Spring Air Systems Truflow-TC Installation and Operating May 2021
17
For any messages not shown in the list please contact Spring Air
Systems Service department for assistance.
Common alarms reported by Touchscreen
:
Message on screen:
Cause:
What to do:
EXHT1 VFD CANOpen Fault
Communications fault between
PLC and VFD.
Check
CAT5
cables
for
proper
connection and pinning.
MUA1 VFD CANOpen Fault
Communications fault between
PLC and VFD.
Check
CAT5
cables
for
proper
connection and pinning.
Exhaust High Amp Alarm
Exhaust motor over maximum
FLA rating.
Check motor for blockage or seized
pulleys. May have burnt wirings
Exhaust Low Amp Fault
Exhaust motor under minimum
amp set point.
Check circuit breaker for full voltage.
Check wiring connections. Check for
broken belts.
Fire Suppression Alarm
Wet Chemical fire suppression
system activated.
Check Fire Suppression micro switch
for annunciation to RPD panel. Should
be on Normally Open contact. Reset
at message screen.
Kitchen AutoStart
Exhaust fan auto starts if heat is
detected under hood without
turning on the system.
Touch the START icon on the
dashboard to turn system ON.
J-Couple Trouble
J-couple
cable
may
have
become disconnected or has
been damaged.
Alarm set point has been
exceeded.
Check j-couple wire connections at
panel and hood exhaust collar.
Possible blockage in exhaust flue.
Check probe and clean.
EXHT Motor Overload Fault
Exhaust motor has exceeded
maximum FLA setting.
Check for motor blockage, seized
pulleys or burnt wiring.
MUA Motor Overload Fault
Supply motor has exceeded
maximum FLA setting
Check for motor blockage, seized
pulleys or burnt wiring.
EXHT Motor Phase Fault
Exhaust motor lost one or more
phases.
Check all wiring connections between
VFD and motor. Check winding
continuity.
MUA Motor Phase Fault
Supply motor lost one or more
phases.
Check all wiring connections between
VFD and motor. Check winding
continuity.
EXHT
Main
Overvoltage
Fault
Exhaust line feed has exceeded
maximum voltage allowances.
Call electrician for further investigation
of overvoltage.
MUA Main Overvoltage Fault
Supply line feed has exceeded
maximum voltage allowances.
Call electrician for further investigation
of overvoltage.
EXHT Main Phase Fault
Exhaust fan line feed has lost
one or more phases.
Call electrician for further investigation
of Phase loss.
MUA Main Phase Fault
Supply fan line feed has lost one
or more phases.
Call electrician for further investigation
of Phase loss.
EXHT Motor Short Circuit
Fault
Exhaust motor has an open
disconnect or contactor or loose
wiring between VFD and motor
Check motor for burnt windings, open
contactors or disconnects or loose
connections inside motor
MUA Motor Short Circuit
Fault
Supply motor has an open
disconnect or contactor or loose
wiring between VFD and motor
Check motor for burnt windings, open
contactors or disconnects or loose
connections inside motor
EXHT Main Under voltage
Fault
Exhaust fan line feed has
insufficient voltage to run motor.
Call electrician for further investigation
of under voltage.
MUA Main Under voltage
Fault
Supply
fan
line
feed
has
insufficient voltage to run motor.
Call electrician for further investigation
of under voltage.
