MATRIX Control Panel OP71 Maintenance, Cleaning and Troubleshooting
PR-2009-0021-GB • Subject to modifications • R5-04/2016 91
Continua-
tion:
Sensor
error
2.5 Inlet sensor missing The inlet temperature sensor is defective.
➯ Check connection
to the sensor, possible cable break or missing, even though the
control (software) requires a sensor.
2.6 ST sensor-
short-circuit
The supply-air temperature sensor is defective.
➯ Check connection of the sensor, possible short circuit.
2.7 ST sensor is missing The supply-air temperature sensor is defective.
➯ Check con-
nection to the sensor, possible cable break or missing, even
though the control (software) requires a sensor.
2.8 ext. RT-sensor short-
circuit.
The sensor of the room/return-air temperature is defective.
➯
Check connection to the sensor, possible short-circuit.
2.9 ext. RT sensor is missing The sensor of the room/return-air temperature is defective.
➯
Check connection of the sensor, possible cable break or mis-
sing, even though the control (software) requires a sensor.
2.10 Humidity sensor is mis-
sing
The humidity sensor is defective.
➯ Examine connection of the
sensor, possible cable break or not available, even though the
control (software) requires a humidity sensor.
2.11 Pressure sensor missing The pressure sensor is defective
➯ Examine connection of the
sensor, possible cable break or not available, even though the
control (software) requires a pressure sensor.
2.12 CO2 sensor missing The CO
² s
ensor is defective. ➯ Check connection of the sensor,
possible cable break or missing, even though the control (soft-
ware) requires a CO² sensor.
2.13 Frost protection ther-
mostat is missing
The frost protection thermostat/sensor is defective.
➯ Check
connection of the sensor, possible cable break or missing, even
though the control (software) requires a frost protection ther-
mostat/sensor.
2.14 Internal sensor short-
circuit.
Internal error in the control panel.
➯ Replace control panel.
2.15 Internal sensor defective Internal error in the control panel.
➯ Replace control panel.
2.38 Icing sensor Energy
recovery is missing
Icing sensor for energy recovery has failed
➯ check connection
of the sensor, possible cable break or missing, even though the
control (software) requires an icing sensor.
2.47 Adiabatic cooling A controller reports that the float switch of the condensate pump
is defective.
Error group Error-
number
Error text Error description ➯ Error correction
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