American Standard Furnace Error Codes

American CDB1 Standard Furnace Error Codes

LED ColorFault LEDAlert CodeDescriptionControl Display
Red90Excessive Communication ErrorsN/A
1 Flash91Loss of Heat/Cool Demand Message (COMM)ERR 91
Loss of Bit Master (Clock Signal)
2 FlashDefrost Fault A
3 Flash68Defrost Fault B and/or CN/A
4 FlashDefrost Fault A and [B and/or C]
5 Flash67Ambient Temperature Sensor Fault (Out of Range - Open or Shorted)ERR 67
6 FlashCoil Temperature Sensor Fault (Out of Range - Open or Shorted)
Low Pressure Cut Out Fault (Open outside of defrost Cycle-Hard lock out, cycle power to reset)ERR 79
7 Flash79Low Pressure Cut Out Fault Heat/Cool Lock out
Low Pressure Cut Out Fault (Open outside of defrost Cycle-Short lock out)Wait n
10 Flash102Y2 without Y1 - Miswire (24 volt mode only)N/A
11 Flash67Liquid Temperature Sensor Fault (Out of Range - Open or Shorted)N/A
12 Flash113Liquid Pressure Sensor Fault (Out of Range - Open or Shorted)ERR 113
13 Flash67External Outdoor TemperatureN/A
Sensor Fault (Out of Range - Shorted)
PM Missing with local copy (Operational)ERR 114
Bad Data in PM with local copy (Operational)N/A
14 Flash114Bad Data in PM no local copy (Not Operational)ERR 114
PM Missing with no local copy (Not Operational)
15 Flash *50Duplicate OD Temperature Sensor *N/A
16 Flash *123Demand Configuration Fault *N/A

American TUY060R9V3W Standard Furnace Error Codes

LED ColorCharge Assist™ (CA) LEDsFlashingDescription
GreenCHARGEDOffCharged or not in CA Mode
OnCharge is Correct
Y1On1 st stage compressor requests
Y2On2nd stage compressor request
Fast FlashInitialization at Power Up ~ 60 seconds
Med FlashOil Return Mode ** (Forced Defrost)
STATUSSlow FlashStandard operation
OffCharge Assist™ mode or no power to control
LitePortOccasional FlashFor transmitting LitePort™ data
AmberCOMFlashingFlash device count when in communication (number of COMM products connected in system); Rapid flashes followed by a pause indicates disrupted communications
OffNo power
OnSolid at power-up
FlashingSee Stabilization Flash Rate
CHARGINGOffNot in CA Mode
ADDOnSystem requires refrigerant charge (Control has 24 volt AC output to Charqe Solenoid)
RedODTFlashingAmbient Temperature is out of range - Ambient Temperature must be above 55°F and below 120°F to enter CA Mode A/ore: ODT LED will flash 1 sec ON/OFF for 30 seconds and the CHARGING LED will flash 5 times per second for 2 seconds, then exit CA.
RECOVEROnNeed to recover refrigerant - Unit locked out for 1 hour or press mode button to exit Charge Assist™
LOWOnLiquid pressure below 90 psig - Liquid pressure must be above 90 psig to enter CA Mode
Note: LOW oressure LED will be on for 30 seconds and the CHARGING LED will flash 5 times per second for 2 seconds, then exit CA.

American AUY060R9V3W Standard Furnace Error Codes

LED Description
2 Flashes —System Lockout (Retries or Recycles exceeded)
3 Flashes —Draft Pressure Error - Possible problems:
a) Venting problem
b) Pressure switch problem
c) Inducer problem
4 Flashes —Open Temperature Limit Switch
5 Flashes —Flame sensed when no flame should be present
6 Flashes —115 volt AC power reversed, ignitor (Triac) fault, poor grounding or system voltage too low
7 Flashes —Gas valve circuit error
8 Flashes —Low flame sense
9 Flashes —Open Inducer Limit switch
10 Flashes —Inducer communication error
Solid —Internal GV error or Low TH voltage
Solid Red w/Solid Green "STATUS" LEDContinuous Reset caused by a blown fuse or internal error.