Daikin Altherma EBLQ011CA3V3 - Repair Procedures; Refrigerant Circuit; Checking Procedures

3 Third party components
Service manual
92
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
3.1.2 Repair procedures
To adjust the power supply
1 Make sure that the power source is in line with the requirements
described in the databook.
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.
To adjust the wiring between the hydro PCB and
extension PCB
1 Adjust the wiring according to the wiring diagram and
connection diagram, see "5.2Wiring diagram"on page101.
2 Check that all connectors are fully plugged‑in. All colour codes
MUST correspond.
3 Check that no connectors are damaged.
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.
3.2 Refrigerant circuit
3.2.1 Checking procedures
INFORMATION
It is recommended to perform the checks in the listed
order.
To check if the stop valve is open
Prerequisite: Remove the required plate work, see "2.19 Plate
work"on page77.
1 Remove the caps.
a
a
c
b
a Cap
b Liquid stop valve
c Gas stop valve
2 Check if the stop valve is completely open.
The refrigerant circuit stop
valve is open?
Action
Yes Return to "3.2.1Checking
procedures"on page92 of the
refrigerant circuit and continue
with the next procedure.
No Open the stop valve of the
refrigerant circuit, see
"3.2.2Repair procedures"on
page93.
To check if the refrigerant circuit is clogged
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Wait for the refrigerant to reach the outdoor temperature.
2 Connect a manometer to the service port.
3 Measure the low pressure as a reference.
4 Turn ON the power of the unit.
5 Activate Cooling via the user interface.
6 Again measure the low pressure.
Low pressure lower than
expected?
Then
Yes Obstruction is possible.
No Obstruction is less likely.
7 Using a thermometer, check for a temperature drop of minimum
4°C. The obstruction is most likely located where this
temperature drop occurs.
Temperature drop found? Action
Yes Replace the clogged part, see
"3.2.2Repair procedures"on
page93.
No Return to "3.2.1Checking
procedures"on page92 of the
refrigerant circuit and continue
with the next procedure.
To check if the refrigerant circuit is correctly
charged
1 Recuperate all refrigerant from the unit, see "3.2.2 Repair
procedures"on page93.
2 Weigh the recuperated refrigerant.
3 Compare the weight of the recuperated refrigerant with the
logbook of the unit. If the weight does NOT match the logbook,
the refrigerant circuit is charged incorrectly.
CAUTION
Make sure that the original calculation of refrigerant is
correct. (e.g. take into account that due to additional
piping, additional refrigerant could be required).
Is the refrigerant circuit
charged correctly?
Action
Yes Return to "3.2.1Checking
procedures"on page92 of the
refrigerant circuit and continue
with the next procedure.
No Add or recuperate refrigerant
until correctly charged, see
"3.2.2Repair procedures"on
page93.