13 Disposal; Overview: Disposal; To Pump Down - Daikin Altherma EDLQ011-016CW1 Installer's Reference Manual

13 Disposal

Error codes of the indoor unit
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ When the Domestic hot water > Type > Reheat or
Reheat + sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).
▪ When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.
INFORMATION
If the booster heater overheats and is disabled by the
thermostatic safety, the unit will not give an error directly.
Check if the booster heater is still in operation if you
experience one or more of the following errors:
▪ Powerful operation takes a very long time to heat up
and the error code AJ-03 is displayed.
▪ During anti-legionella operation (weekly), the error code
AH-00 is displayed because the unit cannot reach the
requested temperature required for tank disinfection.
INFORMATION
A malfunctioning booster heater will have an impact on
energy metering and power consumption control.
NOTICE
When the minimum water flow is lower than described in
the table below, the unit will temporarily stop operation and
the user interface will display error 7H‑01. After some time,
this error will reset automatically and the unit will resume
operation.
If the 7H‑01 error persists, the unit will stop operation and the user
interface will display an error code that needs to be reset manually.
Depending on the problem, this error code is different:
Error code Detailed error
code
7H 04
7H 05
7H 06
INFORMATION
Error AJ-03 is reset automatically from the moment there is
a normal tank heat-up.
Installer reference guide
88
Description
The water flow problems mainly
occurred during domestic hot
water operation. Check the
domestic hot water circuit.
The water flow problems mainly
occurred during space heating
operation. Check the space
heating circuit.
The water flow problems mainly
occurred during cooling/defrost
operation. Check the space
heating/cooling circuit.
Additionally, this error code might
be an indication of frost damage
to the plate heat exchanger. In
that case, contact your local
dealer.
INFORMATION
Error EC-04 is reset automatically from the moment the
domestic hot water tank is preheated to a sufficiently high
temperature.
13 Disposal
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.
13.1

Overview: Disposal

Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Bringing the system to a specialized treatment facility.
INFORMATION
For more details, see the service manual.
13.2

To pump down

Example: To protect the environment, pump down when disposing
of the unit.
It is NOT required to pump down when relocating the unit.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump
down the system, and there is a leak in the refrigerant
circuit:
▪ Do NOT use the unit's automatic pump down function,
with which you can collect all refrigerant from the
system into the outdoor unit. Possible consequence:
Self-combustion and explosion of the compressor
because of air going into the operating compressor.
▪ Use a separate recovery system so that the unit's
compressor does NOT have to operate.
NOTICE
During pump down operation, stop the compressor before
removing the refrigerant piping. If the compressor is still
running and the stop valve is open during pump down, air
will be sucked into the system. Compressor breakdown or
damage to the system can result due to abnormal pressure
in the refrigerant cycle.
Pump down operation will extract all refrigerant from the system into
the outdoor unit.
1 Remove the valve cap from the liquid stop valve and the gas
stop valve.
2 Carry out forced cooling. See
cooling" on page 89.
3 After 5 to 10 minutes (after only 1 or 2 minutes in case of very
low ambient temperatures (<−10°C)), close the liquid stop valve
with a hexagonal wrench.
4 Check on the manifold if the vacuum is reached.
5 After 2-3 minutes, close the gas stop valve and stop forced
cooling.
EBLQ+EDLQ011~016CAV3+W1 + EK(2)CB07CAV3 +
Daikin Altherma low temperature monobloc
"13.3 To start and stop forced
EKMBUHCA3V3+9W1
4P522034-1 – 2018.01