Problem
Incorrect wiring. The control was
"bypassed" when it was wired to
Floor heats
continuously.
If a programmable control, the
programming may be incorrect.
Incorrect voltage supplied, or
mismatched components used.
Control is
Floor sensor is not wired properly,
not working
correctly.
Loose connection(s) on line side
Control is not
working at all.
An electric motor or a ballasted
GFCI conflicts
light source is sharing the circuit
and false-trips
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or
other reproductive harm. For more information: www.watts.com/prop65
Possible Cause
the power supply.
Defective control.
or is not working properly.
and/or load side of control.
Defective control.
No power is supplied.
Defective control.
with the mat.
Solution
Make sure wiring connections are correct. Consult
the wiring diagram on the back of the control the
instructions that came with the control, or the wiring
diagram in this manual.
Return control to dealer for replacement.
Carefully read and follow control programming instructions.
Test voltage, verify parts. See "Incorrect voltage
supplied" above.
Make sure only one floor sensor is connected to the
control. Also see "Sensor is loose or broken" above.
Remove and reinstall the wire nuts at each connection.
Make sure the wire nuts are tight. Check all connections
back to the breaker.
Return control to dealer for replacement.
Check circuit breaker. Measure voltage at the control.
Check all connections between breaker and control.
Return control to dealer for replacement.
Electric motors and other electrical devices can cause
a GFCI to false-trip. Run a dedicated circuit to the floor-
warming system or select a different branch circuit.