SV9560/SV9570 SMARTVALVE® WATER HEATER CONTROL
TROUBLESHOOTING GUIDE
START
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| CHECK FOR PROPER VOLTAGE AT | ||
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| CONTROL HARNESS (SEE INSET A). |
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| VOLTAGE SHOULD BE 120V |
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| BETWEEN 120V COMMON AND |
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| 120V HOT. |
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| TURN ON GAS SUPPLY PLUG | ||
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| HARNESS INTO SmartValve® |
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| CONTROL. INITIATE A REQUEST |
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| FOR HEAT. COMBUSTION BLOWER |
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| SHOULD BE ON AND PREPURGED. |
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NOTE: BEFORE TROUBLESHOOTING BECOME FAMILIAR WITH THE STARTUP AND CHECKOUT PROCEDURE.
CHECK:
•LINE VOLTAGE POWER
•WIRING
WARNING
Line Voltage Hazard.
Can cause property damage, severe injury or death.
Only a trained, experienced service technician should perform this trouble- shooting. Be certain to avoid contact with pressure switch and/or electrical connections.
CHECK:
•IS AIR PROOFING SWITCH STUCK OR CLOSED.
•IS THE FLUE BLOCKED.
•IS THE WIRING CONNECTED PROPERLY TO THE SWITCH AND COMBUSTION BLOWER.
IGNITER WARMS UP AND GLOWS RED.
NO
WITH IGNITER CABLE CONNECTED, MEASURE VOLTAGE AT HSI ELEMENT OUTPUT (SEE INSET B) 120V NOMINAL CHECK DAMAGED OR BROKEN HSI ELEMENT.
WARNING |
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Line Voltage Hazard. |
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Can cause property damage, | NO | ||||
severe injury or death. |
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Only a trained, experienced service |
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technician should perform this trouble- |
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shooting. Be certain to avoid contact |
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with pressure switch and/or electrical |
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connections. |
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REPLACE HSI
REPLACE SmartValve® CONTROL
MAIN VALVE OPENS AND MAIN BURNER LIGHTS.
SYSTEM IS OKAY.
NO
CHECK:
•IS THE APPLIANCE EARTH GROUNDED (120V BETWEEN HOT AND CHASSIS GROUND).
•IS GAS SUPPLY OFF OR TOO LOW PRESSURE TO OPERATE THE CONTROL.
•DOES BURNER FLAME MAKE GOOD CONTACT WITH THE FLAME ROD.
•IS FLAME SENSE ROD CONTAMINATED OR IN AN INCORRECT LOCATION.
•IS THERE APPROXIMATELY 100 VAV BETWEEN FLAME ROD AND BURNER PAN WITH 120VAC INPUT TO CONTROL.
•IF ALL OF THE ABOVE ARE GOOD, REPLACE IGNITER AND FLAME ROD ASSEMBLY.
CYCLE THERMOSTAT OFF AND BACK ON
1WHEN MEASURING VOLTAGE AT CONNECTIONS, USE CARE TO ASSURE TERMINALS ARE NOT DAMAGED.
NO
MAIN BURNER LIGHTS |
| REPLACE SmartValve® CONTROL |
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