15 | Troubleshooting
Installer reference guide
220
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Possible causes Corrective action
Large domestic hot water tapping
happened recently before the
programmed start-up of the disinfection
function
When the Domestic hot water >
Type > Reheat or Reheat + sched.
is selected, it is recommended to
program the start-up of the disinfection
function at least 4hours later than the
last expected large hot water tapping.
This start-up can be set via the installer
settings (disinfection function).
When the Domestic hot water >
Type > Scheduled only is selected,
it is recommended to program a
Storage eco 3hours before the
scheduled start-up of the disinfection
function to preheat the tank.
The disinfection operation was stopped
manually: with the user interface
displaying the DHW home page and its
user permission level set to
Installer, the button was pressed
during disinfection operation.
Do NOT press the button while the
disinfection function is active.
15.3.9 Symptom: Boiler abnormality detection (HJ-11 error)
Possible causes Corrective action
Communication cable problem Mount the communication cable
between the gas boiler and the indoor
unit properly.
Boiler error Check the boiler display for error
information.
15.3.10 Symptom: Boiler/hydrobox combination abnormality (UA-52 error)
Possible causes Corrective action
Boiler/hydrobox mismatch Make sure that the . setting is the
following for:
▪ 0=for EHYHBH05 + EHYHBH08
▪ 1=for EHYHBX08
Incompatibility of software Update the boiler and hydrobox
software to the latest version.
15.3.11 Symptom: The burner does NOT ignite
Possible causes Corrective action
Gas tap is closed. Open the gas tap.
Air in the gas tap. Remove air from the gas pipe.
Gas supply pressure too low. Contact the gas supply company.
No ignition. Replace the ignition electrode.
To Next Page
Loading...
