Installer’s Guide
SYSTEM CHECK-OUT – HEAT PUMP
Verify that the kit is installed and wired per the instruc-
tions contained within this installer’s guide. (J5-Blue
connected to “B”, J5-Yellow connected to “Y”, J5-
Orange connected to “O”, Liquid sensor installed and
connected, Ambient sensor installed and connected).
If uncertain about dip switch settings (S2-1, 2, 3, 4),
leave in the factory preset position.
Apply power to the unit. Apply “Y” and “O” control sig-
nal.
VerifythegreenLEDisflashingat1/2secondON1/2
second OFF rate.
Verify no red LED faults are present.
The fan should run continuously for a minimum of
10 seconds after “Y” and “O” have been applied. After
10 seconds the control may begin to cycle the fan if the
ambient outdoor temperature is 70 deg. or below. If the
fan is cycling and the outdoor temperature is below 70
deg., the control is working. If after 10 seconds of “Y”
application the fan is on continuously, the TEST Switch
(S1) may be used to verify the Control Module has con-
trol over the fan. Momentarily depress the TEST Switch
(S1) on the Control board. The fan should then cycle 3
secondsonthen3secondsofffor12seconds.
NOTE:
If the green LED is full on with a blink/flicker OFF
every second make certain the orange wire from the
control board is connected to “O” per these instruc-
tions and the “O” signal is present.
The control board will leave the fan ON continuously
during heating mode, i.e., No “O” signal present. The
greenLEDisfullonwithablink/flickeroffeverysecond
in the heating mode.
About Trane and American Standard Heating and Air Conditioning
Trane and American Standard create comfortable, energy efficient indoor environments for residential applications.
For more information, please visit www.trane.com or www.americanstandardair.com
The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications with-
out notice. We are committed to using environmentally conscious print practices.
© 2020
18-HE46D1-3B-EN 08 Jul 2020
Supersedes 18-HE46D1-3 (July 2004)