Maintenance, Cleaning and Troubleshooting MATRIX control panel
84 PR-2011-0110-GB • Subject to modifications • R9-03-2016
Continu-
ation:
sensor
fault
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.
F
2.6 ST sensor
short-circuit
The supply-air temperature sensor is defective.
➜ Check connection of the sensor, possible short circuit.
F
2.7 ST sensor is
missing
The supply-air temperature sensor is defective.
➜ Check connection to the sensor, possible cable break or
missing, even though the control
(software) requires a sensor.
F
2.8 ext. RT-sen-
sor short-cir-
cuit.
The sensor of the room/return-air temperature is defective.
➜ Check connection to the sensor, possible short-circuit.
F
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
missing, even though the control (software) requires a sen-
sor.
F
2.10 Humidity sen-
sor is missing
The humidity sensor is defective. ➜ Check connection of
the sensor possible cable break or missing, even though
the control (software) requires a humidity sensor .
F
2.11 Pressure sen-
sor missing
The pressure sensor is defective ➜ Check connection to
the sensor, possible cable break or missing, even though
the control (software) requires a pressure sensor.
F
2.12 CO2 sensor
missing
The CO
²
sensor is defective. ➜ Check connection of the
sensor, possible cable break or missing, even though the
control (software) requires a CO² sensor.
F
2.13 Frost protec-
tion thermo-
stat 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 thermostat/sensor.
F
2.14 Internal sen-
sor short-cir-
cuit.
Internal error in the control panel. ➜ Replace control panel. F
2.15 Internal sen-
sor defective
Internal error in the control panel. ➜ Replace control panel. F
2.38 Icing sensor
Energy recov-
ery is missing
Icing sensor for energy recovery has failed ➜ check con-
nection of the sensor, possible cable break or missing,
even though the control (software) requires an icing sen-
sor.
F
2.47 Float switch
defective
A controller reports that the float switch of the condensate
pump is defective.
F
* F = Fault; M = Maintenance; I = Information
Group Code
(FC)
Text
Description ➜ Remedy
Type
*
Confirmation
needed
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