Installation Guide

16
4. CONTROLS (CONT’D)
4.3 SETTING UNIT OPERATION IN THE REMAINING 40 MINUTES ON 20 MIN/H MODE AND SETTING UNIT DEFROST CYCLE TYPE
USING VT9W MAIN WALL CONTROL
Press and hold the
MODE key for 3 seconds.
MODE

3 sec.
Two lines are flashing
to show Standby
(default configuration
setting).
The LCD screen will show one of these configurations:
OR
CONT
Recirculation arrows
are turning, rE
flashes and CONT
label appears to show
RECIRCULATION on
low speed.
OR
TURBO
Recirculation arrows
are turning, rE
flashes and TURBO
label appears to show
RECIRCULATION on
high speed.
MODE

TURBO

OR
Use MODE or TURBO key to
see all 3 configurations.

% HUM
Press % HUM key to accept chosen
configuration and go to setting defrost
cycle type.
The LCD screen will show one of these defrost cycle types:
Sd (Standard)
(factory defrost cycle setting).
When needed, the unit will
perform defrost cycle on high
speed.
NOTE: This is the defrost type
used for the data published by
HVI and ENERGY STAR®.
OR
PL (Plus)
Use this cycle in cold region
(outdoor temperature -13°F and
lower). When needed, the unit
will perform defrost cycle on
high speed on a longer period
of time.
OR
dI (Discretion)
When needed, the defrost cycle
will be performed on the same
speed than the unit ventilation
speed. (e.g.: if the unit is set on
TURBO, the defrost cycle will
be done on high speed, and
if the unit is set on CONT, the
defrost cycle will be done on
low speed.
MODE

TURBO

OR
Use MODE or TURBO key
to see all 3 defrost cycle type.

% HUM
Press % HUM key to accept
chosen defrost cycle type and
go to software version display
LCD screen alternates between the
house with circled arrows and the house
without arrow. The numbers under the
house are the software version number.
Press % HUM key OR
wait 10 seconds to exit
user setting menu.

% HUM
CAUTION
Set extended defrost on all units located in climates where the outdoor temperature typically remains below -13°F
(i.e. Bemidji, MN; Duluth, MN; Fargo, ND; Fairbanks, AK) over a 24-hour period for several days in a row, combined
with an indoor humidity of 40% or higher.