CODE

DESCRIPTION

RECOMMENDED TROUBLESHOOTING OF

NOTE

 

 

 

LOCKOUT CODES

 

30

Internal fault: Flame bias shorted to adjacent pin

Internal Fault.

H

 

 

1.

Reset Module.

 

31

Internal fault: SLO electronics unknown error

H

2.

If fault repeats, replace module.

32 - 46

Internal fault: Safety Key 0 through 14

L

 

 

 

System Errors

 

 

 

47

Flame Rod to ground leakage

 

 

H

48

Static flame (not flickering)

 

 

H

49

24 VAC voltage low/high

1.

Check the Module and display connections.

H

 

 

2.

Check the Module power supply and make sure

 

 

 

 

that both frequency, voltage and VA meet the

 

 

 

 

specifications.

 

50

Modulation fault

Internal sub-system fault.

H

 

 

1.

Review alert messages for possible trends.

 

51

Pump fault

H

2.

Correct possible problems.

52

Motor tachometer fault

H

3.

If fault persists, replace module.

 

 

 

53

AC inputs phase reversed

1.

Check the Module and display connections.

L

 

 

2.

Check the Module power supply and make

 

 

 

 

sure that both frequency and voltage meet the

 

 

 

 

specifications.

 

 

 

3.

On 24 VAC applications, assure that J4-10 and

 

 

 

 

J8-2 are connected together.

 

54

Safety GVT model ID does not match application's

Contact the service professional.

L

 

model ID

 

 

 

55

Application configuration data block CRC errors

Contact the service professional.

L

56 - 57

RESERVED

 

 

 

58

Internal fault: HFS shorted to IAS

Internal Fault.

L

59

Internal Fault: Mux pin shorted

1.

Reset Module.

L

2.

If fault repeats, replace module.

 

Normal Event Status

 

 

 

 

 

60

Internal Fault: HFS shorted to LFS

 

 

L

61

Anti short cycle

Will not be a lockout fault. Hold Only.

H

62

Fan speed not proved

 

 

H

63

LCI OFF

1.

Check wiring and correct any faults.

H

 

 

2.

Check Interlocks connected to the LCI to assure

 

 

 

 

proper function.

 

 

 

3.

Reset and sequence the module; monitor the LCI

 

 

 

 

status.

 

 

 

4.

If code persists, replace the module.

 

64

PII OFF

1.

Check wiring and correct any faults.

H or L

 

 

2.

Check Preignition Interlock switches to assure

 

 

 

 

proper functioning.

 

 

 

3.

Check the valve operation.

 

 

 

4.

Reset and sequence the module; monitor the PII

 

 

 

 

status.

 

 

 

5.

If code persists, replace the module.

 

65

Interrupted Airflow Switch OFF

1.

Check wiring and correct any possible shorts.

H or L

 

 

2.

Check airflow switches to assure proper

 

66

Interrupted Airflow Switch ON

H or L

 

functioning.

 

 

 

 

 

 

3.

Check the fan/blower operation.

 

 

 

4.

Reset and sequence the module; monitor the

 

 

 

 

airflow status.

 

 

 

5.

If code persists, replace the module.

 

62

Page 62
Image 62
A.O. Smith 1700, 3400, 2600, 2000 instruction manual Reserved

3400, 1700, 2000, 2600 specifications

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