© Munters AB, 2018
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1. If signal does not improve, insert the SIM card into a cell phone and check the signal (GSM
only).
2. If the signal is weak, check with your service provider.
3. If the signal is OK, change the module.
4. If no signal exists:
o
Check antenna connection.
o
Check connection to the module (GSM).
o
Check the wiring. If there is a problem, contact the dealer.
Refer to the appropriate section in Appendix A: Replacing communication cards and modems, page 54
for detailed instructions on exchanging the modem.
•
Text test failure in menu (refer to Testing the text function, page 29).
The modem has to be placed in a way that ensures sufficient signal strength. To improve signal
strength, the antenna can be moved to another position. Signal strength may depend on how close
the modem is to a radio base station. You must ensure that the location, at which you intend to use
the modem, is within the network coverage area
12.4
RF communication
No RF connection
Figure 12: RF Card Location
•
Check the signal strength (refer to Testing the Radio RF signal, page 36).
o
If it is weak, change the antenna location.
o
If the strength is zero:
1. Check the baud rate and the channel address (refer to Configuring the channel settings,
page 34). Correct if needed.
2. Ensure that the Communicator’s baud rate matches the controllers’ baud rate.
•
Check RF card configuration: