IOM-WR-TapeMat 1526
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Problem
Possible Cause
Solution
Floor heats
continuously.
Incorrect wiring. The control was
“bypassed” when it was wired to
the power supply.
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.
Defective control.
Return control to dealer for replacement.
Control is
not working
correctly.
If a programmable control, the
programming may be incorrect. Carefully read and follow control programming instructions.
Incorrect voltage supplied, or
mismatched components used.
Test voltage, verify parts. See “Incorrect voltage
supplied” above.
Floor sensor is not wired properly,
or is not working properly.
Make sure only one floor sensor is connected to the
control. Also see “Sensor is loose or broken” above.
Loose connection(s) on line side
and/or load side of control.
Remove and reinstall the wire nuts at each connection.
Make sure the wire nuts are tight. Check all connections
back to the breaker.
Defective control.
Return control to dealer for replacement.
Control is not
working at all.
No power is supplied.
Check circuit breaker. Measure voltage at the control.
Check all connections between breaker and control.
Defective control.
Return control to dealer for replacement.
GFCI conflicts
and false-trips
An electric motor or a ballasted
light source is sharing the circuit
with the mat.
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.
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
