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2 Components
Service manual
74
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
One or both propeller fan
blade assemblies are
damaged?
Action
Yes
Replace the damaged propeller
fan blade assembly, see
"2.18.2 Repair procedures" on
page 75
No
Perform a mechanical check of
the DC fan motor assembly, see
"2.18.1 Checking procedures" on
page 73
To perform a mechanical check of the DC fan
motor assembly
Prerequisite:
First perform a mechanical check of the propeller fan
blade assembly, see
"2.18.2 Repair procedures" on page 75
.
1
Check the friction of the DC fan motor shaft bearing.
Is the DC fan motor shaft
friction normal?
Action
Yes
Perform an electrical check of the
DC fan motor assembly, see
"2.18.1 Checking procedures" on
page 73
No
Replace the DC fan motor
assembly, see
To perform a functionality check of the DC fan
motor assembly
1
First perform a mechanical check of both the DC fan motor
assemblies, see
"2.18.1 Checking procedures" on page 73
2
Turn ON the power of the unit.
3
Activate Cooling / Heating operation or DHW operation
operation via the user interface.
4
Check the functioning of both the outdoor unit fans.
Outdoor unit fan …
Action
Rotates continuously (without
interruption)
DC fan motor assembly is OK.
Return to the troubleshooting of
the specific error and continue
with the next procedure.
Does not rotate
Perform an electrical check of the
DC fan motor assembly (fan
motor does not rotate), see
"2.18.1 Checking procedures" on
page 73
Rotates for a short time
Perform an electrical check of the
DC fan motor assembly (fan
motor rotates for a short time),
see
To perform an electrical check of the DC fan motor
assembly (fan motor does not rotate)
1
First perform a mechanical check of both the DC fan motor
assemblies, see
"2.18.1 Checking procedures" on page 73
NOTICE
Perform the following procedure for both DC fan motor
assemblies
2
Confirm via the D‑checker that the DC fan motor assembly
receives an ON signal.
3
Measure the voltage on the DC fan motor connector pins 4-7.
The measured voltage MUST be 270~330 V DC.
Is the measured voltage
correct?
Action
Yes
Skip the next step of this
procedure.
No
Perform the next step of this
procedure.
4
Disconnect the DC fan motor connector from the inverter PCB
and measure the voltage on the connector pins 4-7 of the
connector on the inverter PCB. The voltage MUST be
270~330 V DC.
Is the measured voltage on the
DC fan motor connector on the
inverter PCB correct?
Action
Yes
Replace the DC fan motor
assembly, see
No
Replace the inverter PCB, see
"2.15 Inverter PCB" on page 61
.
5
Measure the voltage on the DC fan motor connector pins 4-3.
The measured voltage MUST be 15 V DC.
Is the measured voltage
correct?
Action
Yes
Return to the troubleshooting of
the specific error and continue
with the next procedure.
No
Perform the next step of this
procedure.
6
Disconnect the DC fan motor connector from the inverter PCB
and measure the voltage on the connector pins 4-3 of the
connector on the inverter PCB. The voltage MUST be 15 V DC.
Is the measured voltage on the
DC fan motor connector on the
inverter PCB correct?
Action
Yes
Replace the DC fan motor
assembly, see
No
Replace the inverter PCB, see
"2.15 Inverter PCB" on page 61
.
To perform an electrical check of the DC fan motor
assembly (fan motor rotates for a short time)
1
First perform a mechanical check of both the DC fan motor
assemblies, see
"2.18.1 Checking procedures" on page 73
NOTICE
Perform the following procedure for both DC fan motor
assemblies
2
Confirm via the D‑checker that the DC fan motor assembly
receives an ON signal.
3
Measure the voltage on the DC fan motor connector pins 4-7.
The measured voltage MUST be 270~330 V DC.
Is the measured voltage
correct?
Action
Yes
Skip the next step of this
procedure.
No
Perform the next step of this
procedure.
4
Disconnect the DC fan motor connector from the inverter PCB
and measure the voltage on the connector pins 4-7 of the
connector on the inverter PCB. The voltage MUST be
270~330 V DC.
Содержание Altherma EBLQ011CAV3
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