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34 / EN
IX.- TROUBLESHOOTING TABLE
Problem
There is no hot water and the
screen DOES NOT turn on.
There is no hot water and the
screen DOES turn on.
The water is not hot enough.
Possible Causes
Power failure or faulty wiring.
activate the resistance (4 L/min).
Restart the water heater.
Possible internal failure.
The water flow entering the heater is too
strong.
The voltage is lower than 240 volts.
Crossed cables.
The ambient temperature has decreased or
the temperature setting is too low.
The water pressure is below 7 psi (0,5 bar).
Too much cold water is added.
Heat loss due to excessively long tubing.
Electrical fault.
Solutions
Check the power supply. Check the breaker.
Make sure the breakers on the main electrical board
are ON. The breaker may be defective or it could be
that the unit is not correctly connected.
line is open.
Consult the manual for the restarting points. Make
the unit. Press all the restart buttons.
Clean the filter screen at the unit's water inlet.
Consult the manual for the restarting points. Make
the unit. Press all the restart buttons.
Call customer the Calorex Service center.
Reduce the water flow from the tap or slightly close
the inlet water supply valve on the unit to reduce
the flow.
This heater is designed to operate at 240 volts. A
lower voltage produces a lower heating capacity.
You may require a heater with more power.
Check the wiring. Make sure it is correct.
Raise the unit's temperature adjustment.
and the water supply line is not blocked.
With tankless heaters, it is not necessary to add as
much cold water as with conventional tank heaters.
Also, it is possible that an anti-scalding device has
been installed in the tap, which mixes the cold
water. This type of device can be adjusted to reduce
the amount of mixed cold water.
As the hot water circulates through the system to
the tap, some of the heat is lost, especially if it must
cover a long distance or if the pipes are cold. This is
normal, and can be compensated by increasing the
temperature adjustment and insulating the pipes.
Please contact a qualified electrician or your local
authorized distributor to solve the problem.
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