SV9410/SV9420; SV9510/SV9520; SV9610/SV9620 SMARTVALVE™ SYSTEM CONTROLS
© 2020 Resideo Technologies, Inc. All rights reserved.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
www.resideo.com
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
69-1058—05 M.S. Rev. 05-20 | Printed in United States
Prepurge time has
expired.
HSI element
does not
glow red
within 10 to 15 seconds.
1.
Broken or damaged HSI element.
2.
Broken or damaged HSI element leadwires.
3.
SV9410/SV9420; SV9510/SV9520;
SV9610/SV9620 failure to power HSI element.
HSI element is
glowing red.
No other visible control system
action.
Wait for HSI element warmup time to expire.
HSI element warmup
time has expired and
main valve has been
energized.
Main burner
does not
light within
trial for ignition period.
1.
Combustion air blower moving main burner gas
away from HSI element.
2.
Inlet gas pressure too low for main burner igni-
tion.
3.
Input line voltage too low to heat HSI element.
4.
HSI element incorrectly positioned.
5.
Clogged or incorrect main burner orifice.
Main burner lights
within trial for ignition
period.
Main valve is de-energized at the
end of the trial for ignition period.
If main flame is not sensed during
trial for ignition, system will shut off
HSI element and main gas flow, then
go through a between-trial purge
period and initiate another ignition
trial. A total of four ignition trials will
be attempted before the system
goes to lockout.
1.
Line voltage to L1 terminal of ST9160 or Terminal
Board must be 120 volts with reference to
appliance chassis.
2.
Appliance must be reliably connected to earth
ground.
3.
Combustion air blower moving main burner flame
away from flame sense rod.
4.
Inlet gas pressure too low for proper flame
sensing.
5.
Flame sense rod contaminated or in incorrect
location.
6.
Wiring between SV9410/SV9420; SV9510/
SV9520; SV9610/SV9620 and flame sense rod
must be in good condition and properly con-
nected.
Main burner stays on
after the end of the
trial for ignition
period.
Circulating air fan is not turned on
after appropriate time delay
(Systems with ST9160 Electronic
Fan Timer only).
1.
Wiring between system control and ST9160 EFT.
2.
Proper operation of ST9160 EFT.
Main burner goes out
before thermostat call
for heat ends.
4-Flash code
comes on
.
1.
Open manual reset or auto reset burner rollout
switch.
2.
Open high temperature or auxiliary limit switch.
3.
Limit and rollout switch wiring in good condition
and securely connected.
Main burner goes out
before thermostat call
for heat ends.
4-Flash code
does not come on
.
1.
Intermittent wiring connection between
SV9410/SV9420; SV9510/SV9520;
SV9610/SV9620 and flame rod.
2.
Combustion air blower moving main flame away
from flame rod.
3.
Airflow proving switch has opened.
4.
Flame sense rod ceramic or leadwire overheated.
5.
Gas flow supply reduced or interrupted.
Table 10. Troubleshooting Without LED Indicator Assistance. (Continued)
If
And
Check/Repair