Multi Floor Controller
PK3661
03-19
13
5.0 Annex A Quick Troubleshooting Guide
4. Relay Expansion Board Troubleshooting
CAUTION
WARNING
IMPORTANT
The power for the MFC must be turned off before connecting or disconnecting the Relay Expansion Board.
NOTE: The Relay Expansion Board relay outputs are designed to be “Fail Safe” during a power failure or
fire alarm: the Normally Open contact will be closed, and the Normally Closed contact will be open.
Symptom
Action
LEDs on the Relay
Expansion Board are
off
- Verify that the ribbon cable between the MFC controller and the Relay
Expansion Board is connected properly. If it is not connected, turn the power
off, connect the cable, and turn the power back on.
- Verify that the Fire Alarm input is not active (Input contact closed, Fire Alarm
LED, D47, is on).
- Verify that the relays are not bypassed (the bypass switches SW1 and SW4 on
the Relay Expansion Board should be off).
- Verify that the MFC is not in passage mode.
Relay Expansion
Board relays do not
activate
- Activate the manual bypass switches SW1 and SW3 on the Relay Expansion
Board and verify that the relays are activated and the corresponding LEDs turn
off. De-activate the manual bypass.
- Verify that the address of the Relay Expansion Board selected by the rotary
switch SW2 is correct (The default should be at position 0).
- Verify that the MFC controller is active: the Functionality 1 (D45) and
Functionality 2 (D46) LEDs should blink. If not, reset the MFC Controller: press
the Reset switch (SW1) or disconnect and reconnect the power.
- Activate the Request to Exit by shorting J8-3 to J8-4. All the relays on the Relay
Expansion Board should activate. If not, reset the MFC Controller: press the
Reset switch (SW1) or disconnect and reconnect the power.
- Verify that the MFC controller is programmed properly.
- Verify that the card is encoded properly.
Fire Alarm does not
Unlock door
- Verify that the Fire Alarm input is connected to a Normally Closed contact.
- Verify that the Fire Alarm LED (D47) is normally on and turns off when the Fire
Alarm is present.
- Verify that the 12V_Lock output of the MFC controller is connected to the
COMMON of the locking device relay.
MFC Controller PCB
resets when relay is
activated
- Verify that there is no short-circuit on the locking device wiring.
- If a diode is installed on the locking device, verify the polarity.
