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DEHOUST GMBH – GUTENBERGSTR. 5-7 – D-69181 LEIMEN – www.dehoust.com
8. Malfunctions/troubleshooting
Error
Possible causes
Action
Implementation by
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Backflow to side
Dirt accumulation/impurity in the float- shut-off valve in the drinking water- Operator
emergency overflow vent
Valve and emergency overflow
Close line
connection clogged
Flush out the overflow line
Clean float valve,
Service
if necessary, replace
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Storage tank overflows over
Dirt accumulation/impurity in the float- shut-off valve in the drinking water- Operator
emergency overflow connection Valve
Clean float valve,
Service
if necessary, replace
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Storage tank empty
Shut-off valve in drinking water-
Shut-off valve in drinking water-
Operator
Line closed
Open line
Float switch switches
Check float switch
Service
Not correct
reposition, if necessary, replace
Dry-run immersion pressure
Drinking water feed volume
Pressure reducer or shut-off valve
pump
Not sufficient
check and adjust
Service
Dry-run protection is automatically reset after 3 min.. After 4 unsuccessful starts, reset time
interval is increased to 1 hour. After 4 more unsuccessful starts, time
is increased to 24 hours.
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Immersion pressure pump cycles Process water line and/or
Process water line and/or
Operator
Consumer not leakproof
Consumer not leakproof
Immersion pressure pump dirty
Clean immersion pressure pump
Service
Primary pressure in membrane
Primary pressure in membrane-
pressure expansion vessel -
Modify expansion vessel
Service
Tank too small
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Immersion pressure pump
RCD is triggered
Check insulation resistance
Service
switches off
9. Disposal
The packaging material is to be recycled.
The product should be sent carriage free to the manufacturer, DEHOUST GmbH –
department GEP.
