OJ Electronics GreenZone Module MP-Bus Instruktionen Seite 15

OJ GreenZone™ Module MP-Bus
Symptom
Sensor for inlet
temperature
shown incorrectly
Frost alarm
inoperative
Frost alarm
inoperative
Window contact
inoperative
PIR sensor
inoperative
Temperature offset
inoperative
Cause
Fault in the electrical con-
nections
Defective sensor: short-
circuited or disconnected
Incorrect sensor type
Defective OJ GreenZone™
Module MP-Bus
Frost thermostat
connected incorrectly
Defective OJ GreenZone™
Module MP-Bus
Incorrect web configuration
of frost thermostat
Window contact connected
incorrectly
Defective OJ GreenZone™
Module MP-Bus
Incorrect web configuration
of window contact
PIR sensor connected
incorrectly
Defective OJ GreenZone™
Module MP-Bus
Offset potentiometer
connected incorrectly
Defective OJ GreenZone™
Module MP-Bus
© 2017 OJ Electronics A/S
Action
Check electrical connections.
Check sensor. Remove the wires connected
to terminals 30 & 31 and check the resistance
using an ohmmeter.
If the sensor is disconnected, the resistance
will be infinitely high, while a resistance of
approx. 0.0 ohm indicates that the sensor is
short-circuited. If the sensor is OK, a resi-
stance of approx. 1078 ohm will be measured
at a sensor temperature of 20°C.
Replace the sensor if defective.
The sensor must be of PT1000 type, meaning
that the ohmic value of the sensor is approx.
1078 ohm at 20°C.
Replace OJ GreenZone™ Module MP-Bus.
Check cables and connections (see fig. 12).
Replace OJ GreenZone™ Module MP-Bus.
See installer instructions for correct input
configuration.
Check cables and connections (see fig. 12).
Replace OJ GreenZone™ Module MP-Bus.
See installer instructions for correct input
configuration.
Check cables and connections (see fig. 12).
Replace OJ GreenZone™ Module MP-Bus.
Check cables and connections (see fig. 11).
Replace OJ GreenZone™ Module MP-Bus.
English
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