Ignition State And Timing; System Status And Error Codes - Lochinvar POWER VENTED GAS HEATERS Installation And Operating Manual

IGNITION STATE AND TIMING

IGNITION STATE
Pre-purge
Hot Surface Igniter
(HSI) Warmup
Ignition Activation
Period (IAP)
Flame Recognition
Period (FRP)
Trial For Ignition
Flame Stabilization
Period
Inter-purge
Flame Failure
Response Time
Post-purge
Pressure Switch (PS)
Prove Period
Pressure Switch (PS)
Fault Delay (failed
open/closed)
Soft Lockout
Thermal Cut Out
(TCO) Limit Lockout
Flammable Vapor
(FV) Sensor Lockout
TIMING
5 seconds (NG models)
15 seconds (LP models)
10 seconds
3.5 seconds maximum
0.5 second
IAP + FRP
Not Applicable
30 seconds
2 seconds max
(@ 1uA fl ame current)
30 seconds
2 minutes
2 minutes
20 minutes
Indefi nite (see "TCO Resttable
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
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
Hardware Fault
Lockout
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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
Thermal Cut Out (TCO) Limit
Lockout
Flame Out Of Sequence
Soft Lockout
- Retry Limit
- Failed Trial For Ignition
Soft Lockout
- Recycle Limit
- Pressure Switch/ High Limit
opened
Soft Lockout
- Recycle Limit
- Flame Lost
Soft Lockout
- Flame out of Sequence
Sensed
Flammable Vapor Sensor
(FVS) Lockout
Flammable Vapor Sensor
FVS Fault Detected
Temperature Sensor Fault
Detected
Electronics Fault Detected
Valve Fault Detected
Indefi nite
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