SV9410/SV9420; SV9510/SV9520; SV9610/SV9620 SMARTVALVE™ SYSTEM CONTROLS
15
69-1058—05
a
The 6+X designation indicates a combination of flash codes: 6 flashes show the control is in soft lockout, followed by X flashes to
indicate the reason for the soft lockout. When the 6+X code is flashed the SmartValve™ will attempt a new ignition sequence after
one hour, if the call for heat is still present. Reset of the thermostat will initiate a new ignition sequence immediately. Applies only
to those units with line voltage polarity sensing.
b
Any combination of 5 abnormal events during a single call for heat will result in soft lockout. An abnormal event is a Flame Sense
Failure During Run, Airflow Proving Circuit Open During Run, or Limit Circuit Open During Run. The flash code will indicate which
was the last abnormal event that put the system into the soft lockout state based on the table above.
c
Applies only to those units with line voltage polarity sensing.
6+2 Flashes
a,b,c
Soft Lockout—Recycle count exceeds 5 on
this call for heat—last failure was Flame
Sense Lost During Run.
1.
Gas supply pressure inconsistent or too low to
operate appliance with other gas appliances
firing.
2.
Appliances and appliance power supply not
progerly earth grounded.
3.
Flame sense rod contaminated, grounded to
appliance chassis, or in incorrect location.
4.
HSI element and flame sense rod wiring in good
condition and properly connected.
6+3 Flashes
a,b,c
Soft Lockout—Recycle count exceeds 5 on
this call for heat—last failure was Air Flow
Proving Circuit Opened During Run.
1.
Inducer and inducer wiring.
2.
Low line voltage power supply.
3.
Airflow proving switch operation, tubing, wiring.
4.
Obstructions or restrictions in appliance air
intake or exhaust flue system that prevent
proper combustion airflow.
5.
Other devices (such as auxiliary limits) in the
airflow proving circuits.
6+4 Flashes
a,b,c
Soft Lockout—Recycle count exceeds 5 on
this call for heat—last failure was Limit
Circuit Opened During Run.
1.
Open high temperature or auxiliary limit switch.
2.
Open manual reset or auto reset burner rollout
switch in the limit circuit.
3.
Limit and rollout switch wiring in good condition
and securely connected.
4.
Circulating air fan wiring and operation.
5.
Obstructions in appliance or duct work that
prevent proper circulation through heat
exchanger.
6+5 Flashes
a,c
Soft Lockout—Flame has gone away after
Error Code 5 (Flame sensed out of
sequence).
1.
Cycle call for heat. Check for flame at main
burner after call for heat ends.
2.
If no flame visible and Flash Code 5 repeats,
replace SmartValve™.
6+6 Flashes
Not used.
—
6+7 Flashes
a,c
Soft Lockout—Valve drive hardware
self-check failure.
1.
Cycle call for heat. If 6+7 Flash Code repeats,
replace SmartValve™.
10
c
Line voltage input polarity reversed at
SmartValve™.
1.
Line voltage power supply correct and properly
connected to ST9160 EFT.
2.
Appliance chassis earth grounded to Green
(Earth Ground) lead of line voltage power supply.
3.
EFT to SmartValve™ wiring correct (see Fig. 7).
Table 10. Troubleshooting Without LED Indicator Assistance.
If
And
Check/Repair
Combustion air
blower does not
energize.
2-Flash code
does not
come on 30
seconds after call for heat starts.
1.
Combustion air blower wiring.
2.
Combustion air blower.
Combustion air
blower does not
energize.
2-Flash code
does
come on 30
seconds after call for heat starts.
1.
Airflow proving switch stuck closed.
2.
Airflow proving switch miswired or jumpered.
Combustion air
blower is energized.
3-Flash code
does not
come on
after 30 seconds.
Wait for the prepurge time to expire.
3-Flash code comes
on 30 seconds after
combustion air blower
is energized.
Combustion air blower turns off.
1.
Ignition system control switch must be in the ON
position.
2.
Airflow proving switch stuck in open position.
3.
Airflow proving switch tubing and wiring.
4.
Obstructions or restrictions in appliance air intake
or exhaust flue system that prevent proper
combustion air flow.
Table 9. Troubleshooting with LED Indicator Assistance. (Continued)
LED Status
Indicates
Check/Repair