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X
Fault steam-down
• Heater element is defective. • Measure resistance of the heater
element, replace heater element if
needed. Heater element resistance
at 4.5 kW: ca. 36 Ohm and at 6.75
kW: 24 Ohm
Unit shuts off auto-
matically.
• Phase failure. (External breaker has been
tripped or is defective.)
• Replace circuit breaker and identify
cause.
Fault steam-down • Heater element is not being supplied with
current.
• Check cable connections. Measure
voltage.
Unit shuts off auto-
matically.
• Main contactor is not switching correctly. • Check main contactor, replace if
needed..
• PCB does not activate main contactor. • Measure voltage at PCB terminals
12, 13, 14 against N. Replace PCB
if necessary.
X
Message Cylinder
Full
• Nominal current or nominal output not
reached although cylinder filled up to
maximum-limitations electrode. Water imput
is interrupted. Possible causes:
• Continous steam production and
increasing water conductivity can
cause the control lamp to switch off
automatically after a period of
operation time. nominal output is
reached automatically.
Feed a cable through current
transducer ring.
- Water conductivity too low.
- Cold start.
- Re-start following full blow-down.
- Changing water conductivity.
• Check water values and/or contact
HygroMatik.
- Electrodes worn out • Replace electrodes.
• Unit requires maintenance. • See Service section in this manual.
• No electrode supply cable fed through current
transducer ring.
•
XX
Service • The maintenance interval has expired.
The status of the four upper LED is depend-
ing on the momentary operation mode of the
humidifier.
• Service or check steam humidifier.
Reset the maintenance interval at
Parameter P3 “Reset Maintenance
Interval”. With Parameter P2, the
maintenance interval can be ad-
justed to the feed water quality.
LED Dis-
play
HL ***
Hy,C***
Message / Mal-
function Dis-
played*
Probable Cause Resolution
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