18-GE14D1-5
13
Installer’s Guide
L. AIR HANDLER FLASH CODES
Fault LED
COMM LED
User Interface
Display
Comfort
Control
Display
Solid ON ‡
N/A
CNTRL FAULT †
ERR 18
18
Control Failure
Internal Control Error
Solid ON ‡
N/A
CHECK FUSE †
N/A +
92
Fuse Failure
24V Fuse Open Error
1 Flash *
N/A
EXT SW OPEN *
ERR 106 *
106
External
Shutdown Fault
External Shutdown Input Open Error
PM MEM ERR
PM Data Corrupt Error
PM MISSING
PM Missing Error
ID MTR ERR
Motor Mismatch Error
PM UNIT ERR
PM Unit Data Error
CAP MISMATCH
Compressor Capacity Mismatch
Error
PM DATA ERR
PM Data Section Error
NO SYS CLK
COMM Bit Master Clock Error
SYS COMM ERR
COMM Heat/Cool Demand Error
Device Count BLW COMM ERR
Serial Motor Communication
Inactive Error ¹
SYS COMM CRC
COMM System Busy Error
BLW COMM CRC
Serial Motor Communication Busy
Error
HT+LK ON ERR
Both Interlock Relay & Heater Relay
Stuck Closed Error
INTLK ON ERR
Interlock Relay Stuck Closed
Error
NTLK OFF ERR
Interlock Relay Stuck Open Error
HT ON ERR
Heater Relay Stuck Closed Error
HT OFF ERR
Heater Relay Stuck Open Error
DAS RNG ERR *
Discharge Air Temperature Range
Error
DAS UL ERR *
Discharge Air Temperature Upper
Limit Error
DAS LL ERR *
Discharge Air Temperature Lower
Limit Error
DAS SHORT *
Discharge Air Sensor Short Error
DAS OPEN *
Discharge Air Sensor Open Error
6 Flash *
N/A
RAS RNG ERR *
N/A
117
Return Air
Temperature
Fault
Return Air Temperature Range Error
RAS SHORT *
Return Air Sensor Short Error
RAS OPEN *
Return Air Sensor Open Error
Y1 ON ERR
Y1 Relay Stuck Closed Error
Y1 OFF ERR
Y1 Relay Stuck Open Error
8 Flash
N/A
TWIN ERROR
N/A
19
Twinning Fault
Air Handler Twinning Error
DEMAND ERR *
Heat/Cool Demand Conflict Error*
HT CFG ERR
Electric Heat Configuration Error
PRINTED FROM D802247P01 REV07
3 Flash
N/A
N/A
Device Count
Fast Flash
Notes:
ERR 118 *
N/A
N/A
4 Flash
5 Flash *
5 Flash *
9 Flash
N/A
7 Flash
123
Demand
Configuration
¹ Comfort Control will switch system to "OFF" until this fault condition clears
Discharge Air
Sensor Fault
52
101
ERR 101
Return Air
Sensor Fault
N/A
N/A
Discharge Air
Temperature
Fault
118
N/A
+ Fuse alert notification level would show on Comfort Control, but when fuse is open the COMM bus has no power
† If Air Handler processor is reset or fuse is open, COMM Alert cannot be reported; if the processor is reset
the User Interface will not be updated
* Alert flash code will not be implemented for initial release
‡ LitePort™ transmissions will be allowed during ON flash codes
N/A
Y1 Relay Fault
110
6 Flash *
Alert Group
N/A
Heater Relay
Fault
104
ERR 104
ERR 114
Communication
Busy Fault
90
N/A
Heater Interlock
Relay Fault
Communication
Inactive Fault
4 Flash
Alert Description
2 Flash
N/A
PM Bad or
Missing Fault
114
Alert Notification
Alert
Code
91
N/A
ERR 91
ERR 105
105
