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6.
M
AINTENANCE
6.1. Important information regarding the refrigerant
used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol.
Refrigerant type: R410A
(1)
GWP
value: 1975
(1)
GWP = global warming potential
Periodical inspections for refrigerant leaks may be required
depending on the applicable legislation. Please contact your local
dealer for more information.
6.2. Maintenance activities
DANGER
■
Do not touch water pipes during and immediately after
operation as the pipes may be hot. Your hand may
suffer burns. To avoid injury, give the piping time to
return to normal temperature or be sure to wear
proper gloves.
■
Do not touch any switch with wet fingers. Touching a
switch with wet fingers can cause electrical shock.
WARNING
Do not touch the refrigerant pipes during and immediately
after operation as the refrigerant pipes may be hot or cold,
depending on the condition of the refrigerant flowing
through the refrigerant piping, compressor, and other
refrigerant cycle parts. Your hands may suffer burns or
frostbite if you touch the refrigerant pipes. To avoid injury,
give the pipes time to return to normal temperature or, if
you must touch them, be sure to wear proper gloves.
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals, preferably yearly. This maintenance should be
carried out by your local Daikin technician (see installation manual).
The only maintenance which may be required by the operator is:
■
keeping the remote controller clean by means of a soft damp
cloth,
■
checking if the water pressure indicated on the manometer is
above 1 bar.
Only for the optional domestic hot water tank:
■
A check for correct operation of the pressure relief valve
installed on your domestic hot water tank, has to be carried out
at least every 6 months: it is important that the lever on the valve
is actuated to prevent accumulation of mineral deposits that may
impair valve operation and to confirm that the valve and
discharge pipe are not blocked. The lever should be operated
slowly and smoothly to avoid a sudden rush of hot water from
the discharge pipe.
Failure to operate the relief valve actuating lever may result in
the domestic hot water tank exploding.
■
Continuous leakage of water from the discharge pipe may
indicate a problem with the domestic hot water tank.
■
If a discharge pipe is connected to the pressure relief device it
must be installed in a continuously downward direction and in a
frost-free environment. It must be left open to the atmosphere.
CAUTION
If the supply cord is damaged, it must be replaced by the
manufacturer, its agent or similar qualified persons in order
to avoid hazards.
Operation manual
21
6.3. Standstill
NOTICE
During longer periods of standstill, e.g. during summer
with a heating only application, it is very important NOT TO
SWITCH OFF THE POWER SUPPLY towards the unit.
Switching off the power supply stops the automatic
repetitive movement of the pump in order to prevent it from
getting jammed.
NOTICE
If no glycol is in the system in case of a power supply
failure or pump operating failure, drain the system (as
suggested in the figure below).
A
When water is at standstill inside the system, freezing
is very likely to happen and damaging the system in
the process.
7.
T
ROUBLESHOOTING
The guidelines below might help to solve your problem. If you cannot
solve the problem, consult your installer.
P
OSSIBLE CAUSES
No readings on the remote controller
(blank display)
One of the error codes appears
The schedule timer does work but
the programmed actions are
executed at the wrong time.
(e.g. 1 hour too late or too early)
The schedule timer is programmed
but does not work.
Capacity shortage
Temperature values displayed on the
remote controller (user interface) are
displayed in °F instead of °C.
Unit and options for air to water heat pump system
<A
C
ORRECTIVE ACTIONS
• Check if the mains power is still
connected to your installation.
• The benefit kWh rate power
supply is active (see installation
manual).
Consult your local dealer.
Refer to the installation manual for a
detailed list of error codes.
Check if the clock and the day of the
week are set correctly, correct if
necessary.
In case the pr icon is not displayed,
push the pr button to enable the
schedule timer.
Consult your local dealer.
To change the display back to °C,
push ib and jb buttons
simultaneously for 5 seconds.
Execute same procedure to change
back to the °F display. The default
temperature display is in °C.
E(D/B)(H/L)Q011~016BB
4PW67905-1A – 2013.02
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