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1 Troubleshooting
Service manual
33
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Root cause category: component – electrical
Possible failure
Root cause
Check
Repair
Deviation of outlet water after
backup heater thermistor will
influence the backup heater
control.
▪ Deviation of outlet water after
backup heater thermistor (lower
temperature
measured
than
actual),
▪ Bad contact between sensor
and pipe.
Check outlet water after backup
heater thermistor.
▪ Replace
outlet
water
after
backup heater thermistor when
required,
▪ Replace
hydro
PCB
when
required.
Root cause category: system design
Possible failure
Root cause
Check
Repair
Water circuit – requested capacity
too high causing the system to run
at full capacity.
Incorrect system selection.
Check required capacity by heat
load calculation. See the capacity
tables in the engineering data
book to know max. system
capacity at indicated conditions.
Adapt system design.
1.5.14
System does not start or operate
Root cause category: software control
Possible failure
Root cause
Check
Repair
Thermostat ON conditions for
space heating are NOT met.
Thermostat ON conditions for
space heating are NOT met.
Confirm thermostat on conditions
depending on the unit control
method (setting [C‑07]):
▪ Setting
1:
external
room
thermostat indicates by contact
when to start/stop,
▪ Setting 2: room thermostat
control => compare setpoint with
room thermistor value. Thermo
on: room temperature = setpoint
- (hysteresis/2),
▪ Thermo off = room temperature
+ (hysteresis/2). For setting of
hysteresis, see setting [9‑0C],
▪ Setting
3:
outlet
water
temperature control => Thermo
on: outlet water temperature =
setpoint. Thermo off: outlet
water temperature –1,5°C.
Change setpoint if required.
Thermostat ON conditions for
domestic hot water operation are
NOT met.
Thermostat ON conditions for
domestic hot water operation are
NOT met.
Confirm thermostat on conditions
depending on the selected
domestic hot water control type
(setting [6‑0D]).
Change setpoint if required.
Out of operation range (ambient
temperature above 35°C).
Ambient temperature higher than
35°C.
No action - unit CANNOT operate
when ambient temperature is
above 35°C.
Root cause category: end user
Possible failure
Root cause
Check
Repair
Space heating or domestic hot
water operation is NOT activated
on the user interface.
Confirm if space heating operation
or domestic hot water operation is
activated on user interface.
Activate space heating or domestic
hot water operation on the user
interface.
Root cause category: parameter (setting)
Possible failure
Root cause
Check
Repair
Displayed date/time is wrong -
schedules NOT correctly executed.
▪ NOT set date/time after initial
start-up,
▪ No power supply for more than
48 hours.
Set date/time according to
operation manual instructions.
Set date/time according to
operation manual instructions.
Displayed date/time is wrong -
schedules NOT correctly executed.
Daylight Saving Time NOT set
correctly.
Check Daylight Saving Time
settings.
Set Daylight Saving Time
according to operation manual.
Содержание Altherma EBLQ011CAV3
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