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During normal operation the green power LED will be ON when the Master Controller is energised. The red output Channel LED’s (1 to 8 on
the Master Controller, and 9 to 14 on the Add On Module) will indicate if the channel output relay is
ON/OFF
.
An error / fault message is shown by flashing the green power LED or one of the 8 red output Channel LED’s. From the number of flashes
on any one LED, the problem can be diagnosed, and identified from the following:
The error number will be indicated by the number of flashes, with a pause of less than a 1/2 second between the flashes. The indication will
be followed by a pause of 2 seconds, following which the sequence will be repeated.
Flashing Power LED
(green)
Flashes
Description
Corrective action
1 Flash
One or more Room Sensors, Room Controllers, WLH, WLAC that are set to
channel 0 or channel 15 are no longer sending data to the Master Controller.
If the Room Sensor is of the WIRELESS type, the error/fault message
could be an indication that the power has failed, and that the internal
battery of the Room Sensor needs to be replaced.
The fault is corrected by replacing the Room Sensor. The Master Controller
will need to be HARD RESET (see below).
2 Flashes
One or more Room Sensors have been set to a channel number which does
not exist in the system. For example, the message will occur if the units are
set to channels 9-14 and the required Add On Module are not found in the
system.
The error is corrected by setting the channel number of the Room Sensor to a
channel that does exist within the installed Master Controller/Add On Module.
3 Flashes
Application sensor defect.
The fault is corrected by changing the temperature sensor. If the sensor has
been removed deliberately to change the operation of the system, follow the
HARD RESET instruction below.
4 Flashes
The Outdoor Compensation Module (OC) is defective.
The fault is corrected by changing the Outdoor Compensation Module. If the
module has been removed deliberately to change the operation of the system,
follow the HARD RESET instruction below.
5 Flashes
The external Supply Limit Sensor (type ETF-1899A) is defective.
The fault is corrected by changing the temperature sensor. If the sensor has
been removed deliberately to change the operation of the system, follow the
HARD RESET instruction below.
6 Flashes
Internal overheating.
The Master Controller has its own internal safety temperature protection
system. The problem is corrected by improving the ventilation around the
Master Controller module.
7 Flashes
Defective internal overheat sensor. The Master Controller will control as normal,
however the protection against internal over heating is no longer active.
The fault can only be corrected by replacing the Master Controller module.
8 Flashes
The communication to the Add On Module has been lost.
The fault is corrected by re-establishing the connection to the Add On
Module or by changing the Add On Module if it is defective - or if it has been
deliberately removed, with a HARD RESET.
9 Flashes
Indicates total number of input units exceeded.
Please refer to factory or your local service engineer.
10 Flashes No connection to wireless receiver REHAU RC.
11 Flashes Step 2 on 2-step controller REHAU CT2/2 is used by another Room Sensor/
Controller.
Only one error/fault condition can be shown at a time. If more than one error occurs, they will be prioritised in the sequence of flashes.
tRoUBlESHootIng And ERRoR/FAUlt MESSAgES
ERRoR/FAUlt MESSAgES
13.0
13.2
