Excellent GREX.600W.WH, Technical Information

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Device malfunction alert
Heater has built-in malfunction monitoring and alert functions. Device malfunction is signalled in
the following way: the two outer diodes shine with constant light while the middle diode flashes in
the following manner — several flashes followed by a longer break. The number of diode flashes
indicates an error code as described below:
a) “Running in dry conditions” (error code: 2 flashes) — electronic system identified a situation in
dicating too little heating liquid inside the towel rail. Check to see if the towel rail has been pro -
perly filled with heating medium.
b) “Overheating” (error code: 3 flashes) - the temperature of heating liquid inside the towel rail
is too high
• If the heater heats up despite being turned off, it is likely that the electronics have been
damaged. The heater should be returned to the supplier/manufacturer for repair.
• the heater is installed inside a towel rail that is connected to a central heating system with
hot water in the system, an alert does not mean that the heater has been damaged. The
alert signals that temperature of the installation is too high. Please ensure that temperature
of the water inside the installation does not exceed 82° C as this could cause damage to the
heater’s thermal fuse.
c) “Temperature sensor damaged” (error code: 4 flashes) — There is a possibility of electronic
system malfunction. The heater will most likely need repair.
d) “Warning against possible heat escape into the system in central heating installations”
(error code: 5 flashes) — there is a risk of a heat escape into the system if device is operating
with the central heating system on and system water in circulation.
Attention: when closing the central heating installation valves, ensure that 1 valve remains open.
This will prevent pressure in the towel rail from rising excessively.
The malfunction alert may be removed by turning the heater off and on again.
In the case of a malfunction alert, turn the heater off and wait for the towel rail to cool down. Check
the device for a possible cause (referring to the manufacturer “problem solving” guide) and try to
resolve it. If the heater is still signalling malfunction after it is turned on again, you should contact
your supplier or, alternatively, the product manufacturer.