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10
Instructions for user - 9120-15002 - MCX - 801052 - March 2012 v1.01
9. Maintenance
• The appliance and fittings should only be cleaned with a damp cloth. Do not use abrasive or chlorine-based cleaning agents or sol-
vents.
• Keep the control panel area dry!
• Clean the jet regulator regularly and replace as necessary.
• Dirt and scale deposited in the pi
pes and appliance will affect its function. Typical indications of this are a reduced flow rate or noisy
flow. In such cases, have the appliance inspected by a qualified technician and, if necessary, have the filter in the cold-water inlet
cleaned.
10. Fault finding
Repairs should only be carried out by qualifi ed tradespersons familiar with electric instantaneous water heaters.
All service work should be performed by an authorized Zip service technician – for details of the full range of services available call Zip
Service on 1800 460 222.
When calling for service, please always specify the appliance model and serial number.
The following table will be helpful in determining the causes of some common problems and their solutions.
Problem Cause Solution
Cold water at outlet
Circuit breaker tripped Reset circuit breaker
Water fl ow is not suffi cient Increase the water fl ow to the appliance
Slow water fl ow rate at outlet
Flow controller not fi tted
Fit the correct fl ow controller (see Section 6) or
contact Zip Service
Water pressure not suffi cient Contact Zip Service
Dirt in the pipes Clean fi lter, if problem persist, contact Zip Service
No water at outlet Water supply is turned off Turn on water supply
Appliance switches itself on and
off
Varying water pressure / fl ow rate is too low
Clean fi lter, increase the water fl ow to the appli-
ance. If problem persist, contact Zip Service
Hot water temperature not stable
during use
Supply voltage varies / Water connections
reversed
Contact Zip Service
Hot water temperature too low
and/or one LED fl ashes slowly
Flow rate is too high
Adjust the fl ow either at the tap, the valve or the
fl ow adjustment screw. Zip Service should be
contacted to adjust the fl ow adjustment screw
Voltage supply is too low Contact Zip Service
Faulty heating element Contact Zip Service
One LED fl ashes fast and water
remains cold
Defective temperature sensor Contact Zip Service
Faulty heating element Contact Zip Service
All LEDs fl ashing fast and water is
warm
Defective control panel Contact Zip Service
All LEDs fl ashing fast and water
is cold
Defective power unit Contact Zip Service
LEDs turn off shortly after key
press
Keylock function is active Deactivate Keylock, see instructions on page 8
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