Daikin EBHQ011BB6V3, Operation Manual

Operation manual

21

E(D/B)(H/L)Q011~016BB

Unit and options for air to water heat pump system

4PW67905-1A – 2013.02

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
GWP

(1)

 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

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.

6.3.

Standstill

7.

T

ROUBLESHOOTING

The guidelines below might help to solve your problem. If you cannot
solve the problem, consult your installer.

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.

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.

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).

When water is at standstill inside the system, freezing
is very likely to happen and damaging the system in
the process.

P

OSSIBLE

CAUSES

C

ORRECTIVE

ACTIONS

No readings on the remote controller 
(blank display)

• Check if the mains power is still 

connected to your installation.

• The benefit kWh rate power 

supply is active (see installation 
manual).

One of the error codes appears

Consult your local dealer.
Refer to the installation manual for a 
detailed list of error codes.

The schedule timer does work but 
the programmed actions are 
executed at the wrong time.
(e.g. 1 hour too late or too early)

Check if the clock and the day of the 
week are set correctly, correct if 
necessary.

The schedule timer is programmed 
but does not work.

In case the 

pr

 icon is not displayed, 

push the 

pr

 button to enable the 

schedule timer.

Capacity shortage

Consult your local dealer.

Temperature values displayed on the 
remote controller (user interface) are 
displayed in °F instead of °C.

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.

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