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DVC-35IP INTERMITTENT PILOT SYSTEM TROUBLESHOOTING SEQUENCE
START
IP SYSTEM TROUBLESHOOTING SEQUENCE
Turn OFF Gas Supply
Disconnect System Control
Harness
Set Thermostat to Call for
Heat
Check for Proper Voltage at
Control Harness (See Inset A -
Voltage Should be 24V
Between Thermostat and 24V
Common, and 24V Between
24V Common and 24V Hot.)
Plug Harness into SmartValve
Control
Wait for Internal Check Delay
(SV9501)
Igniter Warms UP and Glows
Red
Note: Igniter Will Cycle OFF
and Back ON Once During the
90 Second Ignition Trial
Turn On Gas Supply
Pilot Burner Lights
Main Valve Opens and
Main Burner Lights
System is Okay
Check
Line Voltage Power
Low Voltage Transformer
Limit Controller
Thermostat
Wiring
Unplug Pilot Burner Cable.
Measure Voltage at SmartValue HSI
Element Output (See Inset B) 24V
Nominal
Replace Igniter/Flame Rod
Assembly
Reconnect Pilot Burner Cable
Check that Pilot Gas is Flowing
Wait to Assure Pilot Gas Tubing is
Purged.
Measure Voltage Between 24V Hot
and 24V Common Leads to
SmartValve Control. Must Measure
at Least 19.5 VAC with Igniter
Powered. See Inset A to Identify
Proper Lead. This Check Must be
Done with the SmartValve Control
Connected and Igniter Powered.
Replace Igniter/Flame Rod
Assembly
Check that Pilot Flame Makes
Good Contact with Pilot Burner
Flame Rod
Check for Good Electrical
Connection Through the Pilot
Tubing
If Both of the Above are Good,
Replace Igniter/Flame Rod
Cycle Thermostat OFF and Back
ON
Main Burner Lights
YES
NO
NO
NO
NO
YES
YES
YES
Replace SmartValve Control
Reconnect Pilot Burner Cable
NO
Replace SmartValve Control
NO
Check Transformer and Line Volt
Supply
NO
Replace SmartValve Control
NO
SmartValve
System Troubleshooting Sequence
Note: Before Troubleshooting, Become Familiar
with the Sequence of Operation
TM
INSET A
24 Volt
Thermostat
24
Volts
24 Volt
Common
24
Volts
24 Volt
Hot
EFT
Output
End View
of Control
Harness
Connector
INSET B
HSI
Terminals
