1 Troubleshooting
Service manual
8
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause:
Increased water temperature due to an
external heat source.
2
Perform a check of the outlet water after backup heater
thermistor. See
.
Possible cause:
Faulty outlet water after backup heater
thermistor.
3
Perform a check of the backup heater. See
.
Possible cause:
Faulty backup heater.
4
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.
1.4.12
8H-00 – Backup heater outlet water
temperature increase
Trigger
Effect
Reset
Outlet water after
backup heater
thermistor detects
temperature >65°C
during space heating
without electrical
heater.
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 water circuit for an external heat source. See
"3.3 Water circuit" on page 95
.
Possible cause:
Increased water temperature due to an
external heat source.
2
Perform a check of the outlet water after backup heater
thermistor. See
.
Possible cause:
Faulty outlet water after backup heater
thermistor.
3
Perform a check of the backup heater. See
.
Possible cause:
Faulty backup heater.
4
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.
1.4.13
8H-02 – Overheating mixed water circuit
(thermostat)
Trigger
Effect
Reset
Thermal protector
Q3L in mixed circuit
is activated.
Unit will stop
operating.
Automatic reset after
reset of thermal
protector.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1
Perform a check of the thermal protector Q3L. See
"3.4.1 Checking procedures" on page 98
Possible cause:
Faulty thermal protector or faulty switching
temperature of thermal protector Q3L.
2
Perform an electrical check of the extension PCB. See
"2.12 Extension PCB" on page 56
.
Possible cause:
Faulty extension PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.14
8H-03 – Overheating water circuit
(thermostat)
Trigger
Effect
Reset
Unit detects activated
aquastat.
Pump will stop
running.
Automatic reset when
the circuit is closed.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1
Check the set trigger temperature of the safety thermostat. See
"3.4 Manuafacturer components" on page 98
.
Possible cause:
Faulty trigger temperature setting of the
safety thermostat.
2
Check the set water temperature. See
Possible cause:
Faulty water temperature setting.
3
Perform a check of the 3-way valve. See
Possible cause:
Faulty 3‑way valve.
4
Perform a check of the operation of the Aquastat. See
"3.4 Manuafacturer components" on page 98
.
Possible cause:
Faulty Aquastat.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.15
A1-00 – Zero cross detection abnormality
Trigger
Effect
Reset
Power supply
abnormality. The
sinus of the power
supply crosses the
0‑axis too often in
±10 seconds.
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.
Содержание Altherma EBLQ011CAV3
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