S U F S E R V I C E H A N D B O O K
T R O U B L E S H O O T I N G
PRESSURE SWITCH CONTINUITY
STEP 7
PRESSURE SWITCH CONTINUITY TEST
STEP 7: CHECK FOR CONTINUITY BETWEEN PRESSURE SWITCH TERMINALS WITH WIRES REMOVED.
Condition:
•On/Off switch is off.
•All wires are disconnected from all pressure switches.
•Multimeter is set to lowest ohms scale.
IF… | THEN | |
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blocked inlet switch does not show continuity | replace switch. | |
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blocked inlet switch does show continuity | continue. | |
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blower proving switch does show continuity | replace switch. | |
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blower proving switch does not show continuity | continue. | |
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| check for minimum supply gas | |
| pressure of | |
low gas pressure switch does not show continuity | 5.0” W.C. natural gas | |
9.0” W.C. LP gas | ||
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| replace switch if gas pressures | |
| are above these minimums. | |
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low gas pressure switch does show continuity | continue. | |
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blocked outlet pressure switch does not show continuity | replace switch. | |
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blocked outlet pressure switch does show continuity | reconnect all wires to pressure | |
switches; continue to Step 8. | ||
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Technical Training Department | 24 | State Water Heaters |
Ashland City, Tennessee © 2004 |
