START
•Turn OFF Gas Supply
•Disconnect System Control Harness
•Set Thermostat to Call for Heat
Check for Proper Voltage at Control Harness (See Inset A
YES
Plug Harness into SmartValve Control
Wait for Internal Check Delay (SV9501)
SmartValve™ System Troubleshooting Sequence
Note: Before Troubleshooting, Become Familiar
with the Sequence of Operation
| CHECK | ||
| • | Line Voltage Power | |
NO | • | Low Voltage Transformer | |
• | Limit Controller | ||
| |||
| • | Thermostat | |
| • | Wiring | |
|
|
| |
| INSET A | End View |
24Volt |
| of Control |
Thermostat |
| Harness |
|
| Connector |
24 |
| EFT |
Volts |
| Output |
24 Volt | 24 | 24 Volt |
Common | Hot | |
| Volts |
|
INSET B | HSI |
|
|
| |
| Terminals |
|
Igniter Warms UP and Glows Red
Note: Igniter Will Cycle OFF
and Back ON Once During
the 90 Second Ignition Trial
YES
NO
Unplug Pilot Burner Cable.
Measure Voltage at SmartValue
HSI Element Output (See Inset B)
24V Nominal
YES
Replace Igniter/Flame Rod Assembly
Reconnect Pilot Burner Cable
NO
Replace SmartValve Control
Reconnect Pilot Burner Cable
•Turn On Gas Supply
•Pilot Burner Lights
YES
Main Valve Opens and Main Burner Lights
YES
System is Okay
NO
NO
•Check that Pilot Gas is Flowing Wait to Assure Pilot Gas Tubing is Purged.
YES
•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.
YES
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
NO
Replace SmartValve Control
NO | Check Transformer and Line |
| |
| Volt Supply |
NO | Replace SmartValve Control |
|
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