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CBX32MV
Delay Profile 2
Cooling — Air Conditioner and Heat Pump:
A
B
C
OFF
OFF
100% CFM
100% CFM
COOL
ING
DEMAND
45 SEC.
A
When cool demand is initiated, motor ramps up to
100% and runs at 100% until demand is satisfied.
B
Once demand is met, motor runs at 100% for 45
seconds.
C
Motor ramps down to stop.
Heating — Heat Pump only:
OFF
OFF
100% CFM
100% CFM
HEATING DEMAND
45 SEC.
30 sec
delay
A
B
C
D
A
When heat demand is initiated, 30 seconds motor
on delay starts
B
After the motor on delays expires, motor ramps up
to 100% and runs at 100% until demand is
satisfied.
C
Once demand is met, motor runs at 100% for 45
seconds.
D
Motor ramps down to stop.
Delay Profile 3
OFF
OFF
82%CFM
100% CFM
COOLING DEMAND
7 1/2 MIN
A
B
C
A
When cool demand is initiated, motor ramps up to
82%
B
Motor runs at 82% for approximately 7.5 minutes
and then ramp up to 100% (unless the demand has
been satisfied) and motor runs at 100% until
demand is satisfied.
C
Once demand is met, motor ramps down to stop
Delay Profile 4
OFF
OFF
1/2 MIN
50% CFM
COOLING DEMAND
7 1/2 MIN
82% CFM
100%
CFM
1/2 MIN
50% CFM
B
A
C
D E
A
When cool demand is initiated, motor ramps up to
50%
B
Motor runs at 50% for 30 seconds and ramps up to
82%
C
Motor runs at 82% for approximately 7.5 minutes
and then ramp up to 100% (unless the demand has
been satisfied) and motor runs at 100% until
demand is satisfied.
D
Once demand is met, motor runs at 50% for 30
seconds.
E
Motor ramps down to stop
DISPLAY
An on-board single character LED display (see Figure 19
for LED display location) indicates general system status
information such as mode of operation, indoor blower CFM
and error codes. Multi-character strings are displayed with
character ON for one second, OFF for 0.5 seconds and one
second pause between the character groups.
Table 10. AHC System Status Codes
AHC Single Character
Display
Action
Letter or Number
Unit Size Code displayed represents air handler model size and capacity. See
Configuring Unit Size Codes
in Figure
21.
I
f three horizontal bars are displayed, AHC does not recognize air handler model size and capacity. See Configuring
Unit Size Codes in Figure 21.
.
Idle mode (decimal point / no unit operation)
A
Cubic feet per minute (cfm) setting for indoor blower (1 second ON, 0.5 second OFF) / cfm setting for current mode
displayed
.
Example:
C
Cooling stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat
codes).
Example
or
d
Dehumidification mode (1 second ON) / 1 second OFF) / cfm setting displayed / Pause / Repeat Codes)
d F
Defrost mode. (Y, W and O call)
H
Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat
codes. Example:
or
or
h
Variable Capacity Heat (1 second ON, 0.5 second OFF) / % of input rate displayed / Pause/ cfm setting / Pause/ Re
peat codes. Example:
or
U
Discharge air sensor temperature (indoor blower must be operating)
