A.O. Smith 110 Troubleshooting Manual - page 12
Troubleshooting Guide
12|
Page
TM‐RE30 (Optional)
5.3 TROUBLESHOOTING ‐ ERROR CODES
•
All units are self diagnostic for safety and convenience when trouble shooting.
•
If there is a problem with the installation or the unit, it will display a numerical error code on
the Remote Controller (if installed), on the 7‐Seg LED on the computer board (510 (T‐D2)), or
the flashing red LED (110 (T‐KJr2), 310 (T‐K4)) to communicate the source of the problem.
•
Consult the following chart for the cause of each error code.
Table 2 – Error Codes
Error Code
510 (T‐D2)
7‐Seg LED,
remote
Error Code
110 (T‐
KJr2), 310
(T‐K4)
Remote
Error Code
Red LED
110 (T‐KJr2),
310 (T‐K4)
Malfunction Description
031
03
1
Incorrect Dipswitch Settings
101
10
5
Warning for 991 Error Code
111
11
3
Ignition Failure
121
12
3
Flame Loss
311
31
2
Output Thermistor
321
32
2
Inlet Thermistor
331
N/A
N/A
Mixing Thermistor
391
39
2
Air‐fuel Ratio Rod Failure
441
N/A
N/A
Flow Sensor (Easy‐Link System only)
510
51
6
Abnormal Gas Valves
N/A
55
6
Abnormal Solenoid Gas Valve
611
61
4
Abnormal Fan Motor
651
N/A
N/A
Abnormal Flow Adjustment Valve ( Easy‐Link System only)
701
70
1
Computer Board Fault
721
72
6
False Flame Detection
741
74
N/A
Remote Controller Communication Failure
761
N/A
N/A
Communication Failure (Easy‐Link System only)
991
99
5
Abnormal combustion
Error code on
the TK‐RE02
Error code on the
computer board
Red LED
Error code on
the TM‐RE30
Error code on the
computer board
7‐Seg LED
Figure 4 – 310 (T‐K4), 110 (T‐KJr2) Error Code outputs
Figure 5 – 510 (T‐D2) Error Code outputs