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Troubleshooting
Installer reference guide
218
ERGA04~08EAV3(A) + 08S18+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
Summary of Contents for Altherma 3 R F EHVZ04S18E 6V Series
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