Table of Contents
ESIE13-02A
7H Hydro-box: Flow Error
3.4
7H
User interface
display
Method of
The malfunction is detected by the flow sensor.
malfunction
detection
Malfunction
The error is generated in case the water flow is too low or no water flow at all for 15 seconds.
decision conditions
Supposed causes
Closed shut off valve
Air in the system
Clogged water filter
Insufficient water pressure
Too high external static pressure (pump speed setting)
Malfunction of hydro-box pump
Hydro-box pump fuse open [FU2]
During defrost
Malfunction of the backup heater [Q1L]
Backup heater fuse [F1B]
In case of EKSWW(U) / EKHWS(U) / EKHWE
Malfunction of the 3-way valve
In case of the EKSWWU / EKHWSU
Malfunction of the tank thermostat [Q1T, Q3L]
Malfunction of 2-way valve
Malfunction of flow sensor (damaged membrane)
7H-01 waterflow problem
97
Error Codes: Hydro-box
Part 4 Troubleshooting
4
3
4
4
5
Chapters
Table of Contents
Troubleshooting
