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Troubleshooting
Installer reference guide
185
C08AF + EHYKOMB33A
Daikin Altherma R Hybrid
4P471761-1E – 2020.10
Error code
Detailed error code Description
HJ
11
Boiler abnormality detection
Check boiler
Refer to boiler manual
HJ
12
Bypass valve turning error
Please contact your dealer.
U3
00
Under floor heating screed
dryout function not
completed
correctly.
U4
00
Indoor/outdoor unit
communication problem.
U5
00
User interface
communication problem.
U6
36
Boiler standby abnormality
Check boiler
Refer to boiler manual
U8
01
Connection with adapter lost
Please contact your dealer.
UA
00
Indoor unit, outdoor unit
matching problem.
Power reset required.
UA
52
Boiler, indoor unit matching
problem.
Please contact your dealer.
NOTICE
When the minimum water flow is lower than described in the table below, the unit
will temporarily stop operation and the user interface will display error 7H‑01. After
some time, this error will reset automatically and the unit will resume operation.
Minimum required flow during heat pump operation
05+08 models
9 l/min
Minimum required flow during defrost operation
05+08 models
9 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: