John Wood Power Direct Vent (ENERGY STAR) - Manual (Page 25)

SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Error 7
The self-diagnostic test found
a problem with the gas valve
driver circuit. 1. Cycle power to the water heater “OFF” for 10 seconds and then
back “ON”.
2. If the above step did not clear the error, the control must be
replaced.
Error 8
The self-diagnostic test has
detected a problem with the
internal microcomputer. 1. Cycle the external power “OFF” for 10 seconds and then back
“ON”.
2. If the above step does not clear the error, the control must be
replaced
Error 9
The self-diagnostic test has
detected a problem with the
internal circuit. 1. Cycle the external power “OFF” for 10 seconds and then back
“ON”.
2. If the above step does not clear the error, the control must be
replaced.
Error 10
Flame signal sensed out of
proper sequence. 1. Ensure flame sensor ceramic insulator is not cracked.
2. Turn power off for 10-20 seconds, and then on again to clear the
error code.
3. Replace the control.
Error 11
The high temperature
thermal cutoff is open. 1. Turn the power off for 10-20 seconds then on again to clear the
error code.
2. Replace the control.
Error 12
The self-diagnostic test
has detected one of the
temperature adjust buttons
stuck closed. 1. Make sure that there are no objects leaning against the front of
the control.
2. Lightly press and release each of the buttons once.
3. If the above actions do not clear the error, the control will continue
to regulate water temperature at the last setting, but you will not
be able to change settings unless you replace the control.
Error 13
The self-diagnostic test
has detected that the water
temperature sensor is either
open or short circuited. 1. Turn the power off for 10-20 seconds then on again to clear this
error code.
2. If no wiring problems are found the control must be replaced.
Table 5. Intelli-Vent TM System Error Codes.
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