Daikin Altherma EBLQ011CA3V3 - E7-00 - Fan Lock Abnormality; E8-00 - Input Overvoltage Abnormality; E9-00 - Expansion Valve Abnormality; Cooling;Heating Switch Abnormality

1 Troubleshooting
Service manual
14
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.31 E7-00 – Fan lock abnormality
Trigger Effect Reset
Fan does NOT start
15~30seconds after
ON signal.
It can occur that the
error code is
triggered when the
fan motor is running
caused by a faulty
rotating sensor
signal.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 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.
2 Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.32 E8-00 – Input overvoltage abnormality
Trigger Effect Reset
Compressor running
current exceeds
standard value for
2.5seconds.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check the outdoor temperature. See "3.5 External factors" on
page98.
Possible cause: Outdoor temperature is out of operation
range.
2 Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
3 Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
4 Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.33 E9-00 – Expansion valve abnormality
Trigger Effect Reset
No continuity of the
expansion valve.
Unit will stop
operating.
Manual reset via user
interface.
Minimum expansion
valve opening and
suction superheat <4
K and discharge
superheat <5 K.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of all refrigerant thermistors. See
"2.23Thermistors"on page82.
Possible cause: Faulty refrigerant thermistor(s).
2 Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
3 Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
4 Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
5 Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.34 EA-00 – Cooling/Heating switch
abnormality
Trigger Effect Reset
Room thermistor is
NOT functioning
within operation
range.
Unit will NOT stop
operating.
Automatic reset after
a continuous
operation of
10minutes.
If the error occurs too
soon: unit will stop
operating.
Manual reset via user
interface.