Daikin Altherma 3 R F EHVZ04S18E 6V Series - Error Codes: Overview

14 | Troubleshooting
Installer reference guide
218
ERGA04~08EAV3(A) + EHVZ04+08S18+23EA6V+9W
Daikin Altherma 3 R F
4P629093-1 – 2020.08
14.4.2 Error codes: Overview
Error codes of the unit
Error code Description
7H-01 Water flow problem
7H-04 Water flow problem during domestic hot water
production
7H-05 Water flow problem during heating/sampling
7H-06 Water flow problem during cooling/defrost
80-01 Returning water temperature sensor problem
81-00 Leaving water temperature sensor problem
89-01 Heat exchanger frozen (during defrost)
89-02 Heat exchanger frozen (not during defrost)
89-03 Heat exchanger frozen (during defrost)
8F-00 Abnormal increase outlet water temperature
(DHW)
8H-00 Abnormal increase outlet water temperature
8H-01 Overheating mixed water circuit
8H-02 Overheating mixed water circuit (thermostat)
8H-03 Overheating water circuit (thermostat)
A1-00 Zero cross detection problem
A5-00 OU: High pressure peak cut / freeze protection
problem
AA-01 Backup heater overheated
AC-00 Booster heater overheated
AH-00 Tank disinfection function not completed
correctly
AJ-03 Too long DHW heat-up time required
C0-00 Flow sensor malfunction
C4-00 Heat exchanger temperature sensor problem
C5-00 Heat exchanger thermistor abnormality
CJ-02 Room temperature sensor problem
E1-00 OU: PCB defect
E2-00 Leakage current detection error
E3-00 OU: Actuation of high pressure switch (HPS)
E3-24 High pressure switch abnormality
E4-00 Abnormal suction pressure