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506920−01 09/12
Page 64
Configuring heat strips on Air Handler Control (AHC)
IMPORTANT: After electric heat strips are installed, the Air Handler Control
(AHC) must be manually configured to detect the number of electric heat
sections. (SEE ALSO 506181−01 for complete configuration guide.)
To configure the heat strips so that they will be detected by the thermostat:
S Power must be applied to the air handler but NOT to the thermostat.
Remove thermostat from baseplate or remove wires to thermostat at
the air handler.
S On the air handler control (AHC), unit should be in idle mode (decimal
blinks at 1 HertzĊ0.5 second ON, 0.5 second OFF.
S Select field test modeĊpress and hold the pushbutton until solid –"
appears; release button. Display will blink.
S Press the pushbutton and wait for the display LED to show H" (capital
H), then release the button.
S The AHC cycles the indoor blower motor on" to the selected heat
speed and stages the electric heat relays on" and off" to automatically
detect the number of electric heat sections. The AHC stores the num-
ber of electric heat sections, then automatically exits Field Test
Mode".
S At this point, the icomfort Wi-Fit will now detect the heat strip informa-
tion stored in the AHC.
OUTDOOR
AIR SENSOR
HEAT
1234
COOL
1234
DELAY
1234
ADJUST
NORM + −
HUMIDIFICATION
SMART
AUTO
EVENHEAT
1234
BLOWER
ONLY CFM
100
11 5
130
85
Y1−Y2
2−STAGE
COMPR
R−O
HEAT
PUMP
R−DS
DEHUM
OR
C
W1
W2
G
Y2
Y1
C
R
DH
H
L
O
DS
W3
FUSE 3 AMP
XFMR 24V
24 VAC
COM
3
6
9
1
4
7
XFMR LINE
G
2
5
8
P8
L1
L2
L2 L1
INDOOR
BLOWER
POWER
EARTH
INDOOR BLOWER
SIGNAL
4
5
6
12 3
A92
INTEGRATED
CONTROL
OUTDOOR UNIT
LINK
I + I −
I + I −RC
I + I −
R
C
THERMOSTAT
HUMIDITROL
DH
DISCHARGE
AIR SENSOR
HARMONY
PUSHBUTTON LED