
12
|
Troubleshooting
Installer reference guide
194
EPGA11~ EAV23DA6V
Daikin Altherma 3 H F
4P606487-1 – 2019.12
12.4.2 Error codes: Overview
Error codes of the unit
Error code
Detailed 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
7H
07
Water flow problem. Pump
deblocking active
80
01
Entering water thermistor
abnormality of outdoor unit
81
00
Leaving water temperature
sensor problem
81
06
Entering water temperature
thermistor abnormality
(indoor unit)
89
01
Heat exchanger frozen
89
02
Heat exchanger frozen
89
03
Heat exchanger frozen
8F
00
Abnormal increase outlet
water temperature (DHW)
8H
00
Abnormal increase outlet
water temperature
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
AA
02
External backup heater
overheated
AH
00
Tank disinfection function
not completed correctly
AJ
03
Too long DHW heat-up time
required
C0
00
Flow sensor malfunction
C0
01
Flow switch malfunction
C0
02
Flow switch malfunction
C4
00
Heat exchanger temperature
sensor problem