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Heater will not switch from standby to on (Red light):
In most cases this will be the result of one of the following points not being met:
Possible Cause 1:
The temperature point set has been achieved. To confirm the
increase of the temperature set, turn the dial to a value greater than
the current water temperature.
Possible Cause 2:
NO FLOW
message
This message is displayed (see Fig.17) only when the heater is not
receiving enough flow. This could be due to the circulation pump
being switched off. The pump is not powerful enough to meet the flow
requirements (See 3.1 Flow requirements). The cartridge filter needs
cleaning or replacing. The sand/glass media filter creates too high a
back pressure and needs a backwash.
Fig. 17
Possible Cause 3:
HEATER DELAY
message
Please refer to Page 9
Possible Cause 4:
OUT OF RANGE
message
This error message will be shown (see Fig.18) in case of the
temperature sensor failure or in case the temperature inside the flow
tube is outside of the measurement range of the sensor (0 - 100°C).
During the winter the time temperature could drop below 0°C.
Fig. 18