ES 5941Z

Troubleshooting support

7

Troubleshooting support

If no base image or error message is shown on the

display after switch-on, the explanations in the fol-

lowing table may be of use.

Discovery

Possible cause

Remedy

Nothing shown on the display

Controller is not switched on.

External switch is set to OFF.

Check the fuses and set the

external switch to ON.

Wiring is faulty.

Open the controller and check the

wiring!

Status display

STA01 STATUS

n 5: Fault

n 7: Warning

Return to the start page in order to

read the ERROR or INFO code. For

further information, see Ä Chapter

7.1 ‘Error message’ on page 47

and

Ä Chapter 7.2 ‘Info message’

on page 48.

STN1...5 STATUS STATION CAS.

n 104: Error

Return to the start page in order to

read the ERROR or INFO code. For

further information, see Ä Chapter

7.1 ‘Error message’ on page 47

and

Ä Chapter 7.2 ‘Info message’

on page 48.

ZIR07 CIRC. CALIBRATION

n 11: Error – Flow despite being

switched off.

n 12: Error – Flow rate fluctua-

tions too great when the pump

is switched on.

n Check the hydraulics, SEK04

FLOW RATE DHW

> STE15 MIN

FLOW RATE, tapping active or

external circulation

n Check the pump, SEK04 FLOW

RATE DHW

> ZIR08 FLOW RATE

CIRCULATION + ZIR05 TOLER-

ANCE CALI. CIRC

46

03/2024 Item no. 215790 EA no. 1321