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X X
No steam pro-
duction. Display
reads: Stand-by
• Safety interlock is open. • Identify malfunction and repair.
If necessary, install a jumper be-
tween terminals 1 and 2.
Warning: Remove installed
jumper after malfunction is re-
paired.
•
•
If no safety interlock is present, for exam-
ple a max.-hygrostat, absence of a jump-
er between terminals 1 and 2 prevents
unit start-up.
If the humidity exceeds the hygrostat’s
set value, there will be no demand.
•
•
Install jumper between termi-
nals 1 and 2.
Check settings, increase de-
sired humidity value if needed.
Check hygrostat function.
Note: Performing a signal test
and a demand test may yield
additional information about the
problem.
• If the control signal adjustment is incor-
rect, the unit cannot operate.
• Check settings of parameters
“E3” and “U6”.
X
Maintenance
The system
switches off after
60 min. in opera-
tion in cylinder
full condition.
• Unit requires maintenance:
- Cylinder full of scale deposits wich limit
the electrodes immersion depth.
- Electrodes worn out.
•
•
Clean steam cylinder and elec-
trodes or replace electrodes.
Replace electrodes. (If elec-
trode wear is high, see note in
section „Electrode Exchange“ in
unit handbook)
• Phase defective (external fuse faulty). • Replace fuse.
• Phase L3 is not fed through current trans-
ducer ring.
• Feed phase through current
transducer ring.
• With very low water conductivity continu-
ous steam production is insufficient in or-
der to concentrate and raise the water
conductivity.
• Establish water values and/or
contact HygroMatik about the
problem.
XX
Maintenance K1
The system still
operates.
• According to manufacturer specification
90% of the electrical lifetime is achieved.
To avoid failure, a replacement of the
main contactor is recommended in the
short term.
•
•
Replace main contactor.
See parameter description "P11
reset main contactor interval" for
Comfort / Comfort Plus control
or "Brief Description of Jump-
ers" for Basic control.
LED
Display
HE ***
ESH***
Message / Mal-
function Dis-
played*
Probable Cause Resolution
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