Nordmann Engineering AT4 D - Sensor and Standby Mode Faults; Sensor Signal Missing and Standby Failures; Fault Elimination Notes and Error Reset; DANGER: Electric Hazard During Fault Fixes

70
Warning Error Cause Remedy
LED Display LED Display
Temperature or humidity sensor
signal missing
Temperature or humidity sensor
signal missing for more
than 1 minute
–––
Warning
W32: Sensor void
red
lights
Error
E32: Sensor void
No sensor signal present at signal input. Check sensor , replace if necessary. Inspect
wiring.
Standby mode of
steam cylinder active
Standby mode of
steam cylinder failed
–––
Warning
W36: Idle Mode active
red
lights
Error
W36: Idle Mode failed
Automatic standby operation (Standby-
Drain, AntiFreeze, KeepWarm) of steam
cylinder active or failed.
Warning status: No measures must be taken.
Error status: Check water supply, heating
voltage supply, main contactor.
Forced draining of
steam cylinder active
–––
Warning
E37: Forced Drain
––– ––– Forced draining of steam cylinder active. No measures must be taken.
7.3 Notes on fault elimination
DANGER!
Danger of electric hazard!
For the elimination of faults set the steam generator out of operation as
described in chapter 4.4, separate the unit from the mains and secure
it against inadvertent power-up.
The elimination of faults must be carried out by qualied and well trained
professionals only.
Malfunctions relating to the electrical installation (e.g. replacement of the
backup battery, replacement of fuses) must be repaired by authorized
personnel or by your Nordmann representative’s service technician only.
Repair work and the replacement of faulty components must be carried out
by your Nordmann representative’s service technician only!
7.4 Resetting the error indication (red LED lights)
To reset the error indication:
Disconnect the steam generator from the mains. Wait approx. 5 sec-
onds, then reconnect the unit to the mains.
Note: If the fault has not been eliminated, the error indication reappears
after a short while.