Error Codes: Overview - Daikin Altherma 3 H F Installer's Reference Manual

12 | Troubleshooting

12.4.2 Error codes: Overview

Error codes of the unit
Installer reference guide
194
Error code Detailed error code Description
7H 01
7H 04
7H 05
7H 06
7H 07
80 01
81 00
81 06
89 01
89 02
89 03
8F 00
8H 00
8H 03
A1 00
A5 00
AA 01
AA 02
AH 00
AJ 03
C0 00
C0 01
C0 02
C4 00
Water flow problem
Water flow problem during
domestic hot water production
Water flow problem during
heating/sampling
Water flow problem during
cooling/defrost
Water flow problem. Pump
deblocking active
Entering water thermistor
abnormality of outdoor unit
Leaving water temperature
sensor problem
Entering water temperature
thermistor abnormality
(indoor unit)
Heat exchanger frozen
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
OU: High pressure peak cut /
freeze protection problem
Backup heater overheated
External backup heater
overheated
Tank disinfection function
not completed correctly
Too long DHW heat-up time
required
Flow sensor malfunction
Flow switch malfunction
Flow switch malfunction
Heat exchanger temperature
sensor problem
EPGA11~16DAV3 + EAVH16SU18+23DA6V
Daikin Altherma 3 H F
4P606487-1 – 2019.12