Daikin Altherma EBLQ011CA3V3 - H3-00 - High Pressure Switch Defect; H6-00 - Location Detection Sensor Abnormality; H8-00 - Compressor Input Abnormality

1 Troubleshooting
Service manual
17
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
2 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.42 H3-00 – High pressure switch defect
Trigger Effect Reset
High pressure switch
is activated when
compressor is off.
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 high pressure switch. See "2.13 High
pressure switch"on page57.
Possible cause: Faulty high pressure switch.
2 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.
3 Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
4 Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter 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.
1.4.43 H6-00 – Location detection sensor
abnormality
Trigger Effect Reset
Compressor fails to
start within
15seconds after the
compressor run
command signal is
sent.
Unit will NOT stop
operating.
Automatic reset after
a continuous
operation of
10minutes.
If the error re-occurs
within 8minutes: 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 compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
2 Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
3 Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
4 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.
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.
1.4.44 H8-00 – Compressor input abnormality
Trigger Effect Reset
DC voltage or current
sensor abnormality
based on the
compressor running
frequency and the
input current.
Unit will NOT stop
operating.
Automatic reset when
compressor runs
normally for
60minutes.
If the error re-occurs
too soon: 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 main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
2 Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
3 Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
4 Perform a check of the reactor. See "2.20 Reactor" on
page78.