Daikin Altherma EHYKOMB33AA - Page 227

15 | Troubleshooting
Installer reference guide
227
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Minimum required flow during defrost operation
08 models 8l/min
If the 7H‑01 error persists, the unit will stop operation and the user interface will
display an error code that needs to be reset manually. Depending on the problem,
this error code is different:
Error code Detailed error code Description
7H 04 The water flow problems mainly
occurred during domestic hot water
operation. Check the domestic hot
water circuit.
7H 05 The water flow problems mainly
occurred during space heating
operation. Check the space heating
circuit.
7H 06 The water flow problems mainly
occurred during cooling/defrost
operation. Check the space heating/
cooling circuit.
Additionally, this error code might be an
indication of frost damage to the plate
heat exchanger. In that case, contact
your local dealer.
INFORMATION
Error AJ-03 is reset automatically from the moment there is a normal tank heat-up.
INFORMATION
Error EC-04 is reset automatically from the moment the domestic hot water tank is
preheated to a sufficiently high temperature.
INFORMATION
If a U6‑36 error occurs, press the gas boiler’s On/off button.
Error codes of the outdoor unit
Error code Detailed error code Description
A5 00 OU: High pressure cooling/
Peak
cut/ freeze protection
problem.
Please contact your dealer.
E1 00 OU: PCB defect.
Power reset required.
Please contact your dealer.