Daikin altherma ERHQ011BAV3, Руководство по установке, Страница: 25 / 32

ERHQ011~W1 + ERLQ011~W1
Outdoor unit for air to water heat pump
4PW57794-1 – 08.2010
Installation manual
22
15.3. 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.
■
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.
16. M
AINTENANCE AND SERVICING
16.1. Service precautions
In order to ensure optimal operation of the unit, a number of checks
and inspections should be carried out on the unit at regular intervals,
preferably yearly.
This maintenance shall be carried out by the installer or service
agent.
■
Please note that some sections of the electric component box
are extremely hot.
■
Make sure you do not touch a conductive section.
■
After measuring the residual voltage, pull out the outdoor fan
connector.
■
The outdoor fan may rotate due to strong backblow wind,
causing the capacitor to charge. This may result in an electric
shock.
After maintenance, make sure the outdoor fan connector is
connected again. Otherwise, the unit may break down.
16.2. Service mode operation
Refer to the service manual to carry out any service mode operation.
17. D
ISPOSAL REQUIREMENTS
Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with applicable legislation.
DANGER: ELECTRICAL SHOCK
See "2. Safety considerations" on page 2 .
NOTICE
Touch a metal part by hand (such as the stop valve) in
order to eliminate static electricity and to protect the PCB
before performing service.
CAUTION
Do not rinse the outdoor unit. This may cause electric
shocks or fire.
DANGER: DO NOT TOUCH PIPING AND INTERNAL
PARTS
See "2. Safety considerations" on page 2 .
■
Do not touch live parts for 10 minutes after the power
supply is turned off because of high voltage risk.
■
Make sure that the power supply is turned off before
performing the maintenance work. The heater of the
compressor may operate even in stop mode.