ESIE13-02
Error Codes: Hydro-box
101
Part 4 – Troubleshooting
4
3
4
5
4
3.6
“EC”
Hydro-box: Domestic Hot Water Tank Temperature too High (> 89°C)
Remote controller
display
EC
Method of
malfunction
detection
The malfunction is detected by domestic hot water tank thermistor (R5T).
Malfunction
decision conditions
The error is generated in case the domestic hot water temperature rise above 89°C.
Supposed causes
Malfunction of the domestic hot water tank thermistor [R5T]
Incorrect parameters on the solar pump station
Troubleshooting
[1]: Confirm the maximum allowed tank temperature via solar panels in the installation manual of
EKSOLHWAV1.
Check N . 04
Thermistor resistance check
Is it Normal?
Yes
Yes
Yes
Solar panels are connected
to the tank via EKSOLHWAV1
Replace the thermistor
No
No
Replace the applicable relay
Maximum tank temperature set point via
the solar pump station thermistor is correct?
[1]
Adapt the maximum tank set point
via the solar pump station to the correct value [1]
No
Replace the hydro-box PCB (A1P)
