SYX66x Commissioning Guide
V1.10.3 300117
Page 56 of 61
14.
Alarms and Management
14.1
Sensor Alarms
All Sensors are monitored for correct connection. Messages will be populated based on the time and date of
disconnection. It is essential that wiring of sensors is made when the controller is isolated from a power supply to
avoid unwanted alarms.
14.2
Sensor Allocation Reset
Any sensors that have been connected to the controller will then be used by the application and monitored onward
for ongoing faults.
If an error is made during the wiring of the sensors during commissioning or during a service visit then the sensor
allocations may need to be re-set to avoid sensor alarms.
To do this, first complete any wiring changes required.
Press Once the Alarm Reset (lower button on the left of the controller facia) this will bring the backlight of the
controller waking it into action.
When the back light of the controller has come on then hold the same Alarm Reset Button on the controller facia
for 30 seconds. Once this process has completed the Manual Override Lamp on the controller facia will flash for 3
seconds to confirm this is complete (This will not affect any manual override conditions in place). You can then
release the Alarm Acknowledge button.
Once this process is complete, the sensor alarms in the memory may take up to 2 minutes to clear. The message
history can then be fully cleared by holding the Alarm Reset button once more but for 5 seconds. The Malfunction
LED will turn off when this process is complete.
Your currently connected sensors will then be as you require them and no unwanted sensor alarms will be
monitored.
14.3
Optimiser Alarm
If the controller detects that the warming up rate is below 0.5°C/Hour then the controller will stop any further
adaption and raise a system malfunction message.
The rectification for this malfunction message is for the user to manually reset the optimiser Warming rate to a
new value greater than 0.5. This is achieved by logging in at level 2 and setting the Warming Up rate to the new
value (e.g. 1.5).
The reason for the slow run up rate should then be investigated. Typical reasons are as follows:
•
Faulty Heating Plant (Boiler/Pump)
•
Isolated or disabled heat source in the room where the sensor is located.
•
TRV set too low
•
Secondary controls not permitting the Day Set point to be achieved (TRV, Room Thermostat for Convectors
or Underfloor System for example)
•
Room Sensor in poor location and not being influenced by heating system being controlled
If there are costs associated to the resolution and the change cannot be made swiftly then the Optimiser adaption
should be inhibited until the change can be made. Plant performance can be monitored using the log display of the
control mode status:
