Flex-a-Lite 67100 Cherokee XJ Radiator Only Kit Fits 1987-2001 Jeep Cherokee XJ - Manual (Page 6)

The Flex-a-lite Limited Warranty
Flex-a-lite Consolidated, 7009-45th St. Ct. E. Fife, WA 98424, Telephone No. 253-922-2700, warrants to the original purchasing user, that all Flex-a-lite
products to be free of defects in material and workmanship for a period of 365 days (1 year) from date of purchase. Flex-a-lite products failing within
365 days (1 year) from date of purchase may be returned to the factory through the point of purchase, transportation charges prepaid. If, on inspection,
cause of failure is determined to be defective material or workmanship and not by misuse, accidental or improper installation, Flex-a-lite will replace the
product free of charge, transportation prepaid. Flex-a-lite will not be liable for incidental, progressive or consequential damages. Some states do
not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives
you specific legal rights and you may have other rights, which vary from state to state. The Flex-a-lite warranty is in compliance with the Magnuson-Moss
Warranty Act of 1975.
Rev. 06-12-13 98108 Page 6 of 6
Troubleshooting the Variable Speed Controller
Problem Possible Cause How to find out Solution
Fans do not turn on
regardless of
temperature.
Ignition wire not hooked
up to proper source.
Make sure you have a
switched source hooked up
to terminal number 9. Turn
your key on and LED #4
should light after 5-6
seconds.
If there is no light, then provide
a 12 volt source to terminal
number 9.
LED #4 lights up, but
my fans still do not
turn on.
Thermistor probe may
not be hooked up
properly.
Remove the thermistor
probe from the circuit
board. Place a jumper
across terminals 10 & 11.
Remove the connectors and
make sure that the 22 gauge
wire is doubled up before the
new connector is installed to
ensure proper contacts.
I have tested the
thermistor probe but
the fans still do not
turn on.
Fuse to battery positive
post blown.
Wires attached to short
wire leads 1 & 4 aren’t
properly hooked up.
Inspect the fuse in the
holder.
Check for ground and
power through lines hooked
to short wire leads 1 & 4.
Replace fuse.
Hook up wires to short wire
leads 1 & 4 to ground and
power, respectively, to battery.
Fans still do not come
on.
Motors wired improperly. Remove the wires from
terminals 2 & 3 and hook
them directly to power and
ground to check motors.
Check wiring to motors to
ensure they are wired properly.
If motors do not spin after
checking wiring to them, call
tech support at
1-800-851-1510.
Fans come on and it
seems like they are
only at 100% instead
of the initial 60%.
They are actually on at
60% and haven’t
reached 100% yet.
Ground terminal 6. This is the fan at 100%
Fans do not come on
until the temperature
is very hot.
Thermistor probe not
located in optimum
position.
Temperature set to high.
Check location of thermistor
probe.
Locate temperature screw
in center of VSC.
Note: maximum of
rotation of screw is ¾ of a
turn!
Thermistor should be located
nearest the upper radiator
hose.
Turn adjustment screw until
fans come on. Turning further in
this direction will keep engine at
a lower temperature.
Fans were working
properly but have
suddenly shut down.
Usage of a chassis
ground and/or alternate
source for power other
than positive terminal on
battery.
Trace wire from short wire
leads 1 & 4 to find source.
Move to posts on the battery.
I turn my engine on
and the fans come on
but the engine is cold.
A/C lead hooked to the
wrong terminal.
A/C turned on.
Trace the wire hooked to
either number 7 or 8
terminal and check polarity
of the wire.
Check if defrost activates
a/c or if the a/c is on.
Hook the wire to the proper
terminal on the a/c compressor
and the corresponding terminal
at the VSC.
Shut off a/c or leave on as this
is normal operation.
Rev. 05-22-13 99993