Franklin Q-link, Installation, Programming Operation, & Maintenance Manual

Page: 101 / 125

101
Fault Cause

Remedy
Limit Switch Occurs when: The Damper
Switch input is not detected
within an adjustable time
delay (VFD ‐ 07) when using
Damper Mode (VFD ‐ 06).

Ensure a Damper switch is being
used and wired to appropriate
Digital Input set for Damper Switch.
Ensure the Damper Time Delay
(VFD ‐ 07) is set to a longer time than
it normally takes to open the
Damper and close the Damper
Switch.
Damper Overload (L) Occurs when: The Damper
current exceeds 0.5A

Ensure rating of the Damper Motor
does not exceed 0.5A

Ensure Damper is not blocked or
stuck and is free ‐ moving.
No Flow (L) When flow switch is open
for time delay during no
flow condition in VFD run
mode, VFD will trip.

Check if time delay is not long
enough to provide flow during start

Check if there is a suction pressure
or water in well.

Check if pump did not fail
‐ External Trip (M) Occurs when: any digital
input set for EXT TRIP is
activated.

Resolve reason for external trip
signal.

Disconnect trip signal connection to
digital input.
Power Board Error
(M)
Indicates a problem with the
power board.

Consult factory
Control Board Error
(M)
Indicates a problem with the
firmware. When it happens,
the control board reboots
and this faults immediately.

Consult factory
VFD Cooling Fan (L) Fan is either unplugged,
damaged, or has slowed
down significantly

Check it’s plugged in, clean it, or
replace it. Fan is rated at 3800 RPM
and the fault triggers below 2280.
Power Board
Communications Error
(M):

Consult factory
Overpressure (A) Occurs when: System
pressure exceeds over
pressure trip level setting.

Check over pressure level in:
Primary ‐ 64

Can be caused by pressure
overshooting because P ‐ Gain setting
is too high. Decrease P ‐ Gain value if
necessary.

Check if pump is oversized for the
application and demand changes
rapidly.
BMS Communications
Loss (A)
Occurs when: Run Command
Source or Speed Source is set
to Comms, and the signal is
not detected

Check wiring and signal from BMS
system to VFD

Verify that BMS is sending proper
run command and/or speed signal