LS
MS
HS
115
VAC
NTL
LS
MS
HS
115
VAC
NTL
LS
MS
HS
115
VAC
NTL
LS
MS
HS
115
VAC
NTL
WD-03, 1-Speed ECM Fan WD-04, 2-Speed ECM Fan
WD-06, 2-Speed ECM FanWD-05, 3-Speed ECM Fan
115VAC
Power
115VAC
Power
115VAC
Power
115VAC
Power
High Speed High Speed
High SpeedHigh Speed
Med Speed
Low Speed
Low Speed
Low Speed
Ground Ground
GroundGround
Fan Fan
FanFan
Power Power
PowerPower
Screw Screw
ScrewScrew
Electrical box
on the Fan.
Electrical box
on the Fan.
Electrical box
on the Fan.
Electrical box
on the Fan.
FC3J Control FC3J Control
FC3J ControlFC3J Control
115VAC 115VAC
115VAC115VAC
Neutral Neutral
NeutralNeutral
*Black wire from fan motor may be
solid black or black with white stripe.
*Black wire from fan motor may be
solid black or black with white stripe.
*Black wire from fan motor may be
solid black or black with white stripe.
*Black wire from fan motor may be
solid black or black with white stripe.
26072 Merit Circle #110 / Laguna Hills, CA 92653
949-916-0945 Fax 949-458-8502
www.eControlsUSA.com
Warranty
This thermostat is warranted to be free of defects due to workmanship
or materials under normal use and service for a period of 5 years from
date of installation and not longer than 6 years from manufacturing
date code.
eControlseControls
Ensure that the cable is completely plugged into the “RED”
connector on the WTT and the FC3J. You should hear the
connectors click. Ensure that the fan is powered. Ensure the
wiring from the FC3J fan control to the whole house fan is
correct.
Ensure that the number of speeds set in Step 7 correspond to
the type of fan installed - 1-speed, 2-speed or 3-speed fan.
The WTT LCD is not lit.
Fan speeds available is not correct.
TROUBLESHOOTING
If On is not blinking and the WTT is in Temperature Control,
make sure the Set To temperature is a few degrees lower than
the Indoor temperature. On will blink when the fan is running.
If an outdoor temperature sensor is installed and the outdoor
temperature is above the limit set, whole house fan operation
may be delayed. When delayed, “LIMIT” blinks.
If On is blinking but the fan is not running, check the wiring
from the FC3J fan control to the whole house fan.
The display indicates On but the fan is not running.
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