Display; Ahc System Status Codes - Lennox CBX32MV-018/024 Manual

Delay Profile 2
Cooling — Air Conditioner and Heat Pump:
100% CFM
A
OFF
COOL­
ING
DEMAND
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:
100% CFM
A B
OFF
30 sec
delay
HEATING DEMAND
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
B
7 1/2 MIN
A
OFF 82%CFM
COOLING DEMAND
AHC Single Character
Action

Display

Unit Size Code displayed represents air handler model size and capacity. See Configuring Unit Size Codes in Figure
Letter or Number
21.
- -
I
-
Unit Size Codes in Figure 21.
.
Idle mode (decimal point / no unit operation)
Cubic feet per minute (cfm) setting for indoor blower (1 second ON, 0.5 second OFF) / cfm setting for current mode
A
displayed. Example: A1200
Cooling stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat
C
codes). Example C1 or C2
d
Dehumidification mode (1 second ON) / 1 second OFF) / cfm setting displayed / Pause / Repeat Codes)
d F
Defrost mode. (Y, W and O call)
Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat
H
codes. Example: H1 or H2 or H3
Variable Capacity Heat (1 second ON, 0.5 second OFF) / % of input rate displayed / Pause/ cfm setting / Pause/ Re­
h
peat codes. Example: h1 or h2
U Discharge air sensor temperature (indoor blower must be operating) U105
CBX32MV
B C
100% CFM
45 SEC.
C
D
100% CFM
45 SEC.
C
100% CFM
Table 10. AHC System Status Codes
f three horizontal bars are displayed, AHC does not recognize air handler model size and capacity. See Configuring
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
OFF
been satisfied) and motor runs at 100% until
demand is satisfied.
C Once demand is met, motor ramps down to stop
C
B
OFF A
1/2 MIN
50% CFM
OFF
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
OFF
second pause between the character groups.
Page 32
Delay Profile 4
7 1/2 MIN 100%
82% CFM CFM
COOLING DEMAND
D E
OFF
1/2 MIN
50% CFM