Module Communication Problems; Status Contact Not Working As Expected - Profire Energy PF3100 Troubleshooting Manual

PF3100 TROUBLESHOOTING – SOLUTIONS TO COMMON PROBLEMS

2.1.2 Module communication problems

If a controllers IO are not commissioned (temperature and ignition module MAC addresses allocated to the
controller) the controller will display this alarm. Check the following items if there is a module communication
problem.
1. Confirm that the temperature module has been allocated to the controller by running the temperature wizard.
a. Open the temperature wizard: System Overview > Settings > Temperature Wizard.
b. Go to the Assign Inputs screen.
c. Each controller will be listed with the connected temperature modules displayed. If the temperature
module can be found in this list, then it is communicating properly and needs to be commissioned. If
the temperature module is not in this list, then it is not communicating. Check the PFRN wiring and
make sure the device has power.
2. Confirm that the ignition module has been allocated to the controller by running the ignition wizard.
a. Open the ignition wizard: System Overview > Settings > Ignition Wizard.
b. Go to the Allocate Ignition screen.
c. Each ignition that is used should be allocated to a slot in this table. Open the first slot and check the
MAC address dialog. It should show a list of all ignition modules that are currently connected and
communicating. If the ignition module is in the list, then it is communicating properly and the system
needs to be commissioned. The module must be set to Enabled on this screen in order for it to work.
If it is not in the list, then it is not communicating. Check the PFRN wiring and make sure the device
has power.
2.2

Status contact not working as expected

If the status contact is not working as expected check the following:
1. Check the current mode of the status contact in Settings > Outputs > Status Contact > Status contact
Mode. Make sure this is set to a mode that matches the expected operation of the system.
2. Check the voltage to and from the status contact. The voltage can be 12 or 24VDC or it can be 120VAC.
Turn the system off and confirm only one side of the contact has the signal. Start the system and confirm
that the status contact closes.
3. Check that the current for the input is not exceeding its rating. 80mA is the point where the internal PTC
will begin to open. We recommend not using more than 40mA in a normal application.
4. If using multiple status contacts in series check that the total drop across all contacts is not larger than
what is acceptable. Each contact may drop 1V or more depending on the current through them.
5. If the current draw is too large for the status contact an external relay may be used. The status contact
can power the primary side of a low current relay. The signal back to the PLC or other device can connect
through the secondary side.
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V1.1
Nov 29, 2016
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