Troubleshooting Guidelines; Lockouts; Soft Lockout; Hard Lockout - American Water Heater Powerflex Installation And Operating Manual

These guidelines should be utilized by a qualifi ed service
agent.

LOCKOUTS

Soft Lockout

•
Occurs when a system safety device trips to break the
sequence of operation. The control will try to start the
system in a timed basis but will not reinstate operation
until the failure is corrected.

Hard Lockout

•
Occurs when the main controller fails and must be
replaced.

RESETTING THE HEATER CONTROL

•
Soft lockouts as diagnosed by the system error codes
require the gas control to be reset.
•
To reset the control, slide the "ON/OFF" switch to the
"OFF" position. Wait for 10 seconds and move the
switch back to the "ON" position.
•
If the problem that caused the control to lock out has
not been corrected, the control will remain or again go
back into lockout.
50

TROUBLESHOOTING GUIDELINES

www. americanwaterheater .com

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
Energy Cut Off
(ECO) Limit 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
328767-001