Technical data

52
CTC EcoZenith i250
General Information
Current Monitor
The CTC EcoZenith i250 has an integrated current monitor. If the system
is fitted with a current sensor, the property’s main fuses are continuously
monitored to ensure they are not overloaded. If this should happen, electric
stages are disconnected from the CTC EcoZenith.
The electrical power of the CTC EcoZenith i250 may be restricted where high
heating requirement levels are combined with, for example, single-phase
motor heaters, cookers, washing machines or tumble dryers. This may result
in inadequate heating or hot water temperatures. If the CTC EcoZenith is
restricted, “High current, elpower redu (X A)” appears in text form in the
display. Consult an electrician to determine whether the fuse size is correct
or the three phases in the house are evenly loaded.
Air problems
If you hear a rasping sound from the tank, check that it has been properly
bled. Turn the boiler vent valve so that any air can be evacuated. Top up with
water where required, so that the correct pressure is achieved. If this noise
recurs, call a technician to check the cause.
Unusual noise when shutting off DHW
In some cases, unusual noises may be produced by the house's pipe
system and the CTC EcoZenith i250 due to the jolts which occur when the
flow is quickly interrupted. There is no fault with the product, but the noise
may occur when older model outlets are used. More recent outlets are
often fitted with a soft-closing mechanism. If an unusual sound comes from
hard-closing dishwasher and washing machines, this can be remedied using
a shock arrestor. A shock arrestor can also be an alternative to soft-closing
water taps.
!
Don’t forget that the
radiators may also
need bleeding.
Vent valve
Motor protection (when heat pump is connected)
The CTC EcoZenith i250 constantly monitors the compressor’s operating
current and an alarm is triggered if the compressor is using an unusually high
current. When a fault occurs the message "Motor protect high current" is
displayed.
The cause of the fault may be as follows:
• Phase failure or mains interruption. Check the fuses, which are the
most common cause.
• Compressor overload. Call out a service engineer.
• Faulty compressor. Call out a service engineer.
• Inadequate circulation between the heat pump and boiler. Check the
heat medium pump (left pump, viewed from front). Call out a service
engineer.
• Abnormally high temperature in the brine circuit. Call out a service
engineer.