1 Troubleshooting
Service manual
12
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause:
Air in the water circuit.
4
Check the water circuit for an external pump. See
.
Possible cause:
The detected water flow is caused by an
external pump.
5
Perform an electrical check of the water flow sensor. See
"2.25 Water flow sensor" on page 87
.
Possible cause:
Faulty water flow sensor.
6
To check for the presence of an external source of vibration.
See
"3.5 External factors" on page 98
.
Possible cause:
The detected water flow is caused by an
external source of vibration.
7
Perform a check of the hydro PCB. See
Possible cause:
Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.25
C4-00 – Indoor heat exchanger thermistor
abnormality
Trigger
Effect
Reset
Refrigerant liquid
thermistor detects an
open or short circuit
during compressor
operation.
Unit will stop
operating.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1
Perform a check of the refrigerant liquid thermistor. See
.
Possible cause:
Faulty refrigerant liquid thermistor.
2
Perform a check of the hydro PCB. See
Possible cause:
Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.26
CJ-02 – Ambient sensor user interface
abnormality
Trigger
Effect
Reset
Ambient sensor user
interface input is out
of range.
Unit will NOT stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1
Perform
a
check
of
the
room
thermistor.
See
.
Possible cause:
Faulty room thermistor.
2
Perform a check of the power supply to the user interface. See
"2.24 User interface" on page 87
.
Possible cause:
Faulty power supply to the user interface.
3
If all checks above are correct, replace the user interface. See
"2.24 User interface" on page 87
.
Possible cause:
Faulty user interface.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.27
E1-00 – PCB defect
Trigger
Effect
Reset
Main PCB detects
that EEPROM is
abnormal.
Unit will stop
operating.
Manual reset via user
interface.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
2
Check if the power supply is conform with the regulations. See
.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
3
Perform a check of the outdoor unit fan motor. See
"2.18 Outdoor unit fan motor" on page 73
Possible cause:
Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.28
E3-00 – High pressure switch abnormality
Trigger
Effect
Reset
High pressure switch
opens due to
measured pressure
>41.7 bar.
Unit will stop
operating.
Manual reset via user
interface.
High pressure control
(measured pressure
>38 bar) occurs 16
times within
300 minutes.
