Diagnostic Codes
In this section, the table details what the diagnostic codes on the Setback Control mean. The diagnostic codes that can be displayed are different and depend on the gas valve / control that is connected to the Setback Control.
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| Gas Valve / Control Model |
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| WV8840 | WV4460E | |
Diagnostic | Description | S9360B | S9380B | Accessory | (standing | (intermittent | |
Code # |
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| Module | pilot gas | pilot gas | |
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| control) | control) | |
Conn | Setback Control not connected to gas valve / control or | x | x | x | x | x | |
improperly wired together. | |||||||
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2 | Pressure switch failed to open (stuck closed). | x | x |
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| x | |
4 | Weak pilot signal detected. | x | x |
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| x | |
6 | Pilot signal detected out of sequence. | x | x |
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| x | |
18 | Internal gas valve fault detected. | x | x | x | x |
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20 | Failed to light pilot. |
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| x | |
23 | Pilot signal detected out of sequence (before it should). | x | x |
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| x | |
24 | Pilot signal detected out of sequence (after it should). | x | x |
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| x | |
29 | Pressure switch failed to close (stuck open). | x | x |
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| x | |
31 | Upper tank sensor out of specification. | x | x |
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32 | Lower tank sensor out of specification. | x | x |
| x | x | |
55 | Damper failed to close (stuck open). | x | x |
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56 | Damper failed to open (stuck closed). | x | x |
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57 | False ground in pilot assembly detected. Replace pilot | x | x |
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assembly. |
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58 | Internal gas valve fault detected. | x | x |
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59 | Line voltage out of acceptable range. | x | x |
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60 | Wiring issue, transformer out of phase. | x | x |
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61 | Internal gas valve fault detected. | x | x |
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62 | Ignition failed, maximum number of tries. Soft lockout. | x | x |
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63 | Ignition successful, but flame lost during run cycle. Soft lockout. | x | x |
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| x | |
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64 | Internal gas valve fault detected. | x | x |
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| x | |
65 | Excessive tank temperature. | x | x |
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85 | Soft Lockout due to maximum number of recycles exceeded, |
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| x | |
last recycle was from pressure switch open |
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87 | A manual reset is required due to Rollout Limit |
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| x | |
89 | Equipment missing or improperly wired together. |
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| x |
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93 | Internal gas valve fault detected. |
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| x | x | |
95 | Flammable vapor sensor fault detected, see warning label. |
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| x | |
96 | Flammable vapor sensor out of specification, possible short. |
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| x | |
143 | Water heater tank leak detected. |
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| x |
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145 | Leak sensor improperly installed or leak sensor resistor missing. |
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| x |
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