Furnace Fault Codes D802247P01rev08[1].xls
REVISION: 9 CN: 9108T00 DATE: 2009-6-12
Fault LED COM LED User Interface Display Control Display
RECYCLE
Flame is off when flame should be
detected. Furnace tries to relight
itself.
RETRY
Furnace tries to light, but no flame is
detected.
RECYCLE LO
10 recycles within a single call for
heat will cause 1hr lockout.
RETRY LO
3 ignition attempts in a row within a
single call for heat results in 1 hr
lockout.
PS3 OPEN Open Pressure Switch, third stage
PS3 CLOSED Shorted Pressure Switch, third stage
PS2 OPEN Open Pressure Switch, second stage
PS2 CLOSED
Shorted Pressure Switch, second
stage
PS1 OPEN Open Pressure Switch, first stage
AUX LIMIT
Open Reverse Flow - Heat exchanger
temperature too high. Could be
caused by low airflow or fan failure.
5 Flash Device count FLAME ERROR ERR 34
34
Flame Detect Fault
Flame detected, should not be
present
POLARITY ERR N/A
Line Polarity Fault Voltage reverse polarity
GND FAULT N/A 88 Ground Fault
Occurs when proper earth ground is
not detected.
IGNITER ERR Igniter fault
TRIAC ERR Triac fault
Control tried to turn on gas valve, but
24V not sensed.
Control senses 24V present at the gas
valve when it should not be present.
8 Flash Device count LO FLAME SNS N/A
4
Low Flame Signal
Flame current is low, but still strong
enough to allow operation.
9 Flash Device count IND LIMIT ERR 26 26 High Temp Limit Fault
Flue gas temperature too high. Could
be caused by low airflow or fan failure.
SYS COMM CRC
COMM system unrecognized
response
IND COMM CRC Inducer Motor unrecognized response
BLW COMM CRC Blower motor unrecognized response
BLW COMM ERR Blower motor no COMM response ¹
IND COMM ERR Inducer motor no COMM response
SYS COMM ERR Loss of heat/cool demand
NO SYS CLK Loss of clock signal
Device count 24V COMM MSMTCH ERR 139 139
Communication
Failure
Communication Message has been
detected while configured for 24V
Mode
Solid ON Device count CNTRL FAULT ERR 18 18 Control Failure Internal control failure
None Device count TWIN ERROR N/A
19
Twinning Fault
Twinning Not Allowed with Variable
Speed
PM DATA ERR
Data Section is Corrupt but PM is
useable
CAP MISMATCH
Compressor size does not match
capacity in PM
ID MTR ERR
Blower HP/OEM does not match PM
Data
PM MISSING No PM
PM UNIT ERR N/A
Primary Copy of Unit Data File is
Corrupt.
PM MEM ERROR ERR 114
Primary and Secondary copies of Unit
Data File are Corrupt
AC VOLTS LOW Voltage too low
AC VOLTS HI Voltage too high
None Device count CHECK FUSE N/A 92 Fuse 24V Fuse Open
Y1 OFF ERR Y1 Output OFF when it should be ON
Y1 ON ERR Y1 Output ON when it should be OFF
TS 1 SHORT Temperature sensor 1 shorted.
TS 1 OPEN Temperature sensor 1 open.
TS 2 SHORT Temperature sensor 2 shorted.
TS 2 OPEN Temperature sensor 2 open.
Notes:
D342960P01
PRINTED FROM: D802247P01 Rev 9
Communication FaultERR 91
Fast Flash
91
7 Flash
Control senses 24V present at the gas
valve when it should not be present.
EXT GV ERR
None Device count
Device count
None Device count
2 Flash
4 Flash
6 Flash
Device count
3 Flash Device count
Device count
ERR 101
10
90
93ERR 93
ERR 10
Alert Description
22
Alert Group
Shorted Pressure Switch, first stage
Ignition Means Fault
High Temp Limit Fault
20
Alert Notification
Alert
Code
Flame lost or Ignition
failure
N/A
Device count
1
Device count
87
Y1 Relay Failure
N/A
Communication Busy
Fault
Gas Valve Fault
AC Line Fault
Bad or Missing PM
59
N/A
HIGH LIMIT
Solid ON INT GV ERR
ERR 87
ERR 26
10 Flash
Device count
Device count
Temperature Sensor
Failure
N/A
None Device count N/A
119
None 114
ERR 114
101
Open High Limit - Heat exchanger
temperature too high. Could be
caused by low airflow or fan failure.
ROLLOUT OPEN Open flame rollout
Soft lockout due to
flame lost or ignition
retries
Pressure Switch
Failure
Roll Out Fault
ERR 22
N/A
PS1 CLOSED
26
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