![background image](http://html1.mh-extra.com/html/daikin/erlq004cav3/erlq004cav3_installers-reference-manual_4059854064.webp)
11 Maintenance and service
Installer reference guide
64
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
▪ Fill in the installer setting table (in the operation manual) with the
actual settings.
▪ Make sure that the user has the CD/DVD and the printed
documentation and ask him/her to keep it for future reference.
▪ Explain the user how to properly operate the system and what he/
she has to do in case of problems.
▪ Show the user what jobs he/she has to do in relation to
maintenance of the unit.
▪ Explain the user about energy saving tips as described in the
operation manual.
11
Maintenance and service
NOTICE
Maintenance should preferably be carried out yearly by an
installer or service agent.
11.1
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.
11.1.1
Opening the indoor unit
CAUTION
The front panel is heavy. Be careful NOT to jam your
fingers when opening or closing the unit.
You just need to remove the front panel and remove the expanded
polystyrene front cover of the unit to gain access to most parts which
need maintenance. In rare cases, you may also need to remove the
switch box.
11.2
Checklist for yearly maintenance
of the indoor unit
Check the following at least once a year:
▪ Water pressure
▪ Water filter
▪ Water pressure relief valve
▪ Relief valve hose
▪ Pressure relief valve of the domestic hot water tank
▪ Switch box
▪ Descaling
▪ Chemical disinfection
▪ Anode
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.
1
3
2
5
4
Water pressure relief valve
Open the valve and check if it operates correctly.
The water may
be
very hot!
Checkpoints are:
▪ The water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.
▪ Dirty water coming out of the relief valve:
▪ open the valve until the discharged water does NOT contain dirt
anymore
▪ flush the system and install an additional water filter (a
magnetic cyclone filter is preferable).
To make sure this water originates from the tank, check after a tank
heat up cycle.
It is recommended to do this maintenance more frequently.
Pressure relief valve hose
Check whether the pressure relief valve hose is positioned
appropriately to drain the water. See
"7.5.2 To connect the pressure
relief valve to the drain" on page 33
.
Relief valve of the domestic hot water tank (field supply)
Open the valve and check the correct operation.
Water may be
very
hot!
Checkpoints are:
▪ The water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.
▪ Dirty water coming out of the relief valve:
▪ open the valve until the discharged water does not contain dirt
anymore
▪ flush and clean the complete tank, including the piping between
the relief valve and cold water inlet.
To make sure this water originates from the tank, check after a tank
heat up cycle.
It is recommended to do this maintenance more frequently.
Summary of Contents for ERLQ004CAV3
Page 100: ...2 8 ...
Page 107: ......