Status Code 32
LOW-HEAT PRESSURE, DRAFT SAFEGUARD, OR AUXILIARY LIMIT (DOWNFLOW ONLY) SWITCH DID NOT CLOSE OR
REOPENED—THIS STATUS CODE CAN OCCUR AS A RESULT OF LOW-HEAT PRESSURE SWITCH LPS NOT MAKING, OR
DRAFT SAFEGUARD SWITCH DSS OPENING, OR AUXILIARY LIMIT SWITCH ALS1, 2 (IF USED) OPENING. REGARDLESS OF
WHICH SWITCH OPENS, 2-STAGE FURNACE CONTROL OPERATES UNDER THE SCENARIOS SHOWN BELOW. KEEP IN
MIND THAT WHENEVER 2-STAGE FURNACE CONTROL SHUTS UNIT DOWN, GAS REMAINS OFF OR SHUTS OFF
IMMEDIATELY AND INDUCER CONTINUES RUNNING FOR 5 SEC.
•
LOW HEAT
1. PREPURGE—If low-heat pressure switch LPS does not make within 30 sec after a call for heat is initiated, 2-stage furnace control changes
inducer motor speed to high-heat speed and starts flashing status code 32. If low-heat pressure switch LPS closes, 2-stage furnace control
changes inducer motor speed back to low-heat speed and stops flashing status code 32. If low-heat pressure switch fails to remain closed
after inducer returns to low-heat speed, 2-stage furnace control flashes status code 32 and continues running inducer at low-heat speed. If
low-heat pressure switch LPS fails to close after inducer is switched to high-heat speed, 2-stage furnace control continues to flash status
code 32 and runs inducer at high-heat speed. If low-heat pressure switch LPS fails to close within 5 minutes, 2-stage furnace control
continues flashing status code 32, shuts unit down, and waits 15 minutes before restarting heating cycle.
2. AFTER IGNITION—If low-heat pressure switch LPS opens after burners ignite, 2-stage furnace control starts flashing status code 32, shuts
unit down, turns blower on or continues to operate blower at low-heat blower speed for a 90-sec blower off delay period, stops flashing
status code 32, and restarts heating cycle.
NOTE:
On furnaces with variable-speed ICM blower motors, blower will turn on and operate at continuous-fan speed if low-heat pressure switch
LPS opens during blower on delay period.
STEP
ACTION
YES
NO
GO TO
1.
Turn power off, remove blower door, and disconnect R thermostat lead. Note
current settings for setup switches SW-1 and SW-2, then set SW-1 to OFF and
SW-2 to ON.
—
—
2
2.
Turn power on and depress door switch. Use a piece of tape to hold switch
closed.
—
—
3
3.
Jumper R and W/W1 thermostat terminals.
—
—
4
4.
Observe operation of inducer motor for 1 minute before proceeding to next step.
—
—
5
5.
Does status code 32 flash?
9
6
—
6.
Does a different status code flash?
7
41
—
7.
Return SW-1 and SW-2 to original desired settings and go to page number indi-
cated in Index for section covering the status code.
—
—
INDEX
8.
Return SW-1 and SW-2 to original desired settings and go to page number indi-
cated in Index for CLEANUP AND START-UP INSTRUCTIONS.
—
—
INDEX
9.
Did inducer motor turn on at all within the first minute after jumpering R and
W/W1?
15
10
—
10.
Do you have 115 vac across PL3-1 and PL3-3?
11
12
—
11.
Replace inducer motor or inducer motor assembly.
—
—
8
12.
Do you have 115 vac across PL2-7 and PL2-8?
13
14
—
13.
You have an open wire or bad terminal on BLACK or WHITE wire from 2-stage
furnace control to inducer motor. Repair it or replace harness.
—
—
8
14.
Replace 2-stage furnace control.
—
—
8
15.
Did inducer motor remain off for the first 30 sec after R and W/W1 were jum-
pered?
16
19
—
16.
Do you have 115 vac across PL3-2 and PL3-3?
11
17
—
17.
Do you have 115 vac across PL2-4 and PL2-8?
18
14
—
18.
You have an open wire or bad terminal on RED wire from 2-stage furnace con-
trol to inducer motor. Repair it or replace harness.
—
—
8
19.
Do you have 24 vac across ORANGE wire on low-heat pressure switch LPS
and C
OM
-24V on 2-stage furnace control?
24
20
—
20.
Do you have 24 vac across connector terminal PL1-6 and C
OM
-24V on 2-stage
furnace control?
21
27
—
21.
Turn power off. Disconnect jumper wire across R and W/W1 thermostat termi-
nals.
—
—
22
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