Fault tracing
Indicator lamp does not light on the GSM modem
Check that the power supply to the GSM modem is connected and functioning.
The indicator lamp flashes each second on the GSM modem.
Check that a SIM card has been fitted to the GSM modem and that there is mobile
telephone network coverage. Coverage is indicated by the indicator lamp lighting
every third second.
The text from the display card disappears when the cable to the modem is connected.
The adapter is facing the wrong way, towards the pin block.
The text Mo d e m is not displayed under O p e ra tio na l d a ta .
The modem is not connected to the display card.
The power pack is not connected to the modem.
Check the program date under operational data. Earlier program dates do not have the
SMS function.
The text Mo d e m No is displayed under O p e ra tio na l d a ta .
The text Mo d e m No is always displayed for a minute after power connection.
The power pack is not connected to the modem.
No numbers appear after the text Mo d e .
This indicates that no messages have been received.
Activate the number of the mobile telephone which is to receive SMS messages using
the command 'activatenumber'.
Check that the SIM card is not full with messages, which will prevent further
messages being received.
The expected indoor temperature value is not changed when the command 'indoor[xx]' is
used.
Activate the number of the mobile telephone which is to receive SMS messages with
operation data.
Check that the SIM card is not full with messages, which will prevent further
messages being received.
No response from 'operationdata' command.
Activate the number of the mobile telephone which is to receive SMS messages with
operation data.
Check that the SIM card is not full with messages, which will prevent further
messages being received.
No response from the SMS module.
Check that there is still credit on the SIM card if it is a prepaid mobile subscription.
Check that the SIM card is not full with messages, which will prevent further
messages being received.
20