TROUBLESHOOTING

To support the recommended Troubleshooting, the R7910 has an Alert File. Review the Alert history for possible trends that may have been occurring prior to the actual Lockout.

Note Column: H= Hold message; L=Lockout message; H or L= either Hold or Lockout depending on Parameter Configuration.

Table 24.  TROUBLESHOOTING CODES

CODE

DESCRIPTION

RECOMMENDED TROUBLESHOOTING OF

NOTE

 

 

 

LOCKOUT CODES

 

 

Safety Data Faults

 

 

 

1

Unconfigured safety data

1. New Device, complete device configuration and

L

 

 

 

safety verification.

 

 

 

2. If fault repeats, replace module.

 

2

Waiting for safety data verification

1. Device in Configuration mode and safety

L

 

 

 

parameters need verification and a device needs

 

 

 

 

reset to complete verification.

 

 

 

2. Configuration ended without verification, re enter

 

 

 

 

configuration, verify safety parameters and reset

 

 

 

 

device to complete verification.

 

 

 

3.

If fault repeats, replace module.

 

 

Internal Operation Errors

 

 

 

3

Internal fault: Hardware fault

Internal Fault.

H

 

 

1.

Reset Module.

 

4

Internal fault: Safety Relay key feedback error

H

2.

If fault repeats, replace module.

5

Internal fault: Unstable power (DCDC) output

H

 

 

6

Internal fault: Invalid processor clock

 

 

H

7

Internal fault: Safety relay drive error

 

 

H

8

Internal fault: Zero crossing not detected

 

 

H

9

Internal fault: Flame bias out of range

 

 

H

10

Internal fault: Invalid Burner control state

 

 

L

11

Internal fault: Invalid Burner control state flag

 

 

L

12

Internal fault: Safety relay drive cap short

 

 

H

 

 

 

 

 

13

Internal fault: PII shorted to ILK

 

 

H or L

14

Internal fault: HFS shorted to LCI

 

 

H or L

15

Internal fault: Safety relay test failed due to

 

 

L

 

feedback ON

 

 

 

16

Internal fault: Safety relay test failed due to safety

 

 

L

 

relay OFF

 

 

 

17

Internal fault: Safety relay test failed due to safety

 

 

L

 

relay not OFF

 

 

 

18

Internal fault: Safety relay test failed due to

 

 

L

 

feedback not ON

 

 

 

19

Internal fault: Safety RAM write

 

 

L

20

Internal fault: Flame ripple and overflow

 

 

H

21

Internal fault: Flame number of sample mismatch

 

 

H

22

Internal fault: Flame bias out of range

 

 

H

23

Internal fault: Bias changed since heating cycle

 

 

H

 

starts

 

 

 

24

Internal fault: Spark voltage stuck low or high

 

 

H

25

Internal fault: Spark voltage changed too much

 

 

H

 

during flame sensing time

 

 

 

26

Internal fault: Static flame ripple

 

 

H

27

Internal fault: Flame rod shorted to ground

 

 

H

 

detected

 

 

 

28

Internal fault: A/D linearity test fails

 

 

H

29

Internal fault: Flame bias cannot be set in range

 

 

H

61

Page 60 Page 62
Page 61
Image 61
A.O. Smith 2600, 3400, 1700, 2000 instruction manual Code Description Recommended Troubleshooting Lockout Codes
Page 60 Page 62

3400, 1700, 2000, 2600 specifications

A.O. Smith, a leader in water heating solutions, has developed a range of high-efficiency water heaters that cater to various residential and commercial needs. Among their stellar offerings are the A.O. Smith 2600, 2000, 1700, and 3400 models, each boasting impressive features, cutting-edge technologies, and excellent energy efficiency.

The A.O. Smith 2600 model is designed for those who require a robust water heating solution with a capacity to handle high-demand scenarios. It utilizes a highly efficient heating element that provides rapid heating and maintains a steady output. The built-in smart control system allows users to monitor temperature settings and track energy consumption, ensuring optimal performance.

Next in line, the A.O. Smith 2000 is perfect for households that require a reliable and efficient water heater without compromising on space. This compact model integrates advanced thermal insulation that minimizes heat loss, coupled with a powerful heating element that ensures quick heating times. Its sleek design makes it suitable for various installations while maintaining aesthetic appeal.

The A.O. Smith 1700 model caters specifically to smaller residential needs but retains features that align with higher-end models. It incorporates state-of-the-art safety features, including overheat protection and a pressure relief valve. Its lightweight structure and ease of installation stand out, making it a recommended choice for those looking for efficient heating without extensive modifications to their plumbing systems.

Lastly, the A.O. Smith 3400 is a powerhouse designed for larger commercial applications. This model offers exceptional heating capacities and includes advanced technologies such as a digital display for easy monitoring and control. The robust build is complemented by a high-performance insulation system that significantly reduces energy consumption and operating costs.

All A.O. Smith water heaters, including the 2600, 2000, 1700, and 3400 models, feature corrosion-resistant materials ensuring longevity and durability. With their commitment to quality and innovation, A.O. Smith continues to provide water heating solutions that meet modern demands while emphasizing energy efficiency and user convenience. Whether for residential or commercial use, each model represents the pinnacle of reliability and performance in water heating technology.

In conclusion, A.O. Smith has established itself as a reliable choice for water heaters, with models that cater to diverse needs without compromising on efficiency or quality.
Top Page Image Contents