Software Revs 3,5,6,8,10, 12 Infinity /Evolution Troubleshooting (Rev. 2)
10-12-2006
13
Fan Coil Generated Fault Descriptions
Flash
Code
Fault Description User Interface Display Action
16 System Communication Fault COM_FAULT in fault history
No display on main screen (16 code on fan
coil board)
25 Invalid Model/Motor Selection INVALID MODEL on main screen during
installation
26 Invalid Heater Size INVALID HTR SIZE on main screen during
installation
27 Invalid Outdoor Unit Size INVALID ODU SIZE on main screen during
installation
36 Heater output not sensed
when energized
HTR NOT SENSED in fault history
No display on main screen
37 Heater output sensed On
when not energized
HTR STUCK ON in fault history
SYSTEM MALFUNCTION on main screen
41 Blower Motor Fault BLOWER FAULT in fault history
CRITICAL MALFUNCTION on main screen
44 Motor Communication Fault BLWR COM FAULT in fault history
CRITICAL MALFUNCTION on main screen
46 Brown Out Condition BROWN OUT
See Fan coil
Installation
Instructions for error
descriptions.
Note: User Interface selections override furnace board dipswitch settings
Furnace Generated Fault Descriptions
Code Fault Description User Interface Display Action
12 Blower On After Power Up BLOWER ON AFTER POWER UP in fault
history
No display on main screen
Occurs when call for heat
satisfies during blower on
delay.
13 Limit Circuit Lockout
(Auto reset in 3 hours)
LIMIT CIRCUIT LOCKOUT in fault history
SYSTEM MALFUNCTION on main screen
14 Limit Circuit Lockout
(Auto reset in 3 hours)
IGNITION LOCKOUT in fault history
SYSTEM MALFUNCTION on main screen
15 Limit Circuit Lockout
(Auto reset in 3 hours)
BLOWER MOTOR LOCKOUT in fault
history
CRITICAL MALFUNCTION on main
screen
21 Gas Heating Lockout
(Control will not auto reset)
GAS HEAT LOCKOUT in fault history
SYSTEM MALFUNCTION on main screen
22 Abnormal Flame-Proving
Signal
FLAME SENSE ERROR in fault history
SYSTEM MALFUNCTION on main screen
23 Pressure Switch Did Not
Open
LPS OR HPS CLOSED in fault history
SYSTEM MALFUNCTION on main screen
See Service / Status
Code label in furnace or
Furnace troubleshooting
guide
24 Secondary Voltage Fuse
Open
24VAC FUSE OPEN in fault history
SYSTEM MALFUNCTION on main screen
May see this fault during
quick power interruptions
25 Model Selection Or Setup
Error
MODEL/SETUP ERROR in fault history.
No display on main screen.
31 High-Heat Pressure Switch
Or Relay Did Not Close Or
Reopened
HPS OR RELAY OPEN in fault history.
No display on main screen
See Service / Status
Code label in furnace or
furnace troubleshooting
guide
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