Daikin CHYHBH05AA Installer's Reference Manual page 82

13 Troubleshooting
Error code Detailed error
code
89 02
89 03
8F 00
8H 00
8H 03
A1 00
A1 01
AA 01
AH 00
AJ 03
C0 00
C4 00
CJ 02
EC 00
EC 04
H1 00
Installer reference guide
82
Description
Heat exchanger frozen.
Heat exchanger frozen.
Abnormal increase outlet
water temperature (DHW).
Abnormal increase outlet
water temperature.
Overheating water circuit
(thermostat).
Zero cross detection problem.
Power reset required.
Please contact your dealer.
EEPROM reading error.
Backup heater overheated.
Power reset required.
Please contact your dealer.
Tank disinfection function not
completed correctly.
Too long DHW heat-up time
required.
Flow sensor/switch malfunction.
Please contact your dealer.
Heat exchanger temperature
sensor problem.
Please contact your dealer.
Room temperature sensor
problem.
Please contact your dealer.
Abnormal increase tank
temperature.
Tank preheating
External temperature
sensor problem.
Please contact your dealer.
Error code Detailed error
code
HC 00
HJ 11
HJ 12
U3 00
U4 00
U5 00
U6 36
U8 01
UA 00
UA 52
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ 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
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).
▪ When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.
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
Daikin hybrid for multi heat pump – heat pump module
Description
Tank temperature sensor
problem.
Please contact your dealer.
Boiler abnormality detection
Check boiler
Refer to boiler manual
Bypass valve turning error
Please contact your dealer.
Under floor heating screed
dryout function not completed
correctly.
Indoor/outdoor unit
communication problem.
User interface
communication problem.
Boiler standby abnormality
Check boiler
Refer to boiler manual
Connection with adapter lost
Please contact your dealer.
Indoor unit, outdoor unit
matching problem.
Power reset required.
Boiler, indoor unit matching
problem.
Please contact your dealer.
9 l/min
CHYHBH05+08AA + EHYKOMB33A
4P471761-1A – 2017.10