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Installation instructions & user manual
9120-25693 v3.00 Oct 2018 - ZIP CEX
Technical support
Tel: 0345 6 005 005 email: service@zipindustries.co.uk www.zipwater.co.uk
FAULT FINDING
Problem Cause Solution
Water stays cold, digital
display does not light up
Circuit breaker tripped Reset circuit breaker
Safety pressure cut-
out tripped
Contact Zip Service to reset
SDB
Water stays cold, digital
display does light up
Safety thermal cut-out
tripped
Contact Zip Service to reset
STB
Display flashes error
message “Er“
Control system has
switched off
Switch fuse off and on. If
“Er“ still flashes contact Zip
service
Poor hot water flow rate
Outlet fitting dirty or
calcified
Clean shower head or tap
nozzle
Fine filter dirty or
calcified
Contact Zip Service to clean
fine filter
Selected temperature not
achieved, “MAX“ lights up
Excessive water flow
rate
Reduce water flow rate at the
outlet
Selected temperature not
achieved “MAX” does not
light
Cold water has been
added at the outlet
Set for required temperature
and tap hot water only
Symbol “sun“ lights up
Inlet temperature
exceeding set point
Reduce inlet temperature
Water heats up but display
fails to operate
Display lead plug not
properly connected
Contact Zip Service to
connect display lead correctly
If the connection cable is damaged, it must be replaced with an original spare cable
from the manufacturer by an authorised technician in order to avoid any hazards.
If you cannot rectify the fault with the aid of the troubleshooting table, please contact
custo mer service.
• Repairs should only be carried out by competent persons familiar with electric
instantaneous water heaters.
• All service work should be performed by an authorized Zip service engineer – for
details of the full range of services available call Zip on 0345 6 005 005.
• When calling for service, please always specify the appliance model and serial
number.
This instantaneous water heater was manufactured, thoroughly inspected & tested
before delivery. Use the following fault finding information to diagnose the fault or seek
remedial action.
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