down the extra refrigerant and the
refrigerant refrigerant piping length?
Be sure to perform a test run.
Be sure to fully open the liquid-side and gas-side stop valves. If
you operate the unit with stop valves closed, the compressor will
break down.
Be sure to execute the first test run of the installation in cooling
mode operation.
Never leave the unit unattended with an open front panel during
test run.
To protect the compressor, make sure to turn on the power
supply 6 hours before starting operation.
During tests never pressurize the applications with a pressure
higher than the maximum allowable pressure (indicated on the
name plate of the unit).
Test run
Carry out the test run in accordance with the indoor installation
manual to ensure that all functions and parts are working properly.
Installation manual
14
Failure diagnosis at the moment of first installation
In case nothing is displayed on the remote controller (the current
set temperature does not display), check for any of the following
abnormalities before you can diagnose possible malfunction
codes.
Disconnection or wiring error (between power supply and
outdoor unit, between outdoor unit and indoor units, between
indoor unit and remote controller).
The fuse on the outdoor unit PCB may have run out.
If the remote controller shows " E3 ", " E4 " or " L8 " as an error code,
there is a possibility that either the stop valves are closed, or that
air inlet or air outlet are blocked.
If the error code " U2 " is displayed on the remote controller, check
for voltage imbalance.
If the error code "L4" is displayed on the remote controller, it is
possible that air inlet or air outlet are blocked.
The reversed phase protection detector of this product only
works during the initialisation stage after a power reset.
The reversed phase protection detector is designed to stop the
product in case of an abnormality when the product is started
up.
When the reversed phase protection circuit forced the unit to
stop, check if all phases are existing. If this is the case, shut
off the power supply to the unit and replace two of three
phases. Turn on power again and start the unit.
Reversed phase detection is not performed while the product
is operating.
In case of possible reversal of phases after a momentary
black out of power and the power goes on and off while the
product is operating, install a reversed phase protection
circuit on site. Such situation is not unimaginable when using
generators. Running the product in reversed phase can
break the compressor and other parts.
For a missing phase in case of W1 units, " E7 " or " U2 " will be
displayed on the remote controller of the indoor unit.
Operation will be impossible with either one of these
phenomena. If this happens, turn off the power, re-check the
wiring and switch the position of two of the three electrical wires.
RRHQ0011~016BAV3 + RRLQ011~016BAV3+W1
Outdoor unit for air to water heat pump
4PW54248-1