System Error Codes; Honeywell Troubleshooting Chart - John Wood POWER VENTED GAS FIRED WATER HEATER Installation And Operating Instructions Manual

System Error Codes

The micro-controller inside the gas control monitors the
fl ammable vapour safety features, the ignition sequence,
temperature settings and overall operation of the heater. If any
of these parameters does not operate properly the controller
will shut down the water heater, diagnose the failure and
fl ash an error code. Table 2 lists the System Status Codes for
the Honeywell control. Refer to Table 2 and to the "Trouble
Shooting Guide" to diagnose the problem before attempting
corrective action. See also "Flammable Vapour Sensor" and
"Resettable Lockout".
Honeywell Troubleshooting Chart - User Control
LED Flash Sequence
Short fl ash
once every four
seconds
"Heartbeat",
alternates bright/dim
One Flash,
three second pause
Two Flash,
three second pause
Three Flash,
three second pause
Four Flash,
three second pause
Five Flash,
three second pause
Six-One Flash,
three second pause
Six-Two Flash,
three second pause
Six-Three Flash,
three second pause
Six-Four Flash, three
second pause
Seven Flash,
three second pause
Eight-One Flash,
three second pause
Eight-Two Flash,
three second pause
Eight-Three Flash,
three second pause
Eight-Four Flash,
three second pause
Table 2
Control Status
IDLE (no call for heat,
no fault conditions)
Call For Heat
(no fault conditions)
Low Flame Signal
(control continues to operate)
Pressure Switch Failed
Closed
Pressure Switch Failed Open
TCO Limit Lockout
Flame Out Of Sequence
Soft Lockout
– Retry Limit
- Failed TFI
Soft Lockout
- Recycle Limit
- PS/Limit opened
Soft Lockout
- Recycle Limit
- Flame Lost
Soft Lockout
- Flame out of Sequence
Sensed
Flammable Vapour Sensor
Lockout
FVS Fault Detected
Temperature Sensor Fault
Detected
Electronics Fault Detected
Valve Fault Detected
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