Phason Troubleshooting
14740006
7
Troubleshooting
The fan motor will not run
Reset the thermal cutout on the fan motor and allow the motor to cool.
Check the wiring.
Use a test light or voltmeter to test the power at the control.
Replace the fuse. If the fuse blows immediately, a problem exists with the wiring or the fan
motor. If the fuse blows after a delay (minutes, days, or weeks), the load is exceeding the current
rating of the control.
The fan motor growls
To ensure the motor is working, disconnect the line at terminal 1 and terminal 4, and then
connect these lines together. The fan should run at full speed.
Use a short probe (stock probe length) on the MTC-4C to ensure excessive electrical noise is not
being induced onto the probe.
The Temperature knob will not control the fan speed
Check the probe wiring (see page 3.)
Replace the temperature probe (part number MT-P3) if the motor runs at idle or full speed
regardless of the temperature setting.
Contact your dealer if this guide fails to resolve your problem.
