Install Instructions

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IGNITION STATE AND TIMING
IGNITION STATE TIMING
Pre-purge
5 seconds (NG models)
15 seconds (LP models)
Hot Surface Igniter
(HSI) Warmup
10 seconds
Ignition Activation
Period (IAP)
3.5 seconds maximum
Flame Recognition
Period (FRP)
0.5 second
Trial For Ignition IAP + FRP
Flame Stabilization
Period
Not Applicable
Inter-purge 30 seconds
Flame Failure
Response Time
2 seconds max
(@ 1uA fl ame current)
Post-purge 30 seconds
Pressure Switch (PS)
Prove Period
2 minutes
Pressure Switch (PS)
Fault Delay (failed
open/closed)
2 minutes
Soft Lockout 20 minutes
Thermal Cut Out
(TCO) Limit Lockout
Indefi nite (see “TCO Resttable
Lockout”)
Flammable Vapor
(FV) Sensor Lockout
Indefi nite (see “Resetting The
Heater Control”)
SYSTEM STATUS AND ERROR CODES
The micro-controller inside the gas control monitors the
fl ammable vapor 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. The table below lists the
System Status Codes for the Honeywell control. Refer to
it and to the “Trouble Shooting Guidelines” to diagnose
the problem before attempting corrective action. See
also “Flammable Vapor Sensor” and “TCO Resettable
Lockout”.
LED Flash Sequence Control Status
Short fl ash
once every four
seconds
IDLE (no call for heat,
no fault conditions)
“Heartbeat”,
alternates bright/dim
Call For Heat
(no fault conditions)
One Flash,
three second pause
Low Flame Signal
(control continues to operate)
Two Flash,
three second pause
Pressure Switch Failed
Closed
Three Flash,
three second pause
Pressure Switch Failed Open
Four Flash,
three second pause
Thermal Cut Out (TCO) Limit
Lockout
Five Flash,
three second pause
Flame Out Of Sequence
Six-One Flash,
three second pause
Soft Lockout
- Retry Limit
- Failed Trial For Ignition
Six-Two Flash,
three second pause
Soft Lockout
- Recycle Limit
- Pressure Switch/ High Limit
opened
Six-Three Flash,
three second pause
Soft Lockout
- Recycle Limit
- Flame Lost
Six-Four Flash, three
second pause
Soft Lockout
- Flame out of Sequence
Sensed
Seven Flash,
three second pause
Flammable Vapor Sensor
(FVS) Lockout
Eight-One Flash,
three second pause
Flammable Vapor Sensor
FVS Fault Detected
Eight-Two Flash,
three second pause
Temperature Sensor Fault
Detected
Eight-Three Flash,
three second pause
Electronics Fault Detected
Eight-Four Flash,
three second pause
Valve Fault Detected
Hardware Fault
Lockout
Indefi nite