Disposal; Overview: Disposal; To Pump Down - Daikin Altherma ERLQ004-006-008CA Reference Manual

Error code Detailed error
code
89 02
A1 01
AH 00
89 03
AJ 03
UA 16
UA 17
UA 21
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.
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.
Minimum required flow during heat pump operation
04 models
08 models
16 models
Minimum required flow during defrost operation
04+08 models
16 models
Minimum required flow during backup heater operation
All models
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
Description
Heat exchanger frozen.
EEPROM reading error.
Tank disinfection function not
completed correctly.
Heat exchanger frozen.
Too long DHW heat-up time
required.
Extension/hydro
communication problem.
Tank type problem
Extension/hydro
mismatch problem.
6 l/min
6 l/min
10 l/min
12 l/min
15 l/min
12 l/min
If the 7H 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.
INFORMATION
If the unit detects flow when the pump is not running, an
external device might be causing flow, or there might be
something wrong with the flow measuring devices (flow
sensor).
▪ If the flow sensor detects flow when the pump is not
running, the unit will stop operation and the user
interface will display error C0‑00. For the unit to resume
operation, this error needs to be reset manually.
13

Disposal

13.1

Overview: Disposal

Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Dismantling the system according to the applicable legislation.
3 Treating the refrigerant, oil and other parts according to the
applicable legislation.
INFORMATION
For more details, see the service manual.
13.2

To pump down

Example: To protect the environment, pump down when relocating
the unit or when disposing of the unit.
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 breakage and
other injury will be the result due to abnormal pressure in
the refrigerant cycle.
13 Disposal
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 defrost
operation. Check the space
heating circuit.
Additionally, this error code might
be an indication of frost damage
to the plate heat exchanger. In
that case, contact your local
dealer.
Installer reference guide
69