Payne Fault Codes

PAYNE
DIAGNOSTIC CODES
DESCRIPTION
LED CODE
RED LED1 ON
Furnace is operating in emergency heat.
RED LED2 ON
The microprocessor has malfunctioned. To reset: Put setup switch "SW-1" in the "ON" position nad jumper
thermostat terminals "R", "W/W1" and "Y/Y2" simultaneously with the door switch pushed in and power to the
unit "ON". Disconnect jumper and place setup switch in the "OFF" position. If LED2 reappears, replace main
control board.
YELLOW LED3 ON
Furnace is operating in high heat.
GREEN LED4 ON
Furnace is operating in low heat.
RED LED2 FLASHING
Line voltage polarity is reversed.
EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST DIGIT DETERMINED BY NUMBER OF FLASHES OF THE
YELLOW LED AND THE SECOND DIGIT DETERMINED BY NUMBER OF FLASHES OF THE GREEN LED.
11 NO FAULT IN RECENT HISTORY DISPLAY- Indicates no faults have occurred within the last five cycles. To
read recent fault history, put setup switch "SW-1" in the "ON" position. To clear recent fault history, put setup
switch "SW-1" in the "ON" position and jumper thermostat terminals "R", "W/W1" and "Y/Y2" simultaneously until
an "11" is flashed.
12 BLOWER CALIBRATION LOCKOUT- Indicates RPM calculated for low heat was less than 250 RPM or greater
than 1300 RPM on two successive attempts. Auto reset after three hours. Reset power and refer to fault #44
section.
13 LIMIT SWITCH LOCKOUT- Indicates the occurrence of 10 successive limit trips during high heat or three
successive limit trips during low heat. Auto reset after three hours. Check for *Improper or misaligned limit and/or
limit shield. *Improper high or low heat gas input adjustment. *Stuck high heat solenoid in gas valve.
14 IGNITION LOCKOUT- Control will auto-reset after three hours. Refer to #34.
21 INVALID MODEL SELECTION- Indicates model plug is missing or incorrect. See wiring diagram for correct
connector jumper location.
22 SETUP ERROR- Indicates setup switch "SW-1" or "SW-6" is positioned improperly. The following combinations
will cause the fault:
*Thermostat call with "SW-1" "ON", or Thermostat call with "SW-6" "ON", or "SW-1" and "SW-6" both "ON"
together.
23 INVALID BLOWER AIRFLOW SELECTION- Indicates improper "A/C" or "CF" switch setting. The 042 and 14
units can deliver 1-1/2 to 3-1/2 tons A/C and 600 to 1400 CFM for continuous fan. The 060 and 20 unit can deliver
2 to 5 tons A/C and 800 to 2000 CFM for continuous fan. If code is flashing, unit will default tp closest allowable
airflow.
24 SECONDARY VOLTAGE FUSE IS OPEN Check for: - Short circuit in secondary voltage (24VAC) wiring.
PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open longer than five minutes, inducer shuts off for
15 minutes before retry. Check for: - Excessive wind
31 - Proper vent sizing -- Defective inducer motor - Low inducer voltage (115VAC) - Defective pressure switch Inadequate combustion air supply - Restricted vent
- Disconnected or obstructed pressure tubing - Low inlet gas pressure (if LGPS used) If it opens during blower ondelay period, blower will come on for the selected blower off-delay
33 LIMIT CIRCUIT FAULT - Indicates a limit, or flame rollout is open. Blower will run for 4 minutes or until open
switch remakes whichever is longer.
If open longer than 3 minutes, code changes to lockout #13. If open less than 3 minutes status code #33
continues to flash until blower shuts of Flame rollout switch requires manual reset. Check for: - Restricted vent Proper vent sizing - Loose blower wheel - Excessive wind - Dirty filter or restricted duct system.
- Defective blower motor or capacitor. - Defective switch or connections. - Inadequate combustion air supply
(Flame Roll-out Switch open).
34 IGNITION PROVING FAILURE - Control will try three more times before lockout #14 occurs. If flame signal
lost during blower on-delay period, blower will come on for the selected blower off-delay. Check for: - Control
ground continuity - Flame sensor must not be grounded - Oxide buildup on flame sensor (clean with fine steel
wool)
- Proper flame sense microamps (.5 microamps D.C. min., 4.0 - 6.0 nominal). - Gas valve defective or gas valve
turned off - Manual valve shut-off - Defective Hot Surface Ignitor - Low inlet gas pressure
- Inadequate flame carryover or rough ignition - Green/Yellow wire MUST be connected to furnace sheet metal
41 BLOWER OUTSIDE VALID SPEED RANGE- Indicates the blower is not operating at the calculated RPM. If this
fault occurs in conjunction with fault #44 check wiring to motor otherwise refer to the trouble-shooting guide.
42 INDUCER OUTSIDE VALID SPEED RANGE- Indicates the inducer is not operating at the calculated RPM. Or it
has not started within 10 seconds after a call for heat. Check wiring to motor otherwise refer to the
troubleshooting guide.
43 PRESSURE SWITCH CALIBRATION FAULT- Indicates the low and high pressure switch "make" points during
high heat purge are not within calibration range. Check for: -Plugged condensate drain Water in vent piping,
possibly sagging pipe -Improper pressure switch wiring or pressure switch tubing connections -Failed or "out of
calibration" pressure switches.
44 BLOWER CALIBRATION FAULT- Indicates the calculated blower speed is below 250 or above 1300 RPM. Unit
will default to low or high heat mode if possible. If this fault occurs in conjunection with fault #41, check wiring to
motor otherwise refer to the trouble shooting guide. If this fault occurs by itself, check for undersized ductwork, or
excessive static caused by a dirty filter, or closed registers.
45 CONTROL CIRCUITRY LOCKOUT -Auto-reset after one hour lockout due to; - Gas valve relay stuck open Flame sense circuit failure - Software check error Reset power to clear lockout. Replace control if status code
repeats.
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