Daikin EBLA04E V Series Service Manual page 90

3 | Troubleshooting
Possible failure
Space heating (cooling) or
domestic hot water
operation is NOT activated
on the user interface.
Possible failure
Displayed date/time is
wrong - schedules NOT
correctly executed.
Displayed date/time is
wrong - schedules NOT
correctly executed.
Schedules NOT activated.
Holiday setting active.
Backup heater operation
disabled.
Second step of the backup
heater is NOT allowed.
Backup heater equilibrium
point was set too low.
Possible failure
PHE condenser (partial)
blockage.
3‑way valve bypass
between domestic hot
water and space heating
(cooling).
Water filter blocked.
Service manual
90
draft – 31/05/2022 15:53
Root cause category: end user
Root cause
—
Root cause category: parameter (setting)
Root cause
▪ NOT set date/time after
initial start-up,
▪ No power supply for
more than 48 hours.
Daylight Saving Time NOT
set correctly.
Schedules were NOT
confirmed (see the
schedule settings).
Holiday setting is activated
in the user interface.
Setting backup heater
operation mode [4‑00] is
set to 0 (disable).
Setting "enable backup
heater step 2" [4‑07] is set
to 0 (NOT allowed).
Setting "equilibrium
temperature" [5‑01] was
set too low.
Root cause category: installation
Root cause
Dirty water (particles).
3‑way valve incorrectly
mounted.
Dirty water.
Check
Confirm if space heating
(cooling) operation or
domestic hot water
operation is activated on
user interface.
Check
Check date/setting and
content of schedules.
Check Daylight Saving Time
settings.
Check schedules on the
user interface.
Check holiday settings.
Check setting [4‑00].
Check setting [4‑07].
Check setting [5‑01].
Check
▪ Check water flow rate
registered by flow
sensor,
▪ Check plate heat
exchanger for blockage.
Check the 3‑way valve.
▪ Check water filter,
▪ Check water quality.
Repair
Activate space heating
(cooling) or domestic hot
water operation on the
user interface.
Repair
Set date/time according to
operation manual
instructions.
Set Daylight Saving Time
according to operation
manual.
Set schedule according to
user reference guide.
Set holiday settings
correctly.
Change setting [4‑00] to 1.
Change setting [4‑07] to 1.
Change setting [5‑01] to 0
or higher to more quickly
allow backup heater
operation.
Repair
▪ If required replace the
plate heat exchanger,
▪ Check the water quality.
Correct the position of the
3‑way valve.
▪ Clean the water filter,
▪ Check the water quality.
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05