Lennox G32V Series User Manual

Page 25
TABLE 20
STATUS CODES
STATUS LED COLOR FUNCTION
DS3
ON / OFF ’
GREEN
DS3−ON indicates that the motor has a demand to operate. (This LED must be on in all
modes).
DS6
CFM"
GREEN
DS6−blinking indicates the airflow (CFM) demand in the motor. The air flow is determine by
counting blinks between two (2) second pauses. One blink equals roughly 100 CFM.
DS7
HI / LO"
YELLOW
DS7−ON indicaties the DS to R" jumper has not been cut. When the jumper is cut the system
will be operating with LENNOX HARMONY II (See Harmony Installation Instructions) or with
the CCB1 Efficiency Plus control.
CCB1: When ON, a 24 VAC is being applied and when OFF, it has been removed. This on/off
operation varies the indoor blower’s performance so dehumidification can be enhanced.
DS8
HEAT"
YELLOW DS8−ON indicates the system is in HEAT mode.
TABLE 21
DIAGNOSTIC CODES
Diagnostic LEDs are labeled DS1 and DS2. See figure 16 for location of diagnostic LEDs.
DS1 DS2 DESCRIPTION
SIMULTANEOUS
SLOW FLASH
SIMULTANEOUS
SLOW FLASH
Power on − Normal operation.
Also signaled during cooling and continuous fan.
SIMULTANEOUS
FAST FLASH
SIMULTANEOUS
FAST FLASH
Normal operation − signaled when heating demand initiated at thermostat.
SLOW FLASH ON
Primary, secondary or rollout limit switch open. Limits must close within 3 minutes
or unit goes into 1 hour Watchguard.
OFF SLOW FLASH
Low pressure switch open; (G32V−75 only)
OR: Blocked inlet/exhaust vent;
OR: Low pressure switch closed prior to activation of combustion air inducer.
OFF FAST FLASH
High pressure switch open;
OR: Blocked inlet/exhaust vent;
OR: High pressure switch closed prior to activation of combustion air inducer.
ALTERNATING
SLOW FLASH
ALTERNATING
SLOW FLASH
Watchguard −− burners failed to ignite; OR limit open more than 3 minutes;
OR lost flame sense 5 times in one heating cycle;
OR pressure switch opened 5 times in one heating cycle.
SLOW FLASH OFF Flame sensed without gas valve energized.
ON ON
ON
ON
ON
OFF
Circuit board failure or control wired incorrectly. Check 24 and 115 volts to board.
OFF ON
Circuit
board
failure
or
control
wired
incorrectly.
Check
24
and
115
volts
to
board.
FAST FLASH SLOW FLASH Main power polarity reversed. Switch line and neutral.
SLOW FLASH FAST FLASH Low flame signal. Measures below 0.23 microAmps. Replace flame sense rod.
ALTERNATING
FAST FLASH
ALTERNATING
FAST FLASH
The following conditions are sensed during the ignitor warm−up period only:
1) Improper main ground;
2) Broken ignitor; OR: Open ignitor circuit;
3) Line voltage below 75 volts.
(If voltage lower than 75 volts prior to ignitor warm-up, control will signal waiting on
call from thermostat, and will not respond.
NOTE − Slow flash rate equals 1 Hz (one flash per second). Fast flash rate equals 3 Hz (three flashes per second).
Minimum flame sense current = 0.17−0.22 microAmps.

Lennox G32V Series Specifications

General

Brand	Lennox
Model	G32V Series
Category	Furnace
Language	English