Daikin EBLQ05+07CAV3 Installer's Reference Manual page 79

▪ Explain the user about energy saving tips as described in the
operation manual.
10.1 About locking and unlocking
If required, it is possible to lock the buttons of the main user
interface, making it impossible for the user to operate it. For the user
to be able to change setpoint temperatures, the simplified user
interface or an external room thermostat is then required.
You can use the following locking modes:
▪ Function lock: Locks a specific function to prevent people from
changing its settings.
▪ Button lock: Locks all buttons to prevent users from changing
settings.
Possible function locks
Lock
Room On/OFF
LWT On/OFF
Tank On/OFF
Temperature up/down
Quiet mode
Holiday
Operation mode
User settings
To check if locking is active
1 Press to go to one of the home pages.
2 If is displayed, button lock is active.
Note: If you are on a home page and try to use a function that is
locked, is displayed for 1 second.
To activate or deactivate a function lock
1 Press to go to the menu structure.
2 Press for more than 5 seconds.
3 Select a function and press
4 Select Lock or Unlock, and press
To activate or deactivate button lock
1 Press to go to one of the home pages.
2 Press for more than 5 seconds.
11 Maintenance and service
NOTICE
Maintenance should preferably be carried out yearly by an
installer or service agent.
11.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
▪ The inspection of the backup heater switch box.
▪ The inspection of the control box switch box.
EBLQ05+07CAV3 + EDLQ05+07CAV3 + EKCB07CAV3 +
EK2CB07CAV3 + EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
If active, people cannot...
Turn ON or OFF the room
temperature control.
Turn ON or OFF the leaving
water temperature (main +
additional) control.
Turn ON or OFF the domestic
hot water control.
Adjust temperatures.
Use quiet mode.
Use holiday mode.
Set the space operation mode.
Change settings in [7]: > User
settings.
.
.
11 Maintenance and service
11.2 Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
11.2.1 Opening the outdoor unit
See "7.2.2 To open the outdoor unit" on page 31
the switch box cover of the outdoor unit" on
11.2.2 Opening the control box
See "7.2.4 To open the control box" on
11.2.3 Opening the option box
See "7.2.5 To open the option box" on
11.2.4 Opening the backup heater
See "7.2.6 To open the backup heater" on page 32
open the switch box cover of the backup heater" on
11.3 Checklist for yearly maintenance
of the outdoor unit
Check the following at least once a year:
▪ Heat exchanger
▪ Water pressure
▪ Water filter
▪ Water pressure relief valve
▪ Pressure relief valve of the domestic hot water tank
▪ Switch box
▪ Booster heater of the domestic hot water tank
Heat exchanger
The heat exchanger of the outdoor unit can get blocked up due to
dust, dirt, leaves, etc. It is recommended to clean the heat
exchanger yearly. A blocked heat exchanger can lead to too low
pressure or too high pressure leading to worse performance.
Water pressure
Check whether the water pressure is above 1 bar. If it is lower, add
water.
Water filter
Clean the water filter.
NOTICE
Handle the water filter with care. Do NOT use excessive
force when you reinsert the water filter so as NOT to
damage the water filter mesh.
and "7.2.3 To open
page 31.
page 32.
page 32.
and "7.2.7 To
page 32.
Installer reference guide
79