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Problem
Test Steps
Next
1
The LV switch
does not control
the relay or group.
Is it terminated correctly in the panel?
See pages 4 & 8.
No – Correct terminations
Yes – Go to next step
Is the 12VDC indicating LED on the C8
motherboard solid Green?
No – Cycle power to panel; recheck
Yes – Go to next step
Does the board mounted override
pushbutton control the relay or group?
No – Call tech support
Yes – Go to next step
Disconnect input terminals.
Does jumping the Red to White input
terminals turn the relay on and does
Black to White turn it off?
No – Call tech support
Yes - Verify the LV wiring is not shorted
and that the switch is operating
correctly
If using a Group switch, have the relays
been assigned to the particular group
using the GS card?
No – Make the necessary assignments
(refer to page 9)
Yes – Go to next step
2
When I try to
turn the relay
off it goes off for
a second then
comes back on.
Is this relay scheduled using the “AS
Manual ON/Auto OFF” or the “AS
Automatic ON/OFF” scenarios.
No – Go to next Step
Yes – The relay can only be overridden
OFF during unoccupied periods
Remove any LV switching that is landed
at the relay input and attempt to turn
relay ON using the board override
buttons.
No change in status - Go to next step
Relay functions normally - Verify the
LV wiring is not shorted and that the
switch is operating correctly
Move LV relay connection to a different
point on the RD board and attempt to
override the relay on.
No change in status - relay needs to be
replaced - call tech support
Relay functions properly – circuit
board needs to be replaced - call tech
support
3
When I try to
turn the relay on
it comes on for
a second then
comes back off.
Remove any LV switching that is landed
at the relay input and attempt to turn
relay ON using the board override
buttons.
No change in status - Go to next step
Relay functions normally – Verify the
LV wiring is not shorted and that the
switch is operating correctly
Move LV relay connection to a different
point on the RD board and attempt to
override the relay on.
No change in status - relay needs to be
replaced - call tech support
Relay functions properly – circuit
board needs to be replaced - call tech
support
4
My EM24-A2
photocell does not
turn the relay on
or off.
Is the relay scheduled using the
“Photocell ON/OFF” or “Photocell and
Schedule ON/OFF” scenarios?
No – Make the necessary schedule
changes and test again.
Yes – Go to next step.
Remove the photocell wires or
connector and jumper from Red to Red.
Do the relays turn on/off?
Note: If using the “Photocell and
Schedule ON/OFF” remember to
adjust the clock time to be within your
occupied times before doing the jumper.
No – Call tech Support
Yes – Verify the LV wiring is not shorted
and that the photocell is operating
correctly on the roof.
TROUBLESHOOTING
Page 10
